阅读说明：本技术 一种提高仔猪免疫力的白术多糖复合型饲料添加剂 (Atractylodes macrocephala polysaccharide compound feed additive for improving immunity of piglets ) 是由 陈文斌 张冰琪 李婉燕 曹楠 于 2021-01-04 设计创作，主要内容包括：本发明公开的一种提高仔猪免疫力的白术多糖复合型饲料添加剂,涉及牲猪养殖中的饲料技术领域；其主要成份包括罗汉果汁浓缩物、土豆汁浓缩物、膳食纤维和白术多糖,其各组分的重量配比为：罗汉果汁浓缩物0.01-3.00；土豆汁浓缩物0.20-4.50；膳食纤维0.01-1.50；白术多糖0.01-0.20。具有补气健脾、适口性和吸收消化性好,有清热解毒消肿等功效,对病原菌及有害微生物有一定的抑制作用,能提高仔猪免疫能力,且可延长产品的保质期等特点,添加到普通的仔猪饲料中,适合饲喂刚断奶至转为育肥阶段前的仔猪。(The invention discloses a bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets, and relates to the technical field of feeds in live pig breeding; the main components of the beverage comprise fructus momordicae juice concentrate, potato juice concentrate, dietary fiber and atractylodes macrocephala polysaccharide, and the weight ratio of the components is as follows: fructus Siraitiae Grosvenorii juice concentrate 0.01-3.00; potato juice concentrate 0.20-4.50; dietary fiber 0.01-1.50; 0.01-0.20 of atractylodes macrocephala polysaccharide. The piglet feed has the characteristics of tonifying qi and spleen, good palatability and absorption digestibility, clearing heat, detoxifying and reducing swelling, inhibiting pathogenic bacteria and harmful microorganisms to a certain extent, improving the immunity of piglets, prolonging the shelf life of the product and the like, is added into common piglet feed, and is suitable for feeding piglets from weaning to fattening.)

1. The white atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets is characterized by mainly comprising fructus momordicae juice concentrate, potato juice concentrate, dietary fiber and white atractylodes rhizome polysaccharide, wherein the weight ratio of each component is as follows:

2. the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets as claimed in claim 1, wherein the momordica grosvenori juice concentrate is prepared by the following method:

the method comprises the following steps of: selecting naturally mature fructus Siraitiae Grosvenorii with yellowish epidermis, cleaning;

extracting juice of fructus momordicae: processing the standby fructus momordicae by a juice extractor, and respectively collecting the fructus momordicae juice and the fructus momordicae residues for standby;

thirdly, fermentation: diluting the prepared fructus Siraitiae Grosvenorii juice with 1-1.5 wt% saline solution 2-4 times, preheating to 40-55 deg.C, introducing into a low-polarity macroporous adsorbent resin column until fructus Siraitiae Grosvenorii juice covers the surface of the low-polarity macroporous adsorbent resin, standing until the liquid has fermentation smell, opening a valve at the bottom of the low-polarity macroporous adsorbent resin column, and collecting the fermented fructus Siraitiae Grosvenorii juice;

fourthly, removing impurities: diluting the collected fermented fructus Siraitiae Grosvenorii juice with 1-2.5% citric acid aqueous solution by 1-2 times, preheating to 40-55 deg.C, filling into cation exchange resin column until the fermented fructus Siraitiae Grosvenorii juice covers the surface of the cation exchange resin, standing for 5-10h, opening valve at the bottom of the cation exchange resin column, and collecting the effluent impurity-removed fermented fructus Siraitiae Grosvenorii juice;

fifthly, concentrating: vacuum concentrating the collected impurity-removed fermented fructus Siraitiae Grosvenorii juice to 25-35 Baume degree to obtain fermented fructus Siraitiae Grosvenorii juice concentrated paste;

sixthly, coating:

firstly, preparing momordica grosvenori shell powder: elutriating the standby fructus momordicae dregs with clear water, separating fructus momordicae fiber filaments and fructus momordicae shells, and then processing the fructus momordicae shells into fructus momordicae shell powder with the particle size of more than 40 meshes for standby:

② preparing coating juice: decocting fresh Aloe juice at 70-90 deg.C for 1-3 hr to obtain Aloe coating juice;

③ coating: putting the prepared fermented momordica grosvenori juice concentrated paste and momordica grosvenori shell powder into a stirring container according to the weight ratio of 2-4:0.5, and uniformly stirring to obtain momordica grosvenori mixed paste for later use; slowly adding the aloe coating juice into the surface of the mixed paste under stirring, and uniformly stirring when the weight ratio of the aloe coating juice to the momordica grosvenori mixed paste reaches 1:1 to obtain aloe coating momordica grosvenori concentrated paste for later use;

fourthly, drying: drying the aloe-coated fructus Siraitiae Grosvenorii concentrated extract, and pulverizing into fine powder of more than 80 meshes to obtain fructus Siraitiae Grosvenorii juice concentrate.

3. The compound feed additive for improving immunity of piglets, which is prepared according to the sixteenth substep, is characterized in that the method for processing momordica grosvenori shells into momordica grosvenori shell powder of 40 meshes or more in the sixteenth substep is as follows:

the method comprises the following steps of: washing squeezed fructus Siraitiae Grosvenorii residue with clear water, covering separated fructus Siraitiae Grosvenorii shell with 2-3 times of pure vinegar, soaking at 40-55 deg.C under sealed condition for 1-2 days, taking out, rinsing with water for 1-2 times to obtain acid-leached fructus Siraitiae Grosvenorii shell;

the method comprises the following steps: placing the acid-leached fructus Siraitiae Grosvenorii shell in a normal pressure drying oven heated to 110-125 deg.C for treating for 25-35min to obtain heat-treated acid-leached fructus Siraitiae Grosvenorii shell;

performing cold treatment: placing the heat-treated acid-leached fructus Siraitiae Grosvenorii shell in a refrigerator at 0 deg.C for 20-35min to obtain cold-treated fructus Siraitiae Grosvenorii shell;

fourthly, crushing: processing cold processed fructus Siraitiae Grosvenorii shell into powder of above 40 meshes by pulverizer.

4. The bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets as claimed in claim 1, wherein the potato juice concentrate is prepared by the following method:

the method comprises the following steps of: selecting fresh potatoes, and cleaning for later use;

the method comprises the following steps: cutting the potatoes for later use into filaments, adding the filaments into an inorganic acid solution with the mass fraction of 1.5-2.0%, heating to 80-90 ℃, pouring the hot potatoes into a heat-preservation container, sealing for 1-3 days, filtering, and collecting the pretreated shredded potatoes subjected to acid treatment for later use;

the third step of enzymolysis: cleaning pretreated shredded potatoes with clear water for 2-3 times, adding 2-3 times of mixed alkaline solution with mass fraction of 1-1.5%, stirring, sealing at 20-30 deg.C for 2-4 days, filtering, and collecting enzymolysis potato juice and enzymolysis shredded potatoes respectively;

fourthly, removing impurities: filling the enzymolysis potato juice into a cationic resin column, covering the surface of the resin with the enzymolysis potato juice, standing for 4-6h, opening a valve at the bottom of the cationic resin column, and collecting the outflow impurity-removed enzymolysis potato juice for later use;

fifthly, concentrating: vacuum concentrating the enzyme-hydrolyzed potato juice at 60-70 deg.C to 20-30 Baume degree to obtain concentrated potato juice paste;

sixthly, coating:

firstly, preparing coating juice: cleaning semen Trigonellae, pulverizing into 40 mesh coarse powder, adding into 2-3 times of organic solvent, stirring at room temperature for 5-8 hr, filtering to obtain treated semen Trigonellae powder, adding into 1-1.5 wt% buffer salt solution, stirring at 60-70 deg.C for 1-2 hr, and filtering to obtain buffer treated semen Trigonellae powder; washing the buffered semen Trigonellae powder with 4-10 deg.C cold water for 2-3 times, and pulverizing into 100 mesh or more semen Trigonellae fine powder; adding 0.5-1% mixed enzyme into the fine powder of semen Trigonellae, and treating at 20-38 deg.C for 6-10 hr to obtain enzyme-treated fine powder of semen Trigonellae; washing the enzyme-treated fenugreek fine powder at 60-70 deg.C for 1-2 times, adding deionized water of the same weight, boiling for 2-3 hr, treating the boiled water solution with a juicer, and collecting the squeezed liquid; placing the squeezed juice in a cooking container, and cooking until the water content is less than 8% to obtain semen Trigonellae coating juice for use;

② coating: adding the prepared concentrated potato juice into the cooled fenugreek coating juice, controlling the adding amount to be 2-5g/min, stirring while adding, and uniformly stirring when the weight ratio of the fenugreek coating juice to the potato juice concentrated paste reaches 1:2-4 to obtain the fenugreek coated potato juice concentrated paste for later use;

thirdly, drying: drying the concentrated extract of semen Trigonellae coated potato juice, and pulverizing into fine powder of more than 80 meshes to obtain potato juice concentrate.

5. The bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets as claimed in claim 4, wherein the mixed alkaline solution is composed of potassium hydroxide: calcium hydroxide: the alkaline protease is prepared by mixing alkaline protease at a weight ratio of 0.2:0.2:0.5-1 and dissolving in water.

6. The bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets according to claim 1, wherein the dietary fiber is prepared from momordica grosvenori fiber shreds and enzymolysis potato shreds according to the weight ratio of 1: 0.2-0.8, drying and crushing.

7. The bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets as claimed in claim 1, wherein the bighead atractylodes rhizome polysaccharide is prepared by the following method:

the method comprises the following steps of: selecting mildew-free and insect-free rhizoma Atractylodis Macrocephalae root, cleaning, and cutting into rhizoma Atractylodis slice with thickness less than 0.2 cm;

the method comprises the following steps: soaking the prepared rhizoma Atractylodis Macrocephalae slices in 3-5 times of low-polarity organic solvent at 30-40 deg.C for 8-16h, filtering to remove low-polarity organic solvent, reflux-extracting in 3-5 times of polar organic solvent for 2-4h, filtering to remove polar organic solvent, drying at 60-70 deg.C under normal pressure until water content is less than 10%, and pulverizing into powder of above 60 meshes;

thirdly, extracting: adding flocculating agent with the same weight into the prepared rhizoma atractylodis macrocephalae powder, and stirring uniformly to obtain mixed rhizoma atractylodis macrocephalae powder; adding the mixed bighead atractylodes rhizome powder into deionized water with the weight of 4-7 times of that of the mixed bighead atractylodes rhizome powder, boiling and extracting for 2-4 hours, and filtering to obtain a primary bighead atractylodes rhizome extract; adding polyacrylamide accounting for 2-4% of the volume of the primary extract of the white atractylodes rhizome, stirring for 30-60min, placing in a cold storage at 10 ℃ for 5-10h, and filtering to obtain a primary cold white atractylodes rhizome extract for later use;

fourthly, exchange treatment: adding buffer salt accounting for 1-3% of the volume of the cold rhizoma Atractylodis Macrocephalae primary extract, stirring, heating to 30-40 deg.C, maintaining at constant temperature for 2-3h, filling into cation exchange resin column, standing for 10-30min, opening bottom valve, and collecting the effluent primary exchange liquid; filling the standby primary exchange liquid into a cation exchange resin column, standing for 1-2h, opening a bottom valve, and collecting the outflow secondary exchange liquid for standby; regulating pH of the secondary exchange solution to 3-4 with inorganic acid, stirring, filling into anion exchange resin column, standing for 10-20min, opening bottom valve, and collecting the effluent tertiary exchange solution; diluting the third exchange solution with 30-40 deg.C warm water by 1-2 times, filling into anion exchange resin column, standing for 10-20min, opening bottom valve, and collecting the effluent fourth exchange solution; heating the fourth exchange liquid to 50-60 deg.C, filling into macroporous resin column, and collecting the fifth exchange liquid;

fifthly, concentrating: vacuum concentrating the five-time exchange liquid until the solid content is 30-35% to obtain Atractylodis rhizoma extract exchange concentrated solution;

sixthly, water extraction: mixing the prepared rhizoma Atractylodis Macrocephalae extraction exchange concentrated solution with 1-3 times of silica gel powder of 60-80 meshes, drying, pulverizing into 60-80 meshes, adding into 3-4 times of deionized water, keeping the temperature at 70-80 deg.C for 1-2 hr, and filtering to obtain rhizoma Atractylodis Macrocephalae extraction exchange concentrated water extractive solution;

pruning, drying: and (3) performing vacuum concentration and spray drying on the prepared rhizoma atractylodis macrocephalae extraction exchange concentrated water extract to obtain rhizoma atractylodis macrocephalae polysaccharide.

8. The bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets according to any one of claims 1 to 7, which is characterized by comprising the following main components in parts by weight:

9. the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets according to any one of claims 1 to 7, which is characterized by comprising the following main components in parts by weight:

10. the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets according to any one of claims 1 to 7, which is characterized by comprising the following main components in parts by weight:

Technical Field

The invention relates to the technical field of feeds for raising live pigs, in particular to a bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets.

Background

The breeding of the piglets is the most important stage in the pig raising process, and the weaned piglets face a plurality of stress reactions, such as difficult feeding, easy occurrence of diseases and diarrhea, low immunity, difficult digestion and absorption and the like, so the reasonable adjustment of the nutrients of the piglet feed is particularly important for the breeding of the piglets.

The invention discloses a fermented vegetal weaned piglet feed additive disclosed in Chinese patent application (patent application number 201310323555.5), which is prepared by mixing a component A, a component B and a component C, wherein the component A is prepared by crushing and fermenting moringa leaves, eucommia ulmoides, astragalus mongholicus, codonopsis pilosula, acanthopanax senticosus, honeysuckle, liquorice and dandelion; the component B is prepared by crushing and mixing purslane, hawthorn and pine needle powder; the component C is prepared by mixing oregano extract and aloe polysaccharide. The piglet feed has the function of preventing diarrhea, effectively improves the immunity of piglets, avoids the use of antibiotic products, can completely replace antibiotic drugs, solves the stress problem of weaned piglets, effectively improves the immunologic function of the piglets, reduces the morbidity and mortality, and ensures the gastrointestinal tract health of the weaned piglets, thereby improving the productivity and the breeding benefit of the weaned piglets.

The invention also discloses a piglet feed additive and a preparation and feeding method thereof, which are disclosed in the Chinese patent application (patent application No. 201810041020.1). The piglet feed additive prepared by the invention is an additive with multiple effects, is convenient to use by a certain raw material proportion, is not limited by dosage forms and preparation methods, is not limited by fermentation or not, is convenient to use, has multiple using modes, is not limited by using methods, can promote the absorption and utilization of nutrients in the feed by piglets, improves the utilization rate of the nutrients, reduces the feed cost, can improve the growth performance of weaning piglets, reduces the diarrhea rate, improves the metabolism efficiency of the nutrients, and enhances the antioxidant capacity and the immune function of organisms.

The invention also discloses a piglet feed additive and application thereof in Chinese invention patent application (patent application number is 202010331514.0). The piglet feed additive can enhance the immunity of piglets and promote the growth of bones during the post-lactation period and the weaning period of piglets, and reduce the occurrence of pig leg limping disease in the piglets; according to the invention, Chinese herbal medicine extract and enzyme preparation fermented by bacillus subtilis are added into the feed of piglets, so that the digestion and absorption of piglets and the feed intake of the piglets after weaning are promoted, and the utilization rate of the piglets on the feed is improved; because the piglets grow too fast and have low bone density of bone growth, and about 2 percent of the piglets in a herd have leg-crippling effect on the growth, development and survival rate of the piglets, the feed additive is added into the feed for the piglets, so that the immunity of the piglets can be enhanced, the bone growth of the piglets can be promoted, and the leg-crippling disease of the piglets can be greatly reduced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a feed additive which has the effects of tonifying qi and spleen, good palatability and absorption digestibility, clearing heat, detoxifying and reducing swelling, has a certain inhibition effect on pathogenic bacteria and harmful microorganisms, can improve the immunocompetence of piglets, can prolong the shelf life of products, and is suitable for feeding piglets.

In order to solve the technical problems, the invention adopts the technical scheme that the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets comprises the following main components in parts by weight:

the preparation method comprises the following steps: mixing the above materials.

The fructus momordicae juice concentrate can be directly concentrated from fructus momordicae juice processed by a juice extractor, and can also be prepared by the following method:

the method comprises the following steps of: selecting naturally mature fructus Siraitiae Grosvenorii with yellowish epidermis, cleaning;

extracting juice of fructus momordicae: processing the standby fructus momordicae by a juice extractor, and respectively collecting the fructus momordicae juice and the fructus momordicae residues for standby;

thirdly, fermentation: diluting the prepared fructus Siraitiae Grosvenorii juice with 1-1.5 wt% saline solution for 2-4 times, preheating to 40-55 deg.C, introducing into weak-polarity macroporous adsorbent resin column (model LX-T28) until fructus Siraitiae Grosvenorii juice covers the surface of the weak-polarity macroporous adsorbent resin, standing until the liquid has fermentation smell, opening valve at the bottom of the column, and collecting the obtained fermented fructus Siraitiae Grosvenorii juice;

fourthly, removing impurities: diluting the collected fermented fructus Siraitiae Grosvenorii juice with 1-2.5% citric acid water solution by 1-2 times, preheating to 40-55 deg.C, filling into cation exchange resin column (model LX-T5) until the fermented fructus Siraitiae Grosvenorii juice covers the surface of cation exchange resin, standing for 5-10h, opening valve (controlling flow rate at 5-10L/min) at the bottom of the cation exchange resin column, and collecting the discharged impurity-removed fermented fructus Siraitiae Grosvenorii juice for use;

fifthly, concentrating: vacuum concentrating the collected impurity-removed fermented fructus Siraitiae Grosvenorii juice to 25-35 Baume degree to obtain fermented fructus Siraitiae Grosvenorii juice concentrated paste;

sixthly, coating:

firstly, preparing momordica grosvenori shell powder: elutriating the standby fructus momordicae dregs with clear water, separating out fructus momordicae fiber filaments and fructus momordicae shells, and then processing the fructus momordicae shells into fructus momordicae shell powder of more than 40 meshes for standby:

② preparing coating juice: decocting fresh Aloe juice at 70-90 deg.C for 1-3 hr to obtain Aloe coating juice for use;

③ coating: putting the prepared fermented momordica grosvenori juice concentrated paste and momordica grosvenori shell powder into a stirring container according to the weight ratio of 2-4:0.5, and uniformly stirring to obtain momordica grosvenori mixed paste for later use; slowly adding the aloe coating juice into the surface of the mixed paste under stirring, and uniformly stirring when the weight ratio of the aloe coating juice to the momordica grosvenori mixed paste reaches 1:1 to obtain aloe coating momordica grosvenori concentrated paste for later use;

fourthly, drying: drying (microwave drying, vacuum drying or freeze drying) the obtained concentrated extract, and pulverizing into fine powder of 80 meshes or more to obtain concentrated extract.

The sixteenth step is that the method for processing the momordica grosvenori shells into the momordica grosvenori shell powder with the size of more than 40 meshes in the sixth step is as follows:

the method comprises the following steps of: washing squeezed fructus Siraitiae Grosvenorii residue with clear water, covering separated fructus Siraitiae Grosvenorii shell with 2-3 times of pure vinegar, soaking at 40-55 deg.C under sealed condition for 1-2 days, taking out, rinsing with water for 1-2 times to obtain acid-leached fructus Siraitiae Grosvenorii shell;

the method comprises the following steps: placing the acid-soaked fructus Siraitiae Grosvenorii shell in a normal pressure drying oven heated to 110-125 deg.C for treating for 25-35min (thickness of material is controlled not to exceed 3cm during drying), to obtain heat-treated acid-soaked fructus Siraitiae Grosvenorii shell;

performing cold treatment: placing the heat-treated acid-leached fructus Siraitiae Grosvenorii shell in a refrigerator at 0 deg.C for 20-35min to obtain cold-treated fructus Siraitiae Grosvenorii shell;

fourthly, crushing: processing cold processed fructus Siraitiae Grosvenorii shell into powder of above 40 meshes by pulverizer.

The potato juice concentrate can be prepared by directly concentrating juice extracted from potatoes, or can be prepared by the following method:

the method comprises the following steps of: selecting fresh potatoes, and cleaning for later use;

the method comprises the following steps: cutting potato into shreds, adding 1.5-2.0 wt% inorganic acid (such as hydrochloric acid, sulfuric acid, phosphoric acid, etc.) solution, heating to 80-90 deg.C, pouring into a heat-insulating container, sealing for 1-3 days, filtering, and collecting acid-treated pretreated shredded potato;

the third step of enzymolysis: cleaning pretreated shredded potatoes with clear water for 2-3 times, adding 2-3 times of mixed alkali (formed by mixing potassium hydroxide, calcium hydroxide and alkaline protease according to the weight ratio of 0.2:0.2: 0.5-1) with the mass fraction of 1-1.5%, stirring uniformly, sealing and treating at 20-30 ℃ for 2-4 days, filtering, and collecting enzymatic hydrolysis potato juice and enzymatic hydrolysis shredded potatoes respectively for later use;

fourthly, removing impurities: filling the enzymolysis potato juice into a cation resin column (resin type is T-603), covering the resin surface with the enzymolysis potato juice, standing for 4-6h, opening a valve at the bottom of the cation resin column (controlling flow rate at 2-4L/min), and collecting the outflow impurity-removed enzymolysis potato juice for later use;

fifthly, concentrating: vacuum concentrating the enzyme-hydrolyzed potato juice at 60-70 deg.C to 20-30 Baume degree to obtain concentrated potato juice paste;

sixthly, coating:

firstly, preparing coating juice: cleaning semen Trigonellae, pulverizing into 40 mesh coarse powder, adding into 2-3 times of organic solvent (such as chloroform, acetone, ethanol, etc.), stirring at room temperature for 5-8 hr, filtering to obtain treated semen Trigonellae powder, adding into 1-1.5 wt% buffer salt (composed of potassium phosphate and potassium hydrogen phosphate at a weight ratio of 1: 0.4) solution, stirring at 60-70 deg.C for 1-2 hr, and filtering to obtain buffered semen Trigonellae powder; washing the buffered semen Trigonellae powder with 4-10 deg.C cold water for 2-3 times, and pulverizing into 100 mesh or more semen Trigonellae fine powder; adding 0.5-1% mixed enzyme (composed of three enzyme preparations with types of E0002: E0003: E0033 in a weight ratio of 1:1: 0.2) into the fenugreek fine powder, and treating at 20-38 deg.C for 6-10h to obtain enzyme-treated fenugreek fine powder for use; washing the enzyme-treated fenugreek fine powder at 60-70 deg.C for 1-2 times, adding deionized water of the same weight, boiling for 2-3 hr, treating the boiled water solution with a juicer, and collecting the squeezed liquid; placing the squeezed juice in a cooking container, and cooking until the water content is less than 8% to obtain semen Trigonellae coating juice for use;

② coating: adding the prepared concentrated potato juice into the cooled fenugreek coating juice, controlling the adding amount to be 2-5g/min, stirring while adding, and uniformly stirring when the weight ratio of the fenugreek coating juice to the potato juice concentrated paste reaches 1:2-4 to obtain the fenugreek coated potato juice concentrated paste for later use;

thirdly, drying: drying (microwave drying, vacuum drying or freeze drying) the concentrated extract, and pulverizing into fine powder of 80 meshes to obtain concentrated extract.

The mixed alkaline solution may be potassium hydroxide: calcium hydroxide is added according to the proportion of 1:1, or potassium hydroxide: calcium hydroxide: the alkaline protease is prepared by mixing alkaline protease at a weight ratio of 0.2:0.2:0.5-1 and dissolving in water.

The dietary fiber may be a common dietary fiber such as: the water-soluble fiber or the water-insoluble fiber can also be prepared by mixing the grosvenor momordica fiber shreds and the enzymolysis potato shreds according to the weight ratio of 1: 0.2-0.8, drying and crushing (the fineness is more than 60 meshes).

The atractylodes macrocephalaon polysaccharide is commercially available or prepared according to the prior art, and can also be prepared by the following method:

the method comprises the following steps of: selecting mildew-free and insect-free rhizoma Atractylodis Macrocephalae root, cleaning, and cutting into rhizoma Atractylodis slice with thickness less than 0.2 cm;

the method comprises the following steps: soaking Atractylodis rhizoma slice in 3-5 times of lower organic solvent (such as petroleum ether, ethyl acetate, chloride, propylene glycol, etc.) at 30-40 deg.C for 8-16h, filtering to remove lower organic solvent, reflux extracting in 3-5 times of polar organic solvent (such as methanol, ethanol, acetone, etc.) for 2-4h, filtering to remove polar organic solvent, transferring to oven, drying at 60-70 deg.C under normal pressure until water content is less than 10%, and pulverizing into pretreated Atractylodis rhizoma powder of 60 meshes or more;

thirdly, extracting: adding flocculating agent (which may be polyaluminium chloride or composed of perlite powder and polyaluminium chloride at a weight ratio of 1: 0.3-0.5) in equal weight into the pretreated Atractylodis rhizoma powder, and stirring to obtain mixed Atractylodis rhizoma powder; adding the mixed bighead atractylodes rhizome powder into deionized water with the weight of 4-7 times of that of the mixed bighead atractylodes rhizome powder, boiling and extracting for 2-4 hours, and filtering to obtain a primary bighead atractylodes rhizome extract; adding polyacrylamide accounting for 2-4% of the volume of the primary extract of the white atractylodes rhizome into the primary extract of the white atractylodes rhizome, stirring for 30-60min, then placing the mixture in a cold storage at 10 ℃ for 5-10h, and filtering to obtain a primary extract of the cold white atractylodes rhizome for later use;

fourthly, exchange treatment: adding buffer salt (sodium carbonate or sodium bicarbonate, or sodium carbonate: sodium bicarbonate at a weight ratio of 0.2-0.4: 1) 1-3% of the volume of the cold rhizoma Atractylodis Macrocephalae primary extract, stirring, heating to 30-40 deg.C, maintaining at constant temperature for 2-3h, filling into cation exchange resin column (model LXB-001), standing for 10-30min, opening bottom valve (controlling flow rate to 3-4L/min), and collecting the effluent primary exchange liquid; filling the primary exchange solution into cation exchange resin column (model LSI-010), standing for 1-2 hr, opening bottom valve (controlling flow rate to 1-2L/min), and collecting the effluent secondary exchange solution; regulating pH of the secondary exchange solution with inorganic acid (such as hydrochloric acid, phosphoric acid, etc.) to 3-4, stirring, filling into anion exchange resin column (model number is LX-94), standing for 10-20min, opening bottom valve (controlling flow rate to 4-6L/min), and collecting the effluent tertiary exchange solution; diluting the third exchange solution with 30-40 deg.C warm water by 1-2 times, filling into anion exchange resin column (model D-302), standing for 10-20min, opening bottom valve (controlling flow rate to 3-4L/min), and collecting the fourth exchange solution; heating the four-time exchange liquid to 50-60 deg.C, filling into macroporous resin column (model LX-T81), controlling flow rate at 4-6L/min, and collecting the five-time exchange liquid;

fifthly, concentrating: vacuum concentrating the five-time exchange liquid until the solid content is 30-35% to obtain Atractylodis rhizoma extract exchange concentrated solution;

sixthly, water extraction: mixing the prepared rhizoma Atractylodis Macrocephalae extract exchange concentrated solution with 1-3 times of 60-80 mesh silica gel powder, drying, pulverizing into 60-80 mesh powder, adding into 3-4 times of deionized water, keeping the temperature at 70-80 deg.C for 1-2 hr, and filtering to obtain rhizoma Atractylodis Macrocephalae extract exchange concentrated water extract;

pruning, drying: and (3) performing vacuum concentration and spray drying on the prepared rhizoma atractylodis macrocephalae extraction exchange concentrated water extract to obtain rhizoma atractylodis macrocephalae polysaccharide.

The optimized technical scheme is that the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets comprises the following main components in parts by weight:

the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets in the technical scheme is added into piglet feed and is suitable for feeding the piglets within 10 days after weaning. The bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets, which is used in the stage of breeding, takes the momordica grosvenori juice concentrate as a main component, various organic acids generated in the momordica grosvenori juice concentrate in the fermentation process can promote intestinal digestion of piglets, unsaturated fatty acids contained in momordica grosvenori shells can provide energy for growth of piglets, and a small amount of sweet components can improve the taste of the feed and promote secretion of saliva of piglets to enhance feeding; the aloe juice contains abundant beneficial components, can supplement the nutrition requirement of piglets, and can inhibit pathogenic bacteria and harmful microorganisms, so as to prevent intestinal tract environment diseases of piglets.

The second optimized technical scheme is that the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets comprises the following main components in parts by weight:

the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets in the technical scheme is added into piglet feed and is suitable for feeding the piglets within 10-20 days after weaning. The bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets, which is used in the stage of breeding, takes the potato juice concentrate as the main material, the amino acid salt enriched in the potato juice concentrate can meet the requirement of the growth of the piglets on trace elements and can be directly absorbed, and the protease can promote the decomposition and digestion of protein in the feed in intestinal tracts and accelerate the growth and development of the piglets.

The optimized technical scheme is that the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets comprises the following main components in parts by weight:

the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets in the technical scheme is added into piglet feed and is suitable for feeding piglets which are weaned and bred for 20 days and then become a fattening stage. The bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets, which is used for stage breeding, is mainly added with dietary fibers, and the enriched dietary fibers can promote the peristalsis of gastrointestinal tracts and promote the digestion and absorption of the piglets on feed nutrients.

Meanwhile, an application method of the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets is also provided, and the application method comprises the following steps: adding the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets into a piglet feed according to the weight proportion of 1-3%, and uniformly mixing to obtain the feed for feeding the piglets.

Compared with the prior art of the same type, the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets has the following technical advantages:

the additive is extracted from natural plants, and the momordica grosvenori juice can generate strong sour taste through self-fermentation to generate a large amount of organic acid, so that intestinal digestion of piglets can be promoted.

And multiple amino acid potassium salts or amino acid calcium salts obtained by processing potatoes have a promoting effect on nutrient absorption, digestion, growth and the like of piglets.

And the natural unsaturated fatty acid and the trace sweet components contained in the fructus momordicae shells can reduce the energy level of protein and play an auxiliary role in improving the taste of the feed (namely, improving the palatability).

The white atractylodes rhizome polysaccharide has the effects of tonifying qi and spleen, eliminating dampness and promoting diuresis, and the like, can enhance digestion and absorption of piglets, strengthen the disease resistance of piglet organisms and improve the immunity of the piglets.

Fifthly, after coating treatment, the shelf life of the organic acid, the amino acid salt and the like can be prolonged (namely, the shelf life of the product is prolonged), and meanwhile, the coating material aloe can supplement the nutritional requirements of the piglets and can inhibit pathogenic bacteria and harmful microorganisms to be beneficial to the intestinal environment of the piglets.

The following table 1 shows control test data (additive amount is 2% for each) of the piglets fed with the inventive white atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets for 30 days, and the piglets fed with the commercial ordinary piglets feed additive (hereinafter referred to as "control group"):

table 1: control test data table for feeding for 30 days

The basal piglet feed added according to the group is the same, the physiological state of piglets is basically the same, and the feeding mode is basically the same; 2. the additives used in the test groups were used in the following examples 1-3 on the first ten days, the second ten days and the third ten days, respectively, and the additives used in the control group were originally distinguished without time period

As can be seen from the data in the table 1, compared with the piglet feed fed with the common additive, the piglet feed fed with the white atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets has the total weight difference of 104kg and the average weight gain of each piglet is 5.2 kg.

Detailed Description

The present invention will be further described with reference to the following examples. The following description is given by way of example, and the scope of the invention should not be limited thereto.

Example 1:

the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets comprises the following main components of momordica grosvenori juice concentrate, potato juice concentrate, dietary fiber and bighead atractylodes rhizome polysaccharide, and is prepared by the following steps:

firstly, preparing raw materials:

(1) and preparing the momordica grosvenori juice concentrate:

the method comprises the following steps of: selecting naturally mature fructus Siraitiae Grosvenorii with yellowish epidermis, cleaning;

extracting juice of fructus momordicae: processing the standby fructus momordicae by a juice extractor, and respectively collecting the fructus momordicae juice and the fructus momordicae residues for standby;

thirdly, fermentation: diluting the spare fructus momordicae juice by 3 times with 1.2 mass percent of salt solution, then preheating to 48 ℃, then pouring into a low-polarity macroporous adsorption resin column (model LX-T28) until the fructus momordicae juice covers the surface of the low-polarity macroporous adsorption resin, then standing until the liquid has fermentation smell, then opening a valve at the bottom of the low-polarity macroporous adsorption resin column, and collecting the flowing fermented fructus momordicae juice for later use;

(by this step, most of the sweet components in the Lo Han Guo juice can be removed, only a small portion of the sweet components can be retained, and various organic acids such as lactic acid and the like can be generated during the fermentation process).

Fourthly, removing impurities: diluting the collected fermented fructus Siraitiae Grosvenorii juice with 1.8% citric acid water solution by 1.5 times, preheating to 48 deg.C, introducing into cation exchange resin column (model LX-T5) until the fermented fructus Siraitiae Grosvenorii juice covers the surface of the cation exchange resin, standing for 8h, opening valve at the bottom of the cation exchange resin column, controlling flow rate at 8L/min (generally 5-10L/min), and collecting the discharged impurity-removed fermented fructus Siraitiae Grosvenorii juice for use;

(by this step, the agricultural residues in the juice of Momordica grosvenori Swingle and the abnormal substances produced by the fermentation, such as harmful bacteria and aldehyde inner oxides, etc.) can be removed.

Fifthly, concentrating: vacuum concentrating the collected impurity-removed fermented fructus Siraitiae Grosvenorii juice to 30 Baume degree to obtain fermented fructus Siraitiae Grosvenorii juice concentrated paste;

(by this step, volatile substances such as ethanol generated during fermentation can be removed).

Sixthly, coating:

firstly, preparing momordica grosvenori shell powder: elutriating the reserved momordica grosvenori residues with clear water, separating momordica grosvenori fiber filaments and momordica grosvenori shells, and processing the momordica grosvenori shells into 80-mesh momordica grosvenori shell powder for later use:

wherein: the method for processing the momordica grosvenori shells into the momordica grosvenori shell powder with the granularity of 80 meshes comprises the following steps:

a. acid leaching: washing squeezed fructus Siraitiae Grosvenorii residue with clear water, covering separated fructus Siraitiae Grosvenorii shell with 2.5 times of pure vinegar, soaking at 48 deg.C under sealed condition for 2 days, taking out, washing with water for 2 times to obtain acid-soaked fructus Siraitiae Grosvenorii shell;

b. and (3) heat treatment: placing the prepared acid-leached fructus Siraitiae Grosvenorii shell in a normal pressure drying oven heated to 120 deg.C for 30min (thickness of material is controlled not to exceed 3cm during drying), to obtain heat-treated acid-leached fructus Siraitiae Grosvenorii shell;

c. and (3) cold treatment: placing the heat-treated acid-soaked fructus Siraitiae Grosvenorii shell in a refrigerator at 0 deg.C for 28min to obtain cold-treated fructus Siraitiae Grosvenorii shell;

d. crushing: processing cold processed fructus Siraitiae Grosvenorii shell into 80 mesh fructus Siraitiae Grosvenorii shell powder by pulverizer.

The above fructus Siraitiae Grosvenorii shell treatment can expand the mesh structure of the shell by soaking with edible vinegar and performing cold and hot treatment, and the components will not be lost.

② preparing coating juice: decocting fresh Aloe juice at 80 deg.C for 2 hr to obtain Aloe coating juice;

③ coating: putting the prepared fermented momordica grosvenori juice concentrated paste and momordica grosvenori shell powder into a stirring container according to the weight ratio of 3:0.5, and uniformly stirring to obtain momordica grosvenori mixed paste for later use; slowly adding the aloe coating juice into the surface of the mixed paste under stirring, and uniformly stirring when the weight ratio of the aloe coating juice to the momordica grosvenori mixed paste reaches 1:1 to obtain aloe coating momordica grosvenori concentrated paste for later use;

fourthly, drying: drying (vacuum drying) the obtained concentrated extract, and pulverizing into 80 mesh fine powder to obtain concentrated extract.

The aloe juice used in the concentrate of the momordica grosvenori juice obtained by the method contains rich beneficial components, so that the concentrate of the momordica grosvenori juice can supplement the nutritional requirements of piglets and inhibit pathogenic bacteria and harmful microorganisms, and is beneficial to the intestinal environment of the piglets; the used fructus momordicae shell powder can adsorb concentrated paste by utilizing the micropore characteristic, and substances such as unsaturated fatty acid, linoleic acid, a small amount of sweet components and the like are also contained in the shells, so that the intestinal absorption of piglets can be adjusted, the taste of the feed can be improved (namely, the palatability is improved), and the appetite of the piglets is promoted.

(2) And preparing a potato juice concentrate:

the method comprises the following steps of: selecting fresh potatoes, and cleaning for later use;

the method comprises the following steps: cutting the potatoes for later use into filaments, putting the potatoes into a phosphoric acid solution with the mass fraction of 1.8%, heating the potatoes to 85 ℃, pouring the potatoes into a heat-preservation container while the potatoes are hot, sealing the potatoes for 2 days, filtering the potatoes, and collecting the pretreated potato filaments subjected to acid treatment for later use;

(by this step, the starch in the potato is hydrolyzed with acid).

The third step of enzymolysis: washing pretreated shredded potatoes with clear water for 2 times, adding mixed alkaline (formed by mixing potassium hydroxide, calcium hydroxide and alkaline protease according to the weight ratio of 0.2:0.2: 0.8) solution with the weight of 2.5 times and the mass fraction of 1.2% into the solution, stirring uniformly, sealing and treating for 3 days at 25 ℃, filtering, and respectively collecting enzymatic hydrolysis potato juice and enzymatic hydrolysis shredded potatoes for later use;

(through this step, the shredded potatoes are enzymatically hydrolyzed with alkaline protease, and the resulting amino acids are reacted with potassium hydroxide, calcium hydroxide, etc. to produce potassium amino acid and calcium amino acid salts).

Fourthly, removing impurities: filling the enzymolysis potato juice into a cation resin column (with the resin model of T-603), covering the resin surface with the enzymolysis potato juice, standing for 5h, opening a valve at the bottom of the cation resin column, controlling the flow rate to be 3L/min (generally 2-4L/min), and collecting the outflow impurity-removed enzymolysis potato juice for later use;

(by this step, the residual alkali can be removed by using a resin).

Fifthly, concentrating: vacuum concentrating the enzyme-hydrolyzed potato juice at 65 deg.C to 25 Baume degree to obtain concentrated potato juice paste;

sixthly, coating:

firstly, preparing coating juice: cleaning semen Trigonellae, pulverizing into 40 mesh coarse powder, adding into 2.5 times of ethanol, stirring at room temperature for 7 hr, filtering to obtain treated semen Trigonellae powder (alcohol soluble organic substances can be removed), adding into 1.2 wt% buffer salt solution (composed of potassium phosphate and potassium hydrogen phosphate at a weight ratio of 1: 0.4), stirring at 65 deg.C for 1.5 hr, and filtering to obtain buffered semen Trigonellae powder; washing the buffered fenugreek powder with cold water at 7 ℃ for 3 times, and then crushing the washed fenugreek powder into fine fenugreek powder of 100 meshes for later use; adding 0.8% mixed enzyme (composed of three enzyme preparations with types of E0002: E0003: E0033 in a weight ratio of 1:1: 0.2) into the fenugreek fine powder, and treating at 30 deg.C for 8 hr to obtain enzyme-treated fenugreek fine powder; washing the enzyme-treated semen Trigonellae fine powder at 65 deg.C for 2 times, adding deionized water of the same weight, boiling for 2.5 hr, treating the boiled water solution with a juicer, collecting the squeezed solution, and keeping; placing the squeezed juice in a cooking container, and cooking until the water content is less than 8% to obtain semen Trigonellae coating juice for use;

② coating: adding the prepared concentrated potato juice into the cooled fenugreek coating juice, controlling the adding amount to be 3.5g/min (generally 2-5g/min), stirring while adding, and uniformly stirring when the weight ratio of the fenugreek coating juice to the potato juice concentrated juice reaches 1:3 to obtain the concentrated fenugreek coating potato juice for later use;

thirdly, drying: drying (microwave drying) the concentrated extract, and pulverizing into fine powder of 80 meshes to obtain potato juice concentrate.

The semen Trigonellae of the potato juice concentrate obtained by the method contains abundant lysine, mucus, selenium element, etc., and has effects of supplementing nutrition for piglets, clearing heat, detoxicating, and relieving swelling.

(3) And preparing dietary fiber:

the preparation method comprises the following steps of: washing the residues of fructus Siraitiae Grosvenorii processed by juice extractor with clear water, and separating fructus Siraitiae Grosvenorii fiber filaments for use:

preparing the enzymatic shredded potatoes: carrying out enzymolysis on the shredded potatoes, filtering out enzymolysis potato juice, and collecting the enzymolysis shredded potatoes for later use;

the third step of mixing: mixing the siraitia grosvenorii fiber shreds and the enzymolysis potato shreds according to the weight ratio of 1: 0.6, drying and crushing (the fineness is 80 meshes) to obtain the dietary fiber.

(4) And preparing bighead atractylodes rhizome polysaccharide:

the method comprises the following steps of: selecting mildew-free and insect-free rhizoma Atractylodis Macrocephalae root, cleaning, and cutting into rhizoma Atractylodis slice with thickness less than 0.2 cm;

the method comprises the following steps: soaking the prepared rhizoma Atractylodis Macrocephalae slices in 4 times of low-polarity organic solvent (propylene glycol) at 35 deg.C for 12h, filtering to remove low-polarity organic solvent, reflux-extracting with 4 times of polar organic solvent (ethanol) for 3h, filtering to remove polar organic solvent, transferring to oven, drying at 65 deg.C under normal pressure until water content is less than 10%, and pulverizing into powder of more than 60 meshes;

(in this step, organic substances such as lactones and terpenes are removed by using a low-polarity organic solvent, and organic substances such as flavonoids and glycosides are removed by using a polar organic solvent).

Thirdly, extracting: firstly, adding perlite powder into the standby pretreated bighead atractylodes rhizome powder in equal weight: flocculating agent composed of polyaluminium chloride at a weight ratio of 1:0.4 (the flocculating agent is added for flocculating protein, amino acid and organic substances not completely removed in the primary extract of Atractylodis rhizoma to clarify water solution), stirring to obtain mixed Atractylodis rhizoma powder; adding the mixed bighead atractylodes rhizome powder into deionized water with the weight 5 times of that of the mixed bighead atractylodes rhizome powder, boiling and extracting for 3 hours, and filtering to obtain a primary bighead atractylodes rhizome extract; adding polyacrylamide accounting for 3% of the volume of the primary extract of the white atractylodes rhizome into the primary extract of the white atractylodes rhizome, stirring for 45min (the time is set to ensure enough flocculation time), then placing the mixture in a cold storage at 10 ℃ for 8h, and filtering to obtain a primary cold extract of the white atractylodes rhizome for later use;

fourthly, exchange treatment: firstly, adding buffer salt (composed of sodium carbonate and sodium bicarbonate in a weight ratio of 0.3: 1) accounting for 2% of the volume of the cold rhizoma atractylodis macrocephalae primary extract liquid, stirring uniformly, heating to 35 ℃, keeping the temperature constant for 2.5 hours, then filling into a cation exchange resin column (model LXB-001), standing for 20 minutes, then opening a bottom valve (controlling the flow rate to be 3.5L/min), and collecting the effluent primary exchange liquid for later use; filling the primary exchange solution into cation exchange resin column (model LSI-010), standing for 1.5 hr, opening bottom valve (controlling flow rate to be 1.5L/min), and collecting the effluent secondary exchange solution; regulating pH of the secondary exchange solution to 3.5 with inorganic acid (phosphoric acid), stirring, filling into anion exchange resin column (model LX-94), standing for 15min, opening bottom valve (controlling flow rate to 5L/min), and collecting the effluent tertiary exchange solution; diluting the third exchange solution with 35 deg.C warm water by 1.5 times, filling into anion exchange resin column (model D-302), standing for 15min, opening bottom valve (controlling flow rate to 3.5L/min), and collecting the fourth exchange solution; heating the four-time exchange liquid to 55 ℃, then pouring the heated four-time exchange liquid into a macroporous resin column (model number is LX-T81), controlling the flow rate to be 4.5L/min, and collecting the five-time exchange liquid flowing out for later use;

(in this step, the organic acid in the initial extract of cold Atractylodis rhizoma can be neutralized as much as possible by adding buffer salt; the first column chromatography can remove metal ions such as sodium ions, etc. contained in the initial extract of cold Atractylodis rhizoma; the second column chromatography can remove free acidic ions such as amino acids, etc. contained in the initial extract of cold Atractylodis rhizoma; the third column chromatography can remove free basic ions and remove pigments contained in the initial extract of cold Atractylodis rhizoma; the fourth column chromatography can further remove acidic substances contained in the initial extract of cold Atractylodis rhizoma, especially added hydrochloric acid, etc.; and the fifth column chromatography can further remove organic substances remaining in the initial extract of cold Atractylodis rhizoma).

Fifthly, concentrating: vacuum concentrating the fifth exchange solution to solid content of 32% to obtain rhizoma Atractylodis Macrocephalae extractive exchange concentrated solution;

sixthly, water extraction: mixing the prepared rhizoma Atractylodis Macrocephalae extraction exchange concentrated solution with 2 times of silica gel powder of 70 meshes, drying, pulverizing into powder of 70 meshes, adding into deionized water of 3.5 times of the weight, keeping the temperature at 75 deg.C for 1.5h, and filtering to obtain rhizoma Atractylodis Macrocephalae extraction exchange concentrated water extractive solution;

(in this step, silica gel is added, and the undepleted pigments, flavonoids, organic acids and the like can be further adsorbed by the strong adsorbability of the silica gel, so that the purity of the atractylodes macrocephala polysaccharide in the subsequent atractylodes macrocephala extraction exchange concentrated water extract is improved).

Pruning, drying: and (3) performing vacuum concentration and spray drying on the prepared rhizoma atractylodis macrocephalae extraction exchange concentrated water extract to obtain rhizoma atractylodis macrocephalae polysaccharide.

II, preparing materials:

according to the weight ratio, 2.5 parts of fructus momordicae juice concentrate, 0.35 part of potato juice concentrate, 0.02 part of dietary fiber and 0.02 part of atractylodes macrocephala polysaccharide are respectively taken for standby;

thirdly, mixing:

the components are uniformly mixed to obtain the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets.

When the compound feed additive is applied, the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets and the piglet feed are mixed according to the ratio of 2: 98, to obtain the piglet feed added with the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets.

When the feed is used for feeding, the feed is the same as the common piglet feed.

The piglet feed added with the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets is suitable for feeding the piglets within 10 days after weaning.

Example 2:

the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets comprises the following main components of momordica grosvenori juice concentrate, potato juice concentrate, dietary fiber and bighead atractylodes rhizome polysaccharide, and is prepared by the following steps:

firstly, preparing raw materials: same as in example 1.

II, preparing materials:

according to the weight ratio, 0.2 part of fructus momordicae juice concentrate, 3.0 parts of potato juice concentrate, 0.02 part of dietary fiber and 0.06 part of atractylodes macrocephala polysaccharide are respectively taken for standby;

thirdly, mixing:

the components are uniformly mixed to obtain the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets.

When the compound feed additive is applied, the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets and the piglet feed are mixed according to the ratio of 2: 98, to obtain the piglet feed added with the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets.

When the feed is used for feeding, the feed is the same as the common piglet feed.

The piglet feed added with the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets is suitable for feeding the piglets within 10-20 days after weaning.

Example 3:

the bighead atractylodes rhizome polysaccharide compound feed additive for improving immunity of piglets comprises the following main components of momordica grosvenori juice concentrate, potato juice concentrate, dietary fiber and bighead atractylodes rhizome polysaccharide, and is prepared by the following steps:

firstly, preparing raw materials: same as in example 1.

II, preparing materials:

according to the weight ratio, 0.02 part of fructus momordicae juice concentrate, 0.8 part of potato juice concentrate, 1.2 parts of dietary fiber and 0.15 part of atractylodes macrocephala polysaccharide are respectively taken for standby;

thirdly, mixing:

the components are uniformly mixed to obtain the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets.

When the compound feed additive is applied, the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets and the piglet feed are mixed according to the ratio of 2: 98, to obtain the piglet feed added with the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets.

When the feed is used for feeding, the feed is the same as the common piglet feed.

The piglet feed added with the bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets is suitable for feeding piglets which are fed to a fattening stage after 20 days of weaning.

The bighead atractylodes rhizome polysaccharide compound feed additive for improving the immunity of piglets is added into a common piglet feed and is suitable for feeding the piglets from weaning to fattening.