阅读说明：本技术 基于茶皂素做增溶剂的饲料添加剂组合物 (Feed additive composition based on tea saponin as solubilizer ) 是由 郭华 郑遂 王良 刘宇 盛文文 于 2021-12-01 设计创作，主要内容包括：本发明公开了基于茶皂素做增溶剂的饲料添加剂组合物,属于饲料添加剂技术领域；该饲料添加剂组合物的原料,按重量份计,包括：5-30份改性茶皂素,20-25份甲酸,1-3份乳酸,0.2-0.3份DL-蛋氨酸,0.1-5份中链甘油三酯,0.2-2份牛至油,0.001-0.002份百里香酚,40-50份二氧化硅粉末；制备的基于茶皂素做增溶剂的饲料添加剂组合物,在提高平均增重量和降低疾病发生率的同时,还能够降低饲料添加剂的刺激性和提高抑菌性。(The invention discloses a feed additive composition based on tea saponin as a solubilizer, belonging to the technical field of feed additives; the feed additive composition comprises the following raw materials in parts by weight: 5-30 parts of modified tea saponin, 20-25 parts of formic acid, 1-3 parts of lactic acid, 0.2-0.3 part of DL-methionine, 0.1-5 parts of medium chain triglyceride, 0.2-2 parts of origanum oil, 0.001-0.002 part of thymol and 40-50 parts of silicon dioxide powder; the prepared feed additive composition based on the tea saponin as the solubilizer can improve the average weight gain and reduce the incidence of diseases, and simultaneously can reduce the irritation of the feed additive and improve the antibacterial activity.)

1. The feed additive composition taking tea saponin as a solubilizer is characterized by comprising the following raw materials in parts by weight: 5-30 parts of modified tea saponin, 20-25 parts of formic acid, 1-3 parts of lactic acid, 0.2-0.3 part of DL-methionine, 0.1-5 parts of medium chain triglyceride, 0.2-2 parts of origanum oil, 0.001-0.002 part of thymol and 40-50 parts of silicon dioxide powder.

2. The feed additive composition as claimed in claim 1, wherein the particle size of the silica powder is 3-5 μm.

3. The feed additive composition based on tea saponin as a solubilizing agent according to claim 1, wherein the preparation method of the feed additive composition comprises a first mixing and a second mixing.

4. The feed additive composition based on tea saponin as a solubilizing agent according to claim 3, wherein after the modified tea saponin, formic acid, lactic acid, DL-methionine, medium chain triglyceride, origanum oil and thymol are uniformly mixed in the first mixing, ultrasonic oscillation is carried out, the power of the ultrasonic oscillation is controlled to be 180-200W, the time of the ultrasonic oscillation is 30-40min, and the feed additive obtained after the first mixing is obtained after the ultrasonic oscillation is finished.

5. The feed additive composition as claimed in claim 3, wherein the second mixing step comprises adding silica powder to the feed additive after the first mixing step to obtain a second mixture, and homogenizing the second mixture in a homogenizer at a homogenizing speed of 3000-3200rpm and a homogenizing temperature of 60-70 ℃ to obtain the feed additive composition based on tea saponin as the solubilizing agent.

6. The feed additive composition based on tea saponin as solubilizer as claimed in claim 4, wherein the preparation method of the modified tea saponin comprises pretreatment, primary modification, secondary modification and drying treatment.

7. The feed additive composition based on tea saponin as a solubilizing agent according to claim 6, wherein the pretreatment comprises mixing tea saponin with sodium sulfate according to a ratio of 30-35: 1, uniformly mixing, and then carrying out vacuum freezing treatment, wherein the vacuum degree of the vacuum freezing treatment is controlled to be 0.05-0.07MPa, the temperature is controlled to be-20-15 ℃, the time of the vacuum freezing treatment is 1.5-2h, and the pretreated tea saponin is obtained after the vacuum treatment is finished.

8. The feed additive composition based on tea saponin as a solubilizer, which is characterized in that formic acid, lactic acid, origanum oil and thymol are added into tea saponin for one-time modification and uniformly mixed to obtain a raw material mixture, the raw material mixture is subjected to micro-current treatment while being subjected to ultrasonic oscillation, the ultrasonic oscillation frequency of the ultrasonic oscillation is controlled to be 50-60Hz, the micro-current is controlled to be 7-9uA, the time for the ultrasonic oscillation and the micro-current treatment is 40-50min, and the tea saponin subjected to one-time modification is obtained after the treatment is finished;

the mass ratio of the tea saponin, the formic acid, the lactic acid, the origanum oil and the thymol in the primary modification step is 20-25:3-4:6-8:2-3: 3-5.

9. The feed additive composition based on tea saponin as solubilizer as claimed in claim 6, wherein the second modification comprises adding saccharifying enzyme, neutral cellulase and ligninase to the tea saponin after the first modification, controlling the temperature to 25-30 ℃ and starting stirring, controlling the stirring speed to 100-120rpm, stirring for 1-1.5h, stopping stirring, controlling the temperature to 70-80 ℃, and standing for 1.5-2h at 70-80 ℃ to obtain the tea saponin after the second modification;

the activity of the saccharifying enzyme is 20000-25000U/g; the activity of the neutral cellulase is 4000 and 5000U/g; the activity of the ligninase is 1000-2000U/g;

the mass ratio of the tea saponin, the saccharifying enzyme, the neutral cellulase and the ligninase after the primary modification in the secondary modification step is 200-220:1-2:0.5-1: 2-4.

10. The feed additive composition based on tea saponin as a solubilizer, as claimed in claim 6, wherein the drying treatment comprises placing the twice modified tea saponin in a vacuum freeze dryer for vacuum freeze drying, when performing vacuum freeze drying, firstly vacuumizing to 50-60kPa and starting refrigeration, reducing the temperature of a cold trap of the vacuum freeze dryer to-30 ℃ to-20 ℃ within 1.5-2 hours, then performing low-temperature treatment at-30 ℃ to-20 ℃ for 1-1.5 hours, slowly heating the product by a heating system, controlling the heating rate to 1-2 ℃/min, after increasing the temperature to 40-45 ℃, stopping heating, and performing constant-temperature treatment at 40-45 ℃ for 4-5 hours to obtain the modified tea saponin.

Technical Field

The invention relates to a feed additive composition based on tea saponin as a solubilizer, and belongs to the technical field of feed additives.

Background

The feed additive is a small amount or trace substance added in the production, processing and using processes of feed, and the feed additive is small in dosage but remarkable in effect. The feed additive is a raw material inevitably used in modern feed industry, and has obvious effects on strengthening the nutritive value of basic feed, improving the production performance of animals, ensuring the health of the animals, saving the feed cost, improving the quality of animal products and the like.

As for the composition of the feed additive, formic acid, acetic acid, phosphoric acid, lactic acid, propionic acid and citric acid are preferably selected in the industry at present, and other synergistic components such as medium-chain fatty acid, oregano oil, monoglyceride, tributyl ester and the like are combined, so that although the daily gain of pigs can be obviously improved, the feeding cost is reduced, the antibacterial property is poor, and the skin and mucosa stimulation effect is strong. Although a lot of green feed additives are developed at present, the irritation to skin and mucosa can be relieved to a certain extent, and the antibacterial property is improved, the addition amount of the green feed additives in the feed is large, and the effect of improving the daily gain of pigs is not obvious like the effect of formic acid, acetic acid and the like.

Therefore, the research and development of a feed additive can obviously improve the daily gain of pigs, reduce the feeding cost, relieve the stimulation to skin and mucosa to a certain extent and improve the antibacterial property, and is a problem which needs to be solved at present.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a feed additive composition based on tea saponin as a solubilizer, which realizes the following aims: the feed additive can improve average weight gain and disease incidence, and simultaneously can reduce irritation of the feed additive and improve antibacterial activity.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a feed additive composition based on tea saponin as a solubilizer comprises the following raw materials in parts by weight: 5-30 parts of modified tea saponin, 20-25 parts of formic acid, 1-3 parts of lactic acid, 0.2-0.3 part of DL-methionine, 0.1-5 parts of medium chain triglyceride, 0.2-2 parts of origanum oil, 0.001-0.002 part of thymol and 40-50 parts of silicon dioxide powder.

The particle size of the silicon dioxide powder is 3-5 mu m.

A method for preparing feed additive composition based on tea saponin as solubilizer comprises mixing for the first time and mixing for the second time.

And in the first mixing step, after the modified tea saponin, the formic acid, the lactic acid, the DL-methionine, the medium-chain triglyceride, the origanum oil and the thymol are uniformly mixed, ultrasonic oscillation is carried out, the power of the ultrasonic oscillation is controlled to be 180-200W, the time of the ultrasonic oscillation is 30-40min, and the feed additive after the first mixing step is obtained after the ultrasonic oscillation is finished.

And (3) performing secondary mixing, namely adding silicon dioxide powder into the feed additive subjected to primary mixing to obtain a secondary mixture, then placing the secondary mixture into a homogenizer for homogenization, controlling the homogenization speed of the homogenizer to be 3000-3200rpm, controlling the homogenization temperature to be 60-70 ℃, and obtaining the feed additive composition based on the tea saponin as the solubilizer after the homogenization is finished.

The preparation method of the modified tea saponin comprises pretreatment, primary modification, secondary modification and drying treatment.

The pretreatment comprises the steps of mixing tea saponin with sodium sulfate according to the ratio of 30-35: 1, uniformly mixing, and then carrying out vacuum freezing treatment, wherein the vacuum degree of the vacuum freezing treatment is controlled to be 0.05-0.07MPa, the temperature is controlled to be-20-15 ℃, the time of the vacuum freezing treatment is 1.5-2h, and the pretreated tea saponin is obtained after the vacuum treatment is finished.

The first modification is to add formic acid, lactic acid, origanum oil and thymol into tea saponin, uniformly mix to obtain a raw material mixture, perform micro-current treatment while ultrasonically oscillating the raw material mixture, control the ultrasonic oscillation frequency of the ultrasonic oscillation to be 50-60Hz, control the micro-current to be 7-9uA, and control the time of the ultrasonic oscillation and the micro-current treatment to be 40-50min, and obtain the tea saponin after the first modification after the treatment is finished;

the mass ratio of the tea saponin, the formic acid, the lactic acid, the origanum oil and the thymol in the primary modification step is 20-25:3-4:6-8:2-3: 3-5.

The second modification is to add saccharifying enzyme, neutral cellulase and ligninase into the tea saponin after the first modification, control the temperature to be 25-30 ℃, start stirring, control the stirring speed to be 120rpm, stop stirring after stirring for 1-1.5h, control the temperature to be 70-80 ℃, and stand for 1.5-2h at 70-80 ℃ to obtain the tea saponin after the second modification;

the activity of the saccharifying enzyme is 20000-25000U/g; the activity of the neutral cellulase is 4000 and 5000U/g; the activity of the ligninase is 1000-2000U/g;

the mass ratio of the tea saponin, the saccharifying enzyme, the neutral cellulase and the ligninase after the primary modification in the secondary modification step is 200-220:1-2:0.5-1: 2-4.

And the drying treatment comprises the steps of placing the secondarily modified tea saponin into a vacuum freeze dryer for vacuum freeze drying, firstly vacuumizing to 50-60kPa and starting refrigeration, reducing the temperature of a cold trap of the vacuum freeze dryer to-30 ℃ to-20 ℃ within 1.5-2 hours, then slowly heating the product through a heating system after carrying out low-temperature treatment for 1-1.5 hours at-30 ℃ to-20 ℃, controlling the heating speed to be 1-2 ℃/min, stopping heating when the temperature is raised to 40-45 ℃, and carrying out constant-temperature treatment for 4-5 hours at 40-45 ℃ to obtain the modified tea saponin.

Compared with the prior art, the invention has the beneficial effects that:

(1) the feed additive composition based on the tea saponin as the solubilizer has very good palatability by modifying the tea saponin;

(2) according to the feed additive composition based on the tea saponin as the solubilizer, the microcurrent treatment and the vacuum freeze drying are carried out in the preparation of the modified tea saponin, so that the bacteriostasis rate can be improved, after the feed containing the feed additive composition with the mass fraction of 5% is eaten, the reduction rate of escherichia coli in cow dung is 53.57% -54.38%, and the reduction rate of staphylococcus aureus is 47.91% -49.02%;

(3) according to the feed additive composition based on the tea saponin as the solubilizer, the average weight gain of the dairy cows can be improved and the disease incidence rate can be reduced by carrying out micro-current treatment in the preparation of the modified tea saponin and carrying out ultrasonic oscillation in the preparation of the feed additive stack, and under the condition that the feed containing the feed additive composition with the mass fraction of 5% is continuously eaten for 30 days and the average feed intake is controlled to be 21.4-22.5kg/d, the average weight gain of the dairy cows is 62.7-65.1kg/d, and the disease incidence rate is 0;

(4) the feed additive composition based on the tea saponin as the solubilizer can reduce the stimulation to the esophagus by carrying out micro-current treatment and vacuum freeze drying in the preparation of the modified tea saponin and carrying out ultrasonic oscillation in one-time mixing in the preparation of the feed additive, and has no stimulation to the esophagus after eating the feed containing the feed additive composition with the mass fraction of 5%.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described.

Example 1

A preparation method of modified tea saponin comprises the following steps:

1. pretreatment: mixing tea saponin with sodium sulfate according to the ratio of 30: 1, uniformly mixing, and then carrying out vacuum freezing treatment, wherein the vacuum degree of the vacuum freezing treatment is controlled to be 0.05MPa, the temperature is controlled to be-20 ℃, the time of the vacuum freezing treatment is 1.5h, and the pretreated tea saponin is obtained after the vacuum treatment is finished;

2. primary modification: adding formic acid, lactic acid, origanum oil and thymol into tea saponin, uniformly mixing to obtain a raw material mixture, carrying out micro-current treatment while carrying out ultrasonic oscillation on the raw material mixture, controlling the ultrasonic oscillation frequency of the ultrasonic oscillation to be 50Hz, controlling the micro-current to be 7uA, and controlling the time of the ultrasonic oscillation and the micro-current treatment to be 40min, thus obtaining the tea saponin after primary modification after the treatment is finished.

In the primary modification step, the mass ratio of the tea saponin to the formic acid to the lactic acid to the origanum oil to the thymol is 20:3:6:2: 3.

3. And (3) secondary modification: adding saccharifying enzyme, neutral cellulase and ligninase into the tea saponin after the primary modification, controlling the temperature to be 25 ℃, starting stirring, controlling the stirring speed to be 100rpm, stopping stirring after stirring for 1h, controlling the temperature to be 70 ℃, and standing for 1.5h at 70 ℃ to obtain the tea saponin after the secondary modification.

The activity of the saccharifying enzyme is 20000U/g; the activity of the neutral cellulase is 4000U/g; the activity of the ligninase is 1000U/g.

The tea saponin, the saccharifying enzyme, the neutral cellulase and the ligninase which are subjected to primary modification in the secondary modification step are in a mass ratio of 200:1:0.5: 2.

4. And (3) drying treatment: and (2) placing the secondarily modified tea saponin into a vacuum freeze dryer for vacuum freeze drying, firstly vacuumizing to 50kPa and starting refrigeration, reducing the temperature of a cold trap of the vacuum freeze dryer to-30 ℃ within 1.5 hours, then treating at the low temperature of-30 ℃ for 1 hour, slowly heating the product by a heating system after slowly heating the product at the temperature of 1 ℃/min, stopping heating when the temperature is raised to 40 ℃, and treating at the constant temperature of 40 ℃ for 4 hours to obtain the modified tea saponin.

Example 2

A preparation method of modified tea saponin comprises the following steps:

1. pretreatment: mixing tea saponin with sodium sulfate according to the ratio of 32: 1, uniformly mixing, and then carrying out vacuum freezing treatment, wherein the vacuum degree of the vacuum freezing treatment is controlled to be 0.06MPa, the temperature is controlled to be-17 ℃, the time of the vacuum freezing treatment is 1.7h, and the pretreated tea saponin is obtained after the vacuum treatment is finished;

2. primary modification: adding formic acid, lactic acid, origanum oil and thymol into tea saponin, uniformly mixing to obtain a raw material mixture, carrying out micro-current treatment while carrying out ultrasonic oscillation on the raw material mixture, controlling the ultrasonic oscillation frequency of the ultrasonic oscillation to be 55Hz, controlling the micro-current to be 8uA, and controlling the time of the ultrasonic oscillation and the micro-current treatment to be 45min, thus obtaining the tea saponin after primary modification after the treatment is finished.

In the primary modification step, the mass ratio of the tea saponin to the formic acid to the lactic acid to the origanum oil to the thymol is 22:3.5:7:2.5: 4.

3. And (3) secondary modification: and adding saccharifying enzyme, neutral cellulase and ligninase into the tea saponin subjected to the primary modification, controlling the temperature to be 27 ℃, starting stirring, controlling the stirring speed to be 110rpm, stirring for 1.2h, stopping stirring, controlling the temperature to be 75 ℃, and standing for 1.7h at 75 ℃ to obtain the tea saponin subjected to the secondary modification.

The activity of the saccharifying enzyme is 22000U/g; the activity of the neutral cellulase is 4500U/g; the activity of the ligninase is 1500U/g.

The mass ratio of the tea saponin, the saccharifying enzyme, the neutral cellulase and the ligninase after the primary modification in the secondary modification step is 210:1.5:0.7: 3.

4. And (3) drying treatment: and (2) placing the secondarily modified tea saponin into a vacuum freeze dryer for vacuum freeze drying, firstly vacuumizing to 55kPa and starting refrigeration, reducing the temperature of a cold trap of the vacuum freeze dryer to-25 ℃ within 1.7 hours, then treating at-25 ℃ for 1.2 hours, slowly heating the product by a heating system, controlling the heating rate to be 1.5 ℃/min, stopping heating when the temperature is increased to 42 ℃, and treating at 42 ℃ for 4.5 hours to obtain the modified tea saponin.

Example 3

A preparation method of modified tea saponin comprises the following steps:

1. pretreatment: mixing tea saponin with sodium sulfate according to the following ratio of 35: 1, uniformly mixing, and then carrying out vacuum freezing treatment, wherein the vacuum degree of the vacuum freezing treatment is controlled to be 0.07MPa, the temperature is controlled to be-15 ℃, the time of the vacuum freezing treatment is 2 hours, and the pretreated tea saponin is obtained after the vacuum treatment is finished;

2. primary modification: adding formic acid, lactic acid, origanum oil and thymol into tea saponin, uniformly mixing to obtain a raw material mixture, carrying out micro-current treatment while carrying out ultrasonic oscillation on the raw material mixture, controlling the ultrasonic oscillation frequency of the ultrasonic oscillation to be 60Hz, controlling the micro-current to be 9uA, and controlling the time of the ultrasonic oscillation and the micro-current treatment to be 50min, thus obtaining the tea saponin after primary modification after the treatment is finished.

In the primary modification step, the mass ratio of the tea saponin to the formic acid to the lactic acid to the origanum oil to the thymol is 25:4:8:3: 5.

3. And (3) secondary modification: adding saccharifying enzyme, neutral cellulase and ligninase into the tea saponin after the primary modification, controlling the temperature to be 30 ℃, starting stirring, controlling the stirring speed to be 120rpm, stirring for 1.5h, stopping stirring, controlling the temperature to be 80 ℃, and standing for 2h at 80 ℃ to obtain the tea saponin after the secondary modification.

The activity of the saccharifying enzyme is 25000U/g; the activity of the neutral cellulase is 5000U/g; the activity of the ligninase is 2000U/g.

The tea saponin, the saccharifying enzyme, the neutral cellulase and the ligninase which are subjected to primary modification in the secondary modification step are mixed according to the mass ratio of 220:2:1: 4.

4. And (3) drying treatment: and (2) placing the secondarily modified tea saponin into a vacuum freeze dryer for vacuum freeze drying, firstly vacuumizing to 60kPa and starting refrigeration, reducing the temperature of a cold trap of the vacuum freeze dryer to-20 ℃ within 2 hours, then treating at the low temperature of-20 ℃ for 1.5 hours, slowly heating the product by a heating system, controlling the heating speed to be 2 ℃/min, stopping heating when the temperature is raised to 45 ℃, and treating at the constant temperature of 45 ℃ for 5 hours to obtain the modified tea saponin.

Example 4

A feed additive composition based on tea saponin as a solubilizer comprises the following raw materials in parts by weight: 5 parts of modified tea saponin prepared in example 1, 20 parts of formic acid, 1 part of lactic acid, 0.2 part of DL-methionine, 0.1 part of medium chain triglyceride, 0.2 part of origanum oil, 0.001 part of thymol, 40 parts of silicon dioxide powder.

The particle size of the silica powder was 3 μm.

A preparation method of a feed additive composition based on tea saponin as a solubilizer specifically comprises the following steps:

1. primary mixing: uniformly mixing the modified tea saponin prepared in the example 1, formic acid, lactic acid, DL-methionine, medium-chain triglyceride, oregano oil and thymol, performing ultrasonic oscillation, controlling the power of the ultrasonic oscillation to be 180W, controlling the time of the ultrasonic oscillation to be 30min, and obtaining a feed additive after primary mixing after the ultrasonic oscillation is finished;

2. and (3) secondary mixing: and adding silicon dioxide powder into the feed additive subjected to primary mixing to obtain a secondary mixture, then placing the secondary mixture into a homogenizer for homogenization, controlling the homogenization speed of the homogenizer to be 3000rpm, controlling the homogenization temperature to be 60 ℃, and obtaining the feed additive composition based on tea saponin as a solubilizer after homogenization.

Example 5

A feed additive composition based on tea saponin as a solubilizer comprises the following raw materials in parts by weight: 20 parts of modified tea saponin prepared in example 2, 22 parts of formic acid, 2 parts of lactic acid, 0.2 part of DL-methionine, 3 parts of medium chain triglyceride, 1 part of oregano oil, 0.001 part of thymol and 45 parts of silicon dioxide powder.

The particle size of the silicon dioxide powder is 4 μm.

A preparation method of a feed additive composition based on tea saponin as a solubilizer specifically comprises the following steps:

1. primary mixing: uniformly mixing the modified tea saponin prepared in the example 2, formic acid, lactic acid, DL-methionine, medium-chain triglyceride, oregano oil and thymol, and then carrying out ultrasonic oscillation, wherein the power of the ultrasonic oscillation is controlled to be 190W, the time of the ultrasonic oscillation is 35min, and the feed additive after primary mixing is obtained after the ultrasonic oscillation is finished;

2. and (3) secondary mixing: adding silicon dioxide powder into the primarily mixed feed additive to obtain a secondary mixture, then placing the secondary mixture into a homogenizer for homogenization, controlling the homogenization speed of the homogenizer to be 3100rpm and the homogenization temperature to be 65 ℃, and obtaining the feed additive composition based on tea saponin as a solubilizer after homogenization.

Example 6

A feed additive composition based on tea saponin as a solubilizer comprises the following raw materials in parts by weight: 30 parts of modified tea saponin prepared in example 3, 25 parts of formic acid, 3 parts of lactic acid, 0.3 part of DL-methionine, 5 parts of medium chain triglyceride, 2 parts of oregano oil, 0.002 part of thymol and 50 parts of silicon dioxide powder.

The particle size of the silicon dioxide powder is 5 μm.

A preparation method of a feed additive composition based on tea saponin as a solubilizer specifically comprises the following steps:

1. primary mixing: uniformly mixing the modified tea saponin prepared in the example 3, formic acid, lactic acid, DL-methionine, medium-chain triglyceride, oregano oil and thymol, and then carrying out ultrasonic oscillation, wherein the power of the ultrasonic oscillation is controlled to be 200W, the time of the ultrasonic oscillation is 40min, and the feed additive after primary mixing is obtained after the ultrasonic oscillation is finished;

2. and (3) secondary mixing: and adding silicon dioxide powder into the feed additive subjected to primary mixing to obtain a secondary mixture, then placing the secondary mixture into a homogenizer for homogenization, controlling the homogenization speed of the homogenizer to be 3200rpm, controlling the homogenization temperature to be 70 ℃, and obtaining the feed additive composition based on tea saponin as a solubilizer after homogenization.

Comparative example 1

The raw materials and preparation method of a feed additive composition based on tea saponin as a solubilizer are the same as those of example 4, and the differences are as follows: example 1 a modified tea saponin was prepared by omitting the micro-current treatment in the modification step 2.

Comparative example 2

The raw materials and preparation method of a feed additive composition based on tea saponin as a solubilizer are the same as those of example 4, and the differences are as follows: example 1 in the preparation method of modified tea saponin, the drying treatment step of step 4 omits vacuum freeze-drying, and the modified tea saponin is obtained by directly treating the twice modified tea saponin at the constant temperature of 40 ℃ for 5 h.

Comparative example 3

A feed additive composition based on tea saponin as solubilizer comprises the same raw materials as in example 4, and is different from the following raw materials: a preparation method of a feed additive composition based on tea saponin as a solubilizer comprises directly mixing all raw materials, and then performing ultrasonic oscillation, wherein the power of the ultrasonic oscillation is controlled to be 180W, the time of the ultrasonic oscillation is 30min, and the feed additive composition based on tea saponin as a solubilizer is obtained after the ultrasonic oscillation is finished.

Animal feeding experiments were carried out on the tea saponin-based solubilizing agent feed additive compositions prepared in examples 4 to 6 and comparative examples 1 to 3, according to the following specific experimental methods:

selecting 120 cows with the age of 8-10 months, wherein the cows are close in age, the growth conditions are basically the same, the weight is 180-220kg, the cows are randomly divided into 6 groups, 20 cows in each group, and the feed additives prepared in the examples 4-6 and the comparative examples 1-3 with the mass fraction of 5% are respectively added into the feed, wherein a feed color manufacturer is a big-end group, and after feeding for 30 days, the weight conditions before and after feeding, the average feed intake and the disease occurrence rate during feeding are measured, and the test results are as follows:

the feed additive compositions prepared in examples 4 to 6 and comparative examples 1 to 3, which were based on tea saponin as a solubilizing agent, were subjected to irritation tests, specifically as follows:

selecting 120 cows with the age of 8-10 months, wherein the cows are close in age, the growth conditions are basically the same, the weight is 180-one 220kg, the cows are randomly divided into 6 groups, 20 cows in each group, and the feed additives prepared in the examples 4-6 and the comparative examples 1-3 with the mass fraction of 5% are respectively added into the feed, wherein the feed color manufacturer is a big group, and then after feeding, feeding for 30min, feeding for 1h, feeding for 2h, and feeding for 3h, the esophagus irritation test is carried out by using an esophagus detector, and the test results are as follows:

the feed additive compositions prepared in examples 4 to 6 and comparative examples 1 to 3, which were based on tea saponin as a solubilizing agent, were tested for their bacteriostatic activity by the following specific test methods:

selecting 120 dairy cows with age of 8-10 months, wherein the age of the dairy cows is relatively close, the growth conditions are basically the same, the weight of the dairy cows is 180-220kg, the dairy cows are randomly divided into 6 groups, 20 dairy cows in each group are added with the feed additives prepared in the examples 4-6 and the comparative examples 1-3 respectively, the feed color manufacturers are regular groups, then detecting the number of escherichia coli and staphylococcus aureus in dairy cow dung before and after feeding, and calculating the reduction rate of the escherichia coli and the staphylococcus aureus, wherein the calculation results are as follows:

all percentages used in the present invention are mass percentages unless otherwise indicated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.