阅读说明：本技术 一种放心蛋鸡饲料及其制备方法 (Laying hen feed capable of relieving oneself and preparation method thereof ) 是由 廖建平 关伟 朱宏 廖宇彤 廖宇翔 文钰 刘丽梅 李兴宇 周宝诗 于 2021-01-22 设计创作，主要内容包括：本发明公开了一种放心蛋鸡饲料,按照质量份数,包括以下的组分：玉米：61-70份、豆粕：15-27份、鱼粉：0-2份、麦麸：3.3-10份、磷酸氢钙：1-1.3份、石粉：0-8份、食盐：0.25-0.4份、米糠：0-4份、蛋氨酸：0.2-0.8份、赖氨酸：0-0.5份、苏氨酸：0-0.3份、精氨酸：0.78-1.12份、色氨酸：0-0.1份；复合维生素：0.35-0.5份、复合微量元素：0.35-0.5份、植物油：0-4份；腐殖酸败物：0-0.55份。该放心蛋鸡饲料能提高鸡蛋的品质,达到放心蛋的品质要求。(The invention discloses a reassuring laying hen feed which comprises the following components in parts by weight: corn: 61-70 parts of soybean meal: 15-27 parts of fish meal: 0-2 parts of wheat bran: 3.3-10 parts of calcium hydrophosphate: 1-1.3 parts of stone powder: 0-8 parts of salt: 0.25-0.4 parts of rice bran: 0-4 parts of methionine: 0.2-0.8 parts, lysine: 0-0.5 parts, threonine: 0-0.3 parts of arginine: 0.78-1.12 parts, tryptophan: 0-0.1 part; vitamin complex: 0.35-0.5 parts of composite trace elements: 0.35-0.5 parts of vegetable oil: 0-4 parts of a solvent; humic and rancid: 0 to 0.55 portion. The feed for laying hens at ease can improve the quality of eggs and meet the quality requirement of the eggs at ease.)

1. A laying hen feed with a relieved effect is characterized in that: the composition comprises the following components in parts by weight:

corn: 61-70 parts of soybean meal: 15-27 parts of fish meal: 0-2 parts of wheat bran: 3.3-10 parts of calcium hydrophosphate: 1-1.3 parts of stone powder: 0-8 parts of salt: 0.25-0.4 parts of rice bran: 0-4 parts of methionine: 0.2-0.8 parts, lysine: 0-0.5 parts, threonine: 0-0.3 parts of arginine: 0.78-1.12 parts, tryptophan: 0-0.1 part; vitamin complex: 0.35-0.5 parts of composite trace elements: 0.35-0.5 parts of vegetable oil: 0-4 parts of a solvent; humic and rancid: 0 to 0.55 portion.

2. The feed for laying hens at rest according to claim 1, wherein: the compound vitamin comprises vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B12, nicotinic acid, folic acid, biotin and calcium pantothenate.

3. The feed for laying hens at rest according to claim 1, wherein: the compound trace elements comprise copper, iron, manganese and zinc elements.

4. The feed for laying hens at rest according to claim 1, wherein: the quality requirements of the corn are as follows: the color and smell are normal, the crude protein (dry basis) is more than or equal to 8.0 percent, the volume weight is more than or equal to 685g/L, the content of imperfect granules is less than or equal to 6.5 percent, the content of mildewed granules is less than or equal to 2.0 percent, the content of impurities is less than or equal to 1.0 percent, and the content of water is less than or equal to 14.0 percent.

5. The feed for laying hens at rest according to claim 1, wherein: the quality requirements of the soybean meal are as follows: crude protein is more than or equal to 48.0 percent, crude fiber is less than or equal to 7 percent, lysine is more than or equal to 2.50 percent, water is less than or equal to 12.5 percent, crude ash is less than or equal to 7.0 percent, and the solubility of potassium hydroxide protein is more than or equal to 75.0 degrees.

6. The feed for laying hens at rest according to claim 1, wherein: the fish meal comprises the following components in parts by mass: the fish protein powder has no caking, no mildew, normal fish smell and no scorched smell, the crude protein is more than or equal to 60 percent, the crude fat is less than or equal to 12 percent, the water content is less than or equal to 10 percent, the salt content is less than or equal to 3 percent, the ash content is less than or equal to 18 percent, the sand content is less than or equal to 2 percent, the lysine is more than or equal to 4.4 percent, the methionine is more than or equal to 1.5 percent.

7. The feed for laying hens at rest according to claim 1, wherein: the quality requirements of the wheat bran are as follows: the fiber is in the shape of fine paper scraps, has fresh and consistent color and no fermentation, mildew, caking and peculiar smell, and has more than or equal to 13.0 percent of crude protein, less than 10.0 percent of crude fiber, less than 6.0 percent of ash and less than 13.0 percent of moisture.

8. The feed for laying hens at rest according to claim 1, wherein: the quality requirements of the rice bran are as follows: the water content is less than or equal to 13.0 percent, the crude protein is more than or equal to 12.0 percent, the crude fiber is less than 7.0 percent, and the crude ash content is less than 9.0 percent.

9. The feed for laying hens at rest according to claim 1, wherein: the quality requirements of the stone powder are as follows: the calcium content is more than or equal to 35 percent, and the particle size (passing through a test sieve with a void diameter of 0.9 mm) is more than or equal to 90 percent.

10. A method of preparing a reassuring egg chicken feed according to any one of claims 1 to 9, comprising: the method comprises the following steps:

(1) mixing semen Maydis, testa Tritici, and testa oryzae by equivalent addition method, and pulverizing;

(2) grinding soybean meal into soybean meal powder and adding the soybean meal powder into the mixture prepared in the step (1);

(3) adding fish meal, calcium hydrophosphate, stone powder, salt, methionine, lysine, threonine, arginine, tryptophan, compound vitamins, compound trace elements, vegetable oil and humic rancid into the mixture prepared in the step (2), and performing puffing granulation to obtain the laying hen feed.

Technical Field

The invention belongs to the technical field of livestock breeding, and particularly relates to a safe laying hen feed and a preparation method thereof.

Background

In recent years, the stock raising industry in China enters a rapid development period, and the laying hen breeding also slowly enters a large-scale, centralized and mechanized era. At present, the number of stocked layers in China is more than 15 hundred million, and various chicken feeds are produced according to the development of the layer breeding industry, but the existing chicken feeds generally have the problem of unbalanced nutrition, so that the quality of eggs is poor, and the quality requirement of safe eggs cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the laying hen feed capable of improving the quality of eggs and meeting the quality requirement of the laying hens and the preparation method thereof.

The technical purpose of the invention is realized by the following technical scheme:

a safe laying hen feed comprises the following components in parts by weight: corn: 61-70 parts of soybean meal: 15-27 parts of fish meal: 0-2 parts of wheat bran: 3.3-10 parts of calcium hydrophosphate: 1-1.3 parts of stone powder: 0-8 parts of salt: 0.25-0.4 parts of rice bran: 0-4 parts of methionine: 0.2-0.8 parts, lysine: 0-0.5 parts, threonine: 0-0.3 parts of arginine: 0.78-1.12 parts, tryptophan: 0-0.1 part; vitamin complex: 0.35-0.5 parts of composite trace elements: 0.35-0.5 parts of vegetable oil: 0-4 parts of a solvent; humic and rancid: 0 to 0.55 portion.

Preferably, the vitamin complex comprises vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B12, niacin, folic acid, biotin and calcium pantothenate.

Preferably, the compound trace elements comprise copper, iron, manganese and zinc elements.

Preferably, the quality requirements of the corn are as follows: the color and smell are normal, the crude protein (dry basis) is more than or equal to 8.0 percent, the volume weight is more than or equal to 685g/L, the content of imperfect granules is less than or equal to 6.5 percent, the content of mildewed granules is less than or equal to 2.0 percent, the content of impurities is less than or equal to 1.0 percent, and the content of water is less than or equal to 14.0 percent.

Preferably, the quality requirements of the soybean meal are as follows: crude protein is more than or equal to 48.0 percent, crude fiber is less than or equal to 7 percent, lysine is more than or equal to 2.50 percent, water is less than or equal to 12.5 percent, crude ash is less than or equal to 7.0 percent, and the solubility of potassium hydroxide protein is more than or equal to 75.0 degrees.

Preferably, the quality requirements of the fish meal are as follows: the fish protein powder has no caking, no mildew, normal fish smell and no scorched smell, the crude protein is more than or equal to 60 percent, the crude fat is less than or equal to 12 percent, the water content is less than or equal to 10 percent, the salt content is less than or equal to 3 percent, the ash content is less than or equal to 18 percent, the sand content is less than or equal to 2 percent, the lysine is more than or equal to 4.4 percent, the methionine is more than or equal to 1.5 percent.

Preferably, the wheat bran has the following quality requirements: the fiber is in the shape of fine paper scraps, has fresh and consistent color and no fermentation, mildew, caking and peculiar smell, and has more than or equal to 13.0 percent of crude protein, less than 10.0 percent of crude fiber, less than 6.0 percent of ash and less than 13.0 percent of moisture.

Preferably, the rice bran has the following quality requirements: the water content is less than or equal to 13.0 percent, the crude protein is more than or equal to 12.0 percent, the crude fiber is less than 7.0 percent, and the crude ash content is less than 9.0 percent.

Preferably, the quality requirements of the stone powder are as follows: the calcium content is more than or equal to 35 percent, and the particle size (passing through a test sieve with a void diameter of 0.9 mm) is more than or equal to 90 percent.

Preferably, the quality requirements of the methionine are as follows: the methionine in the invention is DL-methionine produced by taking methylthio-lactaldehyde, cyanide, sulfuric acid and sodium hydroxide as main raw materials. DL-methionine is more than or equal to 98 percent, and the drying weight loss is less than or equal to 0.5 percent.

Preferably, the quality requirements of the lysine are as follows: the L-lysine hydrochloride is prepared by fermenting and extracting the raw materials of starch and sugar. The content (calculated by lysine hydrochloride dry basis) is more than or equal to 98.5 percent, and the loss on drying is less than or equal to 1.0 percent.

Preferably, the quality requirements of the copper are as follows: the copper in the invention is copper sulfate monohydrate or copper sulfate pentahydrate prepared by an etching solution recovery method or a red copper high-temperature roasting method. The copper sulfate monohydrate is white powder with slight bluish color, and the copper sulfate pentahydrate is bluish crystal granule or bluish powder. Copper sulfate is more than or equal to 98.5 percent, copper in copper sulfate monohydrate is more than or equal to 35.7 percent, copper in copper sulfate pentahydrate is more than or equal to 25.1 percent, total arsenic (As) is less than or equal to 4mg/kg, lead (Pb) is less than or equal to 5mg/kg, cadmium (Cd) is less than or equal to 0.1mg/kg, mercury (Hg) is less than or equal to 0.2mg/kg, water insoluble substances are less than or equal to 0.5 percent, the fineness is more than or equal to 95 percent (copper sulfate monohydrate) through a 200 mu m test sieve and more than or equal to 95 percent (copper sulfate pentahydrate) through a.

Preferably, the quality requirements of the iron are as follows: the iron in the invention is ferrous sulfate monohydrate produced by a sulfuric acid method or a titanium dioxide byproduct method. The product is gray white powder. Ferrous sulfate (calculated by FeSO4. H2O) is more than or equal to 91.3 percent, ferrous iron (calculated by Fe) is more than or equal to 30.0 percent, ferric iron (calculated by Fe) is less than or equal to 0.2 percent, total arsenic (As) is less than or equal to 2mg/kg, lead (Pb) is less than or equal to 15mg/kg, cadmium (Cd) is less than or equal to 3mg/kg, and the fineness (passing through a test sieve of 180 mu m) is more than or equal to 95 percent.

Preferably, the quality requirements of the manganese are as follows: the manganese sulfate monohydrate produced by using manganese ores As main raw materials is slightly pink crystal powder, manganese sulfate (calculated by MnSO4. H2O) is more than or equal to 98.0 percent, manganese (Mn) is more than or equal to 31.8 percent, total arsenic (As) is less than or equal to 3mg/kg, lead (Pb) is less than or equal to 5mg/kg, cadmium (Cd) is less than or equal to 10mg/kg, mercury (Hg) is less than or equal to 0.2mg/kg, water-insoluble substances are less than or equal to 0.1 percent, and the granularity (passing through a 250 mu m test sieve) is more than or equal to 95 percent.

Preferably, the zinc quality requirements are as follows: the zinc in the invention is zinc sulfate monohydrate obtained by carrying out acidolysis reaction on a zinc-containing raw material, and carrying out secondary purification, concentration crystallization and drying on the obtained zinc sulfate solution by adopting a non-oxidation iron removal process. The product is white or light yellow powder. The test is passed through, the zinc sulfate content (calculated by ZnSO4. H2O) is more than or equal to 90.6 percent, the zinc (calculated by Zn) is more than or equal to 33.0 percent, the ferrous sulfate content (calculated by Fe) is 0.50 to 1.85 percent, the total arsenic (calculated by As) is less than or equal to 1.0mg/kg, the lead (calculated by Pb) is less than or equal to 5.0mg/kg, the cadmium (calculated by Cd) is less than or equal to 8.0mg/kg, and the acidity is tested; the oxidizing substance test shows that the particle size (250 mu m test sieve passing rate) is more than or equal to 96.0 percent.

Preferably, the quality requirements of the vitamin A are as follows: the vitamin A in the invention takes chemically synthesized vitamin A palmitate as a raw material, takes modified starch and the like as auxiliary materials, is added with a proper amount of antioxidant, and is produced into vitamin A palmitate powder by a spraying process. The product is light yellow to yellow powder, and has no odor.

The product specification is as follows: 25 ten thousand IU/g; the content of the vitamin A palmitic acid is more than or equal to 95.0 percent, the total content of the vitamin A alcohol and the vitamin A acetate is less than or equal to 1.0 percent, the drying weight loss is less than or equal to 8.0 percent, the heavy metal (calculated by Pb) is less than or equal to 10mg/kg, and the total arsenic (As) is less than or equal to 2 mg/kg.

Granularity: 100% pass through a test sieve with the aperture of 0.84mm, and more than 85% pass through a test sieve with the aperture of 0.425.

Preferably, the quality requirements of the vitamin D3 are as follows: the vitamin D3 is prepared by dissolving chemically synthesized vitamin D3 resin oil which takes wool cholesterol as a starting material in vegetable oil and adding a proper amount of antioxidant. The product is yellow to brown clear liquid, and can be solidified or crystallized at low temperature. The content (calculated by C27H44O, the percentage of the expressed amount) is more than or equal to 95.0 percent, the acid value is less than or equal to 2.0mg/g, the peroxide value is less than or equal to 10.0mmol/kg, the heavy metal (calculated by Pb) is less than or equal to 10.0mg/kg, and the arsenic is less than or equal to 2.0 mg/kg.

Preferably, the quality requirements of the vitamin E are as follows: the vitamin E in the invention is dl-a-tocopherol acetate prepared by chemical synthesis by using 2, 3, 5-trimethylhydroquinone and isophytol as raw materials. The product is a yellowish or yellowish viscous liquid, and has no odor. The content (calculated by C31H52O 3) is more than or equal to 92.0 percent, the refractive index (n20D) is 1.494-1.499, the absorption coefficient (E1 percent and 1cm) is 41.0-45.0, the acidity (the volume of consuming 0.1mol/L sodium hydroxide titration solution) is less than or equal to 2.0ml, the tocopherol (the volume of consuming 0.01mol/L cerium sulfate titration solution) is less than or equal to 1.0ml, and the heavy metal (calculated by Pb) is less than or equal to 0.001 percent.

Preferably, the quality requirements of the vitamin K3 are as follows: the vitamin K3 in the invention is menadione sodium bisulfite (vitamin K3) containing 1-3 crystal water and prepared by a chemical synthesis method. The product is white crystalline powder, and has no odor or slightly special odor. Menadione sodium bisulfite (calculated by menadione) is more than or equal to 50.0 percent, sodium bisulfate is less than or equal to 5.0 percent in terms of free sodium bisulfate, the solution has color and luster, no yellow-green No. 4 standard colorimetric solution is obtained, and menadione sulfonate tests show that no precipitation occurs, the water content is less than or equal to 13.0 percent, the chromium is less than or equal to 50mg/kg, the heavy metal (calculated by Pb) is less than or equal to 20mg/kg, and the total arsenic (As) is less than or equal to 2 mg/kg.

Preferably, the quality requirements of the vitamin B1 are as follows: the vitamin B1 in the invention is thiamine nitrate (vitamin B1) prepared by chemical synthesis by using aminopropionitrile as a raw material. The product is white or off-white crystal or crystalline powder, and has slight odor. Thiamine nitrate (calculated by C12H17N5O4S dry basis) is more than or equal to 98.0 percent, the loss on drying is less than or equal to 1.0 percent, the ignition residue is less than or equal to 0.1 percent, the heavy metal (calculated by Pb) is less than or equal to 10.0mg/kg, the total arsenic (calculated by As) is less than or equal to 2.0mg/kg, the acidity: 6.0 to 7.5 percent and chloride (calculated by Cl) is less than or equal to 0.06 percent.

Preferably, the quality requirements of the vitamin B2 are as follows: vitamin B2 in the present invention is 80% riboflavin (vitamin B2) produced by biofermentation. The product turns to brown yellow particles with slight odor. The content (based on C17H10N4O6) (dry basis) is more than or equal to 80.0 percent, the loss on drying is less than or equal to 3.0 percent, the ignition residue is less than or equal to 3.0 percent, the granularity is at least 90 percent passing through a standard sieve of 0.28 mm.

Preferably, the quality requirements of the nicotinic acid are as follows: the nicotinic acid in the invention is prepared by a chemical synthesis method. The product is white or quasi-white powder, and has no odor. The content of nicotinic acid (calculated by C6H5NO2 dry basis) is more than or equal to 99.0 percent, the melting point is 234-238 ℃, the loss on drying is less than or equal to 0.50 percent, the ignition residue is less than or equal to 0.10 percent, the heavy metal (calculated by Pb) is less than or equal to 20mg/kg, the total arsenic (As) is less than or equal to 2mg/kg, the chloride (calculated by CL) is less than or equal to 0.02 percent, and the sulfate (calculated by SO 2-is less than or equal to 0.02 percent.

Preferably, the folic acid has the following quality requirements: the folic acid is prepared by a chemical synthesis method, is yellow or orange yellow crystalline powder, is odorless and tasteless, contains not less than 96.0 percent of folic acid (calculated by C19H19M7O6 on a dry basis), not more than 8.5 percent of water, not more than 0.5 percent of burning residues, not more than 10.0mg/kg of heavy metals (calculated by Pb), and not more than 2.0mg/kg of total arsenic.

Preferably, the quality requirements of the biotin are as follows: the biotin in the invention is D-biotin which is prepared by taking ketene or olefine acid as a raw material and carrying out chemical synthesis. The product is white or off-white crystal or crystalline powder. The content of D-biotin (C10H16O2S, calculated by dry basis) is more than or equal to 97.5 percent, the loss on drying is less than or equal to 0.5 percent, the specific optical rotation is 89.0-93.0 ℃ and dm2/kg, the content of single impurity is less than or equal to 1.0 percent, the total amount of impurity is less than or equal to 2.0 percent, the clarity of the solution is tested, the burning residue is less than or equal to 0.1 percent, the heavy metal (calculated by Pb) is less than or equal to 10mg/kg, and the total arsenic (calculated by As) is less than or equal to 2 mg/kg.

Or the D-biotin with the content of 2 percent is prepared by taking maltodextrin as a carrier and D-biotin as a raw material and adopting a high-pressure spraying process. The product is white or white-like flowable powder. The content (calculated by C10H16N2O 3S) is more than or equal to 2.0 percent, the loss on drying is less than or equal to 5.0 percent, the total arsenic (calculated by As) is less than or equal to 1.0mg/kg, the heavy metal is less than or equal to 10.0 percent, the granularity is determined, 95 percent passes through an analysis sieve with the aperture of 0.18mm (80 meshes), 90 percent passes through an analysis sieve with the aperture of 0.15mm (100 meshes), the dissolubility and the solution are clear, the cadmium is less than or equal to 3mg/kg, the mercury is less than or equal to 0.1mg/kg, the fluoride is less than or equal to 50mg/kg, and the dioxin is less.

Preferably, the quality requirements of the calcium pantothenate are as follows: the calcium pantothenate in the present invention is D-calcium pantothenate produced by a synthesis method. The product is white to off-white powder and odorless. Calcium pantothenate (C18H22CaN2O10, calculated by dry product) is more than or equal to 98.0%, calcium content (Ca, calculated by dry product) is 8.2-8.6%, nitrogen content (calculated by dry product) is 5.7-6.0%, heavy metal (calculated by Pb) is less than or equal to 0.002%, drying weight loss is less than or equal to 5.0%, and methanol is less than or equal to 0.3%.

The invention also aims to provide a preparation method of the feed for the reassuring laying hens, which comprises the following steps:

the preparation method of the reassuring layer feed comprises the following steps:

(1) mixing semen Maydis, testa Tritici, and testa oryzae by equivalent addition method, and pulverizing;

(2) grinding soybean meal into soybean meal powder and adding the soybean meal powder into the mixture prepared in the step (1);

(3) adding fish meal, calcium hydrophosphate, stone powder, salt, methionine, lysine, threonine, arginine, tryptophan, compound vitamins, compound trace elements, vegetable oil and humic rancid into the mixture prepared in the step (2), and performing puffing granulation to obtain the laying hen feed.

The invention has the beneficial effects that: the feed for the laying hens capable of laying the eggs at ease can obviously improve the quality of the eggs, so that the eggs can meet the quality requirement of the eggs at ease.

Detailed Description

The present invention will be further described with reference to the following specific examples.

Example 1:

a safe laying hen feed comprises the following components in parts by weight: 66 portions of corn, 21.5 portions of soybean meal, 1 portion of fish meal, 2 portions of wheat bran, 0.3 portion of calcium hydrophosphate, 0.45 portion of salt, 0.2 portion of DL-methionine, 0.2 portion of threonine, 0.5 portion of arginine, 0.1 portion of tryptophan, 0.35 portion of vitamin complex, 0.35 portion of trace element complex, 0.5 portion of vegetable oil and 0.55 portion of humic acid.

Wherein the compound vitamin comprises vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, nicotinic acid, folic acid, biotin and D-calcium pantothenate, and the contents of the vitamin A, the vitamin D3, the vitamin E, the vitamin K3, the vitamin B1, the vitamin B2, the vitamin B6, the vitamin B12, the nicotinic acid, the folic acid, the biotin and the D-calcium pantothenate in the feed: 4000IU/kg of vitamin A, 3000IU/kg of vitamin D3, 20IU/kg of vitamin E, 1mg/kg of vitamin K3, 4mg/kg of vitamin B1, 6mg/kg of vitamin B2, 6mg/kg of vitamin B6, 8 mug/kg of vitamin B12, 30mg/kg of nicotinic acid, 0.5mg/kg of folic acid, 0.2mg/kg of biotin and 12.5mg/kg of D-calcium pantothenate.

Wherein the composite trace elements comprise copper, iron, manganese, zinc, selenium and iodine elements, and the contents of the copper, iron, manganese, zinc, selenium and iodine elements in the feed are respectively as follows: 1mg/kg of copper, 50mg/kg of iron, 65mg/kg of manganese, 60mg/kg of zinc, 3mg/kg of selenium and 3mg/kg of iodine.

The preparation method of the reassurance laying hen feed comprises the following steps:

(1) mixing semen Maydis and testa Tritici by equal amount and gradually adding, and pulverizing;

(2) grinding soybean meal into soybean meal powder and adding the soybean meal powder into the mixture prepared in the step (1);

(3) adding fish meal, calcium hydrophosphate, salt, DL-methionine, threonine, arginine, tryptophan, compound vitamins, compound trace elements, vegetable oil and humic rancid into the mixture prepared in the step (2), and performing puffing granulation to obtain the laying hen feed.

Example 2:

a safe laying hen feed comprises the following components in parts by weight: 61.5 parts of corn, 21 parts of soybean meal, 4 parts of wheat bran, 1 part of calcium hydrophosphate, 2.5 parts of stone powder, 0.45 part of salt, 1 part of rice bran, 0.8 part of DL-methionine, 0.5 part of L-lysine, 0.2 part of L-threonine, 0.1 part of tryptophan, 0.5 part of vitamin complex, 0.5 part of compound trace element and 0.55 part of humic acid rancidity.

Wherein the compound vitamin comprises vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, nicotinic acid, folic acid, biotin and D-calcium pantothenate, and the contents of the vitamin A, the vitamin D3, the vitamin E, the vitamin K3, the vitamin B1, the vitamin B2, the vitamin B6, the vitamin B12, the nicotinic acid, the folic acid, the biotin and the D-calcium pantothenate in the feed: 4000IU/kg of vitamin A, 2600IU/kg of vitamin D3, 25IU/kg of vitamin E, 1mg/kg of vitamin K3, 4mg/kg of vitamin B1, 7mg/kg of vitamin B2, 6mg/kg of vitamin B6, 10 mug/kg of vitamin B12, 30mg/kg of nicotinic acid, 0.5mg/kg of folic acid, 20mg/kg of biotin and 10mg/kg of calcium D-pantothenate.

Wherein the composite trace elements comprise copper, iron, manganese, zinc, selenium and iodine elements, and the contents of the copper, iron, manganese, zinc, selenium and iodine elements in the feed are respectively as follows: 8mg/kg of copper, 70mg/kg of iron, 60mg/kg of manganese, 60mg/kg of zinc, 0.5mg/kg of selenium and 4mg/kg of iodine.

The preparation method of the reassurance laying hen feed comprises the following steps:

(1) mixing semen Maydis, testa Tritici, and testa oryzae by equivalent addition method, and pulverizing;

(2) grinding soybean meal into soybean meal powder and adding the soybean meal powder into the mixture prepared in the step (1);

(3) adding stone powder, calcium hydrophosphate, salt, DL-methionine, L-lysine, L-threonine, tryptophan, compound vitamins, compound trace elements and humic rancidity substances into the mixture prepared in the step (2), and performing puffing granulation to obtain the laying hen feed.

Example 3:

a safe laying hen feed comprises the following components in parts by weight: 61 parts of corn, 22 parts of bean pulp, 2 parts of wheat bran, 1 part of calcium hydrophosphate, 5 parts of stone powder, 0.45 part of salt, 1 part of rice bran, 0.8 part of DL-methionine, 0.5 part of L-lysine, 0.2 part of L-threonine, 0.1 part of tryptophan, 0.4 part of compound vitamin, 0.4 part of compound trace element and 0.55 part of humic acid rancidity.

Wherein the compound vitamin comprises vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, nicotinic acid, folic acid, biotin and D-calcium pantothenate, and the contents of the vitamin A, the vitamin D3, the vitamin E, the vitamin K3, the vitamin B1, the vitamin B2, the vitamin B6, the vitamin B12, the nicotinic acid, the folic acid, the biotin and the D-calcium pantothenate in the feed: 4000IU/kg of vitamin A, 2600IU/kg of vitamin D3, 25IU/kg of vitamin E, 1mg/kg of vitamin K3, 4mg/kg of vitamin B1, 7mg/kg of vitamin B2, 6mg/kg of vitamin B6, 10 mug/kg of vitamin B12, 30mg/kg of nicotinic acid, 0.5mg/kg of folic acid, 20mg/kg of biotin and 10mg/kg of calcium D-pantothenate.

Wherein the composite trace elements comprise copper, iron, manganese, zinc, selenium and iodine elements, and the contents of the copper, iron, manganese, zinc, selenium and iodine elements in the feed are respectively as follows: 8mg/kg of copper, 70mg/kg of iron, 60mg/kg of manganese, 60mg/kg of zinc, 0.5mg/kg of selenium and 4mg/kg of iodine.

The preparation method of the reassurance laying hen feed comprises the following steps:

(1) mixing semen Maydis, testa Tritici, and testa oryzae by equivalent addition method, and pulverizing;

(2) grinding soybean meal into soybean meal powder and adding the soybean meal powder into the mixture prepared in the step (1);

(3) adding stone powder, calcium hydrophosphate, salt, DL-methionine, L-lysine, L-threonine, tryptophan, compound vitamins, compound trace elements and humic rancidity substances into the mixture prepared in the step (2), and performing puffing granulation to obtain the laying hen feed.

Example 4:

a safe laying hen feed comprises the following components in parts by weight: 61 parts of corn, 17 parts of soybean meal, 5 parts of wheat bran, 1 part of calcium hydrophosphate, 4 parts of stone powder, 0.45 part of salt, 4 parts of rice bran, 0.4 part of DL-methionine, 0.3 part of L-lysine, 0.2 part of L-threonine, 0.1 part of tryptophan, 0.45 part of composite vitamin, 0.4 part of composite trace element and 0.35 part of humic acid rancidity.

Wherein the compound vitamins comprise vitamin A, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, nicotinic acid, folic acid, biotin and D-calcium pantothenate, and the contents of the vitamin A, the vitamin D3, the vitamin E, the vitamin B1, the vitamin B2, the vitamin B6, the vitamin B12, the nicotinic acid, the folic acid, the biotin and the D-calcium pantothenate in the feed are respectively as follows: 3000IU/kg of vitamin A, 1600IU/kg of vitamin D3, 20IU/kg of vitamin E, 4mg/kg of vitamin B1, 7mg/kg of vitamin B2, 6mg/kg of vitamin B6, 10 mug/kg of vitamin B12, 30mg/kg of nicotinic acid, 0.4mg/kg of folic acid, 10mg/kg of biotin and 10mg/kg of D-calcium pantothenate.

Wherein the composite trace elements comprise copper, iron, manganese, zinc, selenium and iodine elements, and the contents of the copper, iron, manganese, zinc, selenium and iodine elements in the feed are respectively as follows: 8mg/kg of copper, 70mg/kg of iron, 60mg/kg of manganese, 60mg/kg of zinc, 0.4mg/kg of selenium and 3mg/kg of iodine.

The preparation method of the reassurance laying hen feed comprises the following steps:

(1) mixing semen Maydis, testa Tritici, and testa oryzae by equivalent addition method, and pulverizing;

(2) grinding soybean meal into soybean meal powder and adding the soybean meal powder into the mixture prepared in the step (1);

(3) adding stone powder, calcium hydrophosphate, salt, DL-methionine, L-lysine, L-threonine, tryptophan, compound vitamins, compound trace elements and humic rancidity substances into the mixture prepared in the step (2), and performing puffing granulation to obtain the laying hen feed.

Test example:

1000 newly hatched healthy laying hens are randomly divided into two groups, one group is a test group, the other group is a control group, and each group comprises 500 laying hens. The control group was fed with a commercial general feed daily, and the test group was fed with the chicken feed of the present invention daily, wherein the test group was fed with the chicken feed of example 1 at 0-15 weeks of the growth stage, with the chicken feed of example 2 during 16 weeks-2% of the laying rate, with the chicken feed of example 3 at 2% of the laying rate-32 weeks, and with the chicken feed of example 4 after 32 weeks. And respectively counting the average weight, the laying rate and the average egg weight of two groups of laying hens at 35 weeks, and sampling and detecting the protein content, the microbial pollution condition, the heavy metal pollution condition and the safety condition of the eggs, wherein the detection results are as follows.

Table 1: basic situation

Table 2: microbial contamination of eggs

Table 3: heavy metal contamination of eggs

Item	Index (I)	Test group	Control group
				Mercury (in Hg)/(mg/kg)	≤0.03	0.006	0.025
Total arsenic (As)/(mg/kg)	≤0.5	0.02	0.42
				Lead (in Pb)/(mg/kg)	≤0.1	0.02	0.22
Chromium (in Cr)/(mg/kg)	≤1	0.12	1.13
				Cadmium (in Cd)/(mg/kg)	≤0.05	0.02	0.03

Table 4: egg safety profile

As can be seen from Table 1, the laying hens fed with the chicken feed have heavier weight and better laying rate, and meanwhile, the average weight of eggs is heavier and can reach 68.5g, and the protein content is also better and can reach 13.5g/100 g.

As can be seen from table 2, the eggs of the test group and the control group both satisfied the microbial contamination index, but the eggs laid by the laying hens fed with the chicken feed of the present invention were more excellent in both the total number of colonies and the coliform colony.

It can be seen from table 3 that the eggs laid by the experimental group of laying hens completely meet the heavy metal pollution index, and the eggs laid by the control group of laying hens exceed the standard in both lead and chromium.

It can be seen from table 4 that the eggs laid by the test group of laying hens completely satisfy the safety index, and the eggs laid by the control group of laying hens exceed the standard in three items of DDT (DDT), oxytetracycline and melamine.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.