Yellow feather broiler compound feed and preparation method thereof

Abstract

The invention belongs to the technical field of animal feeds, and discloses a yellow feather broiler compound feed and a preparation method thereof. The feed formula is optimized, the cottonseed meal, the sunflower meal, the pepper meal and other raw materials are reasonably proportioned, the content of crude fibers reaches 4.2% or above, the raw materials stimulate muscular stomach development and are compounded to reinforce the compound enzyme preparation, the digestibility is effectively improved, the stomach weight and the muscular stomach index of chickens are increased on the premise that the survival rate, the slaughtering weight and other indexes are guaranteed, and the chicken quality is improved. And the digestion and utilization capability of the feed is further improved. In addition, the yellow feather broiler compound feed disclosed by the invention is lower in cost and has a relatively high application value.

Description

Technical Field

[0001] The invention belongs to the technical field of animal feeds and relates to a yellow-feathered broiler compound feed and a preparation method thereof. Background Art

[0002] The yellow-feathered broiler breed is mainly fast-growing and large (70-75 days old, with a market weight of more than 3.0 kg), and this breed of yellow-feathered broiler grows fast. In recent years, feed nutrition technology has developed rapidly, which has continuously reduced the feed-to-meat ratio in breeding, but the excessively fast growth rate leads to insufficient development of the gizzard, which is small in weight and volume, affecting the digestion and utilization of feed during the growth and fattening periods. In addition, because consumers have the habit of consuming gizzards (chicken gizzards), gizzards (chicken gizzards) are high-value-added products in chicken cuts, and the terminal selling price is much higher than the chicken itself. Therefore, how to further increase the weight of the gizzard of yellow-feathered chickens has become a technical problem that needs to be solved in the breeding process of yellow-feathered chickens. Summary of the invention

[0003] In order to further increase the weight of gizzard, improve the feed digestion and utilization ability of yellow-feathered broilers during the growth and fattening periods, and improve the economic benefit of gizzard, the present invention provides a compound feed for yellow-feathered broilers and a preparation method thereof.

[0004] Firstly, the present invention provides a compound feed for yellow-feathered broilers. The components of the compound feed for yellow-feathered broilers include, by weight, 490-530 parts of corn, 180-220 parts of wheat, 90-110 parts of cottonseed meal, 40-60 parts of corn protein powder, 40-60 parts of sunflower meal, 25-35 parts of cottonseed oil, 15-25 parts of chili meal, 10-15 parts of granular stone powder, 8-12 parts of premix, 4-7 parts of lysine, 3-5 parts of calcium hydrogen phosphate, 1-3 parts of salt, 1-1.5 parts of threonine, 1-1.5 parts of methionine, 1-1.5 parts of isoleucine, 0.5-1.5 parts of choline, and 0.5-1.5 parts of an enhanced complex enzyme preparation; the components of the premix include, by weight percentage, 20% of a trace element premix, 10% of a vitamin premix, 5% of a microbial premix, 5% of a phytase, and 60% of a rice husk carrier.

[0005] Furthermore, the components of the trace element premix are as follows: by mass percentage, iron 3%, zinc 4%, copper 0.4%, manganese 5%, selenium 0.02%, iodine 0.04%, and zeolite powder 87.54%. The components of the vitamin premix are as follows: by mass percentage, vitamin A 0.93%, vitamin D3 0.03%, vitamin E 13.4%, vitamin B1 1.0%, vitamin B2 2.6%, vitamin B6 1.9%, niacin 20.0%, pantothenic acid 5.0%, folic acid 0.5%, biotin 0.03%, and rice bran 54.61%. The components of the microbial premix are as follows: by mass percentage, Clostridium butyricum agent 10%, Lactobacillus acidophilus agent 5%, Bacillus subtilis agent 3%, and rice bran carrier 82%; the viable count of the Clostridium butyricum agent ≥ 3.0×10 8 CFU / g, the viable count of the Lactobacillus acidophilus agent ≥ 1.0×10 8 CFU / g, the viable count of the Bacillus subtilis agent ≥ 5.0×10 9 CFU / g; the enzyme activity of the phytase ≥ 1.0×10 4 U / g.

[0006] Furthermore, the components of the enhanced compound enzyme preparation are as follows: by mass percentage, compound protease preparation 10%, α-galactosidase preparation 20%, pectinase preparation 30%, non-starch polysaccharide enzyme preparation 20%, and rice bran carrier 20%. In the compound protease preparation, by mass percentage, acidic protease preparation 20%, neutral protease preparation 10%, alkaline protease preparation 20%, and rice bran carrier 50%; the enzyme activity of the acidic protease preparation ≥ 1×10 4 U / g, the enzyme activity of the neutral protease preparation ≥ 5×10 3 U / g, the enzyme activity of the alkaline protease preparation ≥ 1×10 4 U / g. The enzyme activity of the α-galactosidase preparation ≥ 5×10 2 U / g, the enzyme activity of the pectinase preparation

[0007] ≥ 6×10 4 U / g. The components of the non-starch polysaccharide enzyme preparation are as follows: by mass percentage, xylanase preparation 50%, β-glucanase preparation 15%, β-mannanase preparation 20%, and cellulase preparation 15%; the enzyme activity of the xylanase preparation ≥ 3×10 4 U / g, the enzyme activity of the β-glucanase preparation ≥ 2×10 3 U / g, the enzyme activity of the β-mannanase preparation ≥ 6×10 3 U / g, the enzyme activity of the cellulase preparation ≥ 8×10 2 U / g.

[0008] Furthermore, the crude fiber content of the formulated feed for yellow - feather broilers ≥ 4.2%.

[0009] Further, the corn bulk density ≥ 720 g, and it is crushed using an 8.0 mm round-hole sieve.

[0010] Further, the crude protein content of the cottonseed meal ≥ 50%, and the crude fiber content is 6 - 8%.

[0011] Further, the crude protein content of the sunflower meal ≥ 25%, and the crude fiber content is 22 - 26%.

[0012] Further, the particle size of the granular limestone powder is 2 - 3 mm.

[0013] On the other hand, the present invention also provides a method for preparing the above-mentioned formulated feed for yellow - feather broilers, including:

[0014] 1) Corn pretreatment: Select corn with a bulk density ≥ 720 g, crush it using an 8.0 mm round - hole sieve, and after crushing, the corn passes through an 8 - mesh vibrating sieve to screen out small particles and powdery corn, and the remaining large - particle corn is reserved for use.

[0015] 2) Sunflower meal pretreatment: Select sunflower meal with a crude protein ≥ 25% and a crude fiber content of 22 - 26%, crush it using a 3.0 mm round - hole sieve, and reserve it for use.

[0016] 3) Chili meal pretreatment: Crush it using a 3.0 mm aperture sieve, and reserve it for use.

[0017] 4) Prepare the premix: According to the raw material ratio, fully mix the trace element premix, vitamin premix, microbial premix, phytase and rice hull carrier to obtain the premix, and reserve it for use.

[0018] 5) Prepare the enhanced compound enzyme preparation: According to the raw material ratio, fully mix the compound protease preparation, α - galactosidase preparation, pectinase preparation, non - starch polysaccharide enzyme preparation and rice hull carrier to obtain the enhanced compound enzyme preparation, and reserve it for use.

[0019] 6) Fully mix the pretreated corn, sunflower meal, chili meal, and the prepared premix, enhanced compound enzyme preparation with cottonseed meal, corn gluten meal, cottonseed oil, granular limestone powder, lysine, calcium hydrogen phosphate, salt, threonine, methionine, isoleucine, choline evenly, steam - condition it to 80 - 90 °C for granulation with a particle size of 4.0 mm, and after cooling, obtain the semi - finished formulated feed for yellow - feather broilers, and finally add wheat and mix evenly to obtain the finished formulated feed for yellow - feather broilers.

[0020] Compared with the prior art, the formulated feed for yellow - feather broilers provided by the present invention has the following beneficial effects or advantages.

[0021] Through the optimization of the feed formula, the raw materials such as cottonseed meal, sunflower meal, and chili meal are rationally proportioned, and the crude fiber content reaches more than 4.2%. The development of the gizzard is stimulated by the raw materials, and at the same time, it is compounded with premix, enhanced compound enzyme preparation, etc., effectively improving the digestibility. On the premise of ensuring indicators such as survival rate and slaughter weight, the weight of the chicken gizzard and the gizzard index are increased, and then the digestive and utilization ability of the feed during the growth period and fattening period of yellow - feather broilers is improved. Specifically, the gizzard weight of the experimental group increased by 7.69 g compared with the control group, and the gizzard index increased by 2.57 g / kg. In addition, the compound feed for yellow - feather broilers of the present invention has a lower cost and has high application value. Detailed implementation manners

[0022] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0023] In the following embodiments, the test methods and detection methods are conventional methods unless otherwise specified; the test materials used can be obtained from the market unless otherwise specified.

[0024] Embodiment 1

[0025] This embodiment provides the preparation of the compound feed for yellow - feather broilers.

[0026] 1) Corn pretreatment: Select corn with a bulk density ≥ 720 g, crush it with an 8.0 - mm round - hole sieve, and after crushing, the corn passes through an 8 - mesh vibrating sieve to screen out small particles and powdery corn, and the remaining large - particle corn is reserved for use.

[0027] 2) Sunflower meal pretreatment: Select sunflower meal with a crude protein content ≥ 25% and a crude fiber content of 22 - 26%, and crush it with a 3.0 - mm round - hole sieve for use.

[0028] 3) Chili meal pretreatment: Crush it with a 3.0 - mm aperture sieve for use.

[0029] 4) Preparation of premix: Thoroughly mix 1.6 kg (20%) trace element premix, 0.8 kg (10%) vitamin premix, 0.4 kg (5%) microbial premix, 0.4 kg (5%) phytase with 4.8 kg (60%) rice husk to obtain 8 kg of premix for use.

[0030] In the above step 4), the components of the trace element premix are: by mass percentage, 3% iron, 4% zinc, 0.4% copper, 5% manganese, 0.02% selenium, 0.04% iodine, and 87.54% zeolite powder; the components of the vitamin premix are: by mass percentage, 0.93% vitamin A, 0.03% vitamin D, 13.4% vitamin E, 11.0% vitamin B1, 2.6% vitamin B2, 1.9% vitamin B6, 20.0% niacin, 5.0% pantothenic acid, 0.5% folic acid, 0.03% biotin, and 54.61% rice husk; the components of the microbial premix are: by mass percentage, 10% Clostridium butyricum agent, 5% Lactobacillus acidophilus agent, 3% Bacillus subtilis agent, and 82% rice husk carrier; the viable count of Clostridium butyricum agent is ≥3.0×10 8 CFU / g, the number of viable bacteria of Lactobacillus acidophilus agent ≥1.0×10 8 CFU / g, viable count of Bacillus subtilis agent ≥5.0×10 9 CFU / g; the enzyme activity of the phytase is ≥1.0×10 4 U / g.

[0031] 5) Preparation of enhanced composite enzyme preparation: 0.05 kg (10%) composite protease preparation, 0.1 kg (20%) α-galactosidase preparation, 0.15 kg (30%) pectinase preparation, 0.1 kg (20%) non-starch polysaccharide enzyme preparation and 0.1 kg (20%) rice husk carrier were fully mixed to obtain 0.5 kg enhanced composite enzyme preparation for standby use.

[0032] In the above step 5), the composite protease preparation comprises, by mass percentage, 20% of acidic protease preparation, 10% of neutral protease preparation, 20% of alkaline protease preparation, and 50% of rice husk carrier; the enzyme activity of the acidic protease preparation is ≥1×10 4 U / g, the enzyme activity of neutral protease preparation is ≥5×10 3 U / g, the enzyme activity of alkaline protease preparation is ≥1×10 4 U / g; the enzyme activity of α-galactosidase preparation is ≥5×10 2 U / g, the enzyme activity of pectinase preparation is ≥6×10 4 U / g; the components of the non-starch polysaccharide enzyme preparation are: by mass percentage, 50% xylanase preparation, 15% β-glucanase preparation, 20% β-mannanase preparation, and 15% cellulase preparation; the enzyme activity of the xylanase preparation is ≥3×10 4 U / g, enzyme activity of β-glucanase preparation ≥2×10 3 U / g, enzyme activity of β-mannanase preparation ≥6×10 3 U / g, cellulase activity ≥8×102 U / g.

[0033] 6) Mix 490 kg of pre-treated corn, 40 kg of sunflower meal, 15 kg of chili meal, and 8 kg of the prepared premix with 0.5 kg of enhanced compound enzyme preparation, 90 kg of cottonseed meal, 40 kg of corn gluten meal, 25 kg of cottonseed oil, 10 kg of granular limestone powder, 4 kg of lysine, 3 kg of calcium hydrogen phosphate, 1 kg of salt, 1 kg of threonine, 1 kg of methionine, 1 kg of isoleucine, and 0.5 kg of choline thoroughly. Modulate with steam to 80 °C for pelleting, with a particle size of 4.0 mm. After cooling, obtain the semi-finished formulated feed for yellow-feathered broilers. Finally, add 180 kg of wheat and mix evenly to obtain the finished formulated feed for yellow-feathered broilers.

[0034] Example 2

[0035] This example provides the preparation of the formulated feed for yellow-feathered broilers.

[0036] 1) Corn pretreatment: The same as in Example 1.

[0037] 2) Sunflower meal pretreatment: The same as in Example 1.

[0038] 3) Chili meal pretreatment: The same as in Example 1.

[0039] 4) Prepare the premix: Thoroughly mix 2 kg (20%) of trace element premix, 1 kg (10%) of vitamin premix, 0.5 kg (5%) of microbial premix, 0.5 kg (5%) of phytase with 6 kg (60%) of rice hull carrier to obtain 10 kg of premix for standby. The trace element premix, vitamin premix, and microbial premix used are the same as in Example 1, and the enzyme activity of the phytase is the same as in Example 1.

[0040] 5) Prepare the enhanced compound enzyme preparation: Thoroughly mix 0.1 kg (10%) of compound protease preparation, 0.2 kg (20%) of α-galactosidase preparation, 0.3 kg (30%) of pectinase preparation, 0.2 kg (20%) of non-starch polysaccharide enzyme preparation with 0.2 kg (20%) of rice hull carrier to obtain 1.0 kg of enhanced compound enzyme preparation for standby. The components and enzyme activities of the compound protease preparation and non-starch polysaccharide enzyme preparation are the same as in Example 1, and the enzyme activities of the α-galactosidase preparation and pectinase preparation are the same as in Example 1.

[0041] 6) Mix 508 kg of pre-treated corn, 50 kg of sunflower meal, 20 kg of chili meal, and 10 kg of the prepared premix with 1 kg of enhanced compound enzyme preparation, 99 kg of cottonseed meal, 50 kg of corn gluten meal, 32 kg of cottonseed oil, 13.7 kg of granular limestone powder, 5.5 kg of lysine, 4.1 kg of monocalcium phosphate, 2 kg of salt, 1.3 kg of threonine, 1.2 kg of methionine, 1.2 kg of isoleucine, and 1 kg of choline thoroughly. Modulate with steam to 90 °C and pelletize with a particle size of 4.0 mm. After cooling, obtain the semi-finished formulated feed for yellow-feathered broilers. Finally, add 200 kg of wheat and mix evenly to obtain the finished formulated feed for yellow-feathered broilers.

[0042] Example 3

[0043] This example provides the preparation of the formulated feed for yellow-feathered broilers.

[0044] 1) Corn pretreatment: The same as in Example 1.

[0045] 2) Sunflower meal pretreatment: The same as in Example 1.

[0046] 3) Chili meal pretreatment: The same as in Example 1.

[0047] 4) Prepare the premix: Thoroughly mix 2.4 kg (20%) of trace element premix, 1.2 kg (10%) of vitamin premix, 0.6 kg (5%) of microbial premix, 0.6 kg (5%) of phytase with 7.2 kg (60%) of rice hull carrier to obtain 12 kg of premix for standby. The trace element premix, vitamin premix, and microbial premix used are the same as in Example 1, and the enzyme activity of the phytase is the same as in Example 1.

[0048] 5) Prepare the enhanced compound enzyme preparation: Thoroughly mix 0.12 kg (10%) of compound protease preparation, 0.24 kg (20%) of α-galactosidase preparation, 0.36 kg (30%) of pectinase preparation, 0.24 kg (20%) of non-starch polysaccharide enzyme preparation with 0.24 kg (20%) of rice hull carrier to obtain 1.2 kg of enhanced compound enzyme preparation for standby. The components and enzyme activities of the compound protease preparation and non-starch polysaccharide enzyme preparation are the same as in Example 1, and the enzyme activities of the α-galactosidase preparation and pectinase preparation are the same as in Example 1.

[0049] 6) Mix 520 kg of pre-treated corn, 55 kg of sunflower meal, 22 kg of chili meal, and 11 kg of premix thoroughly with 1.2 kg of enhanced compound enzyme preparation, 105 kg of cottonseed meal, 55 kg of corn gluten meal, 34 kg of cottonseed oil, 14.3 kg of granular limestone powder, 6.2 kg of lysine, 4.5 kg of calcium hydrogen phosphate, 2.5 kg of salt, 1.4 kg of threonine, 1.4 kg of methionine, 1.4 kg of isoleucine, and 1.2 kg of choline. Modulate with steam to 85 °C and pelletize with a particle size of 4.0 mm. After cooling, obtain the semi-finished formulated feed for yellow-feathered broilers. Finally, add 210 kg of wheat and mix evenly to obtain the finished formulated feed for yellow-feathered broilers.

[0050] Example 4

[0051] This example provides the preparation of the formulated feed for yellow-feathered broilers.

[0052] 1) Corn pretreatment: The same as in Example 1.

[0053] 2) Sunflower meal pretreatment: The same as in Example 1.

[0054] 3) Chili meal pretreatment: The same as in Example 1.

[0055] 4) Prepare the premix: Thoroughly mix 2.4 kg (20%) of trace element premix, 1.2 kg (10%) of vitamin premix, 0.6 kg (5%) of microbial premix, 0.6 kg (5%) of phytase with 7.2 kg (60%) of rice hull carrier to obtain 12 kg of premix for standby. The trace element premix, vitamin premix, and microbial premix used are the same as in Example 1, and the enzyme activity of the phytase is the same as in Example 1.

[0056] 5) Prepare the enhanced compound enzyme preparation: Thoroughly mix 0.15 kg (10%) of compound protease preparation, 0.3 kg (20%) of α-galactosidase preparation, 0.45 kg (30%) of pectinase preparation, 0.3 kg (20%) of non-starch polysaccharide enzyme preparation with 0.3 kg (20%) of rice hull carrier to obtain 1.5 kg of enhanced compound enzyme preparation for standby. The components and enzyme activities of the compound protease preparation and non-starch polysaccharide enzyme preparation are the same as in Example 1, and the enzyme activities of the α-galactosidase preparation and pectinase preparation are the same as in Example 1.

[0057] 6) Mix 530 kg of pre-treated corn, 60 kg of sunflower meal, 25 kg of chili meal, and 12 kg of the prepared premix with 1.5 kg of fortified compound enzyme preparation, 110 kg of cottonseed meal, 60 kg of corn gluten meal, 35 kg of cottonseed oil, 15 kg of granular limestone powder, 7 kg of lysine, 5 kg of calcium hydrogen phosphate, 3 kg of salt, 1.5 kg of threonine, 1.5 kg of methionine, 1.5 kg of isoleucine, and 1.5 kg of choline thoroughly. Modulate with steam to 87 °C and pelletize with a particle size of 4.0 mm. After cooling, obtain the semi-finished yellow-feathered broiler compound feed. Finally, add 220 kg of wheat and mix evenly to obtain the finished yellow-feathered broiler compound feed.

[0058] Example 5

[0059] This example provides the feeding effects of the yellow-feathered broiler compound feed and the traditional corn-soybean meal diet.

[0060] Test time: April 2024 - August 2024.

[0061] Test location: Yellow-feathered broiler test farm of Xinjiang Taikun Group.

[0062] Test animals: Liangfenghua yellow-feathered broilers.

[0063] Diet design: The test group was fed the yellow-feathered broiler compound feed prepared in Example 2 (preferred example), and the control group was fed the corn-soybean meal diet (the feed formula is shown in Table 1).

[0064] Table 1. Feed formula

[0065]

[0066]

[0067] Note: In the feed formula used in the control group, the components of the fortified compound enzyme preparation 1 are: 0.1 kg of pectinase preparation, 0.2 kg of non-starch polysaccharide enzyme preparation, and 0.7 kg of rice hull carrier. The enzyme activity of the pectinase preparation and the components and enzyme activity of the non-starch polysaccharide enzyme preparation are the same as in Example 1.

[0068] Test method: The test animals used were 2880 healthy 1-day-old yellow-feathered broilers, raised in a three-dimensional cage system. A randomized block experimental design was adopted, with a total of 2 treatment groups, namely the control group and the test group, with 6 replicates in each treatment and 240 birds in each replicate.

[0069] Index determination: Survival rate, average weight at slaughter, feed-to-meat ratio, gizzard weight, gizzard index.

[0070] Data statistics: The experimental data were sorted using Excel 2010.

[0071] Data analysis: The experimental data were expressed as mean ± standard deviation. One-way analysis of variance was performed using SPASS software to test the significance of differences between groups. Duncan's method was used for multiple comparisons between groups. A P value < 0.05 was considered statistically significant.

[0072] Experimental results: See Table 2.

[0073] Table 2. Comparison of indexes between the experimental group and the control group

[0074] Index Experimental group Control group Slaughter weight (kg) 3.01 3.01 Survival rate (%) 94.13±1.32 94.63±1.56 Gizzard weight (g) 30.54±0.62 22.85±0.38 Gizzard index (g / kg) 10.16±0.32 7.60±0.26 Feed conversion ratio 2.39 2.4 Feed consumption per bird (kg) 7.19 7.22

[0075] Note: Gizzard index (g / kg) = gizzard weight (g) / slaughter weight (kg)

[0076] As can be seen from Table 2, the gizzard weight ratio of the experimental group increased by 7.69 g compared with the control group, and the gizzard index increased by 2.57 g / kg. This indicates that the formulated feed provided by the present invention can significantly promote the growth of the gizzard of yellow - feather broilers and improve the digestion and utilization ability of feed during the growth and fattening periods. In addition, the gizzard is a high - value - added product in chicken - cut products, and the increase in gizzard weight also improves economic benefits. Finally, the formulated feed for yellow - feather broilers of the present invention has a lower cost and high application value (see Table 1).

[0077] In summary, through the optimization of the feed formula, the present invention rationally proportioned raw materials such as cottonseed meal, sunflower meal, and pepper meal, with the crude fiber content reaching more than 4.2%. By stimulating the development of the gizzard with raw materials and compounding with premixes, enhanced complex enzyme preparations, etc., the digestibility was effectively improved. On the premise of ensuring indicators such as survival rate and slaughter weight, the gizzard weight and gizzard index of chickens were increased, thereby improving the digestion and utilization ability of feed during the growth and fattening periods of yellow - feather broilers. In addition, the formulated feed for yellow - feather broilers of the present invention has a lower cost and high application value.

[0078] The above - mentioned embodiments can preferably illustrate the technical solution of the present invention, but only describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various changes and improvements made by those of ordinary skill in the art to the technical solution of the present invention should fall within the protection scope determined by the present invention.

Claims

1. A yellow-feathered broiler feed, characterized in that: The components of the yellow-feathered broiler compound feed include: by weight, 490-530 parts of corn, 180-220 parts of wheat, 90-110 parts of cottonseed meal, 40-60 parts of corn gluten meal, 40-60 parts of sunflower meal, 25-35 parts of cottonseed oil, 15-25 parts of chili meal, 10-15 parts of granular stone powder, 8-12 parts of premix, 4-7 parts of lysine, 3-5 parts of calcium hydrogen phosphate, 1-3 parts of salt, 1-1.5 parts of threonine, 1-1.5 parts of methionine, 1-1.5 parts of isoleucine, 0.5-1.5 parts of choline, and 0.5-1.5 parts of enhanced complex enzyme preparation; The components of the premix are: by mass percentage, 20% of trace element premix, 10% of vitamin premix, 5% of microorganism premix, 5% of phytase and 60% of rice husk carrier.

2. The yellow-feathered broiler feed according to claim 1, characterized in that: The components of the trace element premix are: by mass percentage, 3% iron, 4% zinc, 0.4% copper, 5% manganese, 0.02% selenium, 0.04% iodine, and 87.54% zeolite powder; The components of the vitamin premix are: by mass percentage, vitamin A 0.93%, vitamin D 30.03%, vitamin E 13.4%, vitamin B1 1.0%, vitamin B2 2.6%, vitamin B6 1.9%, niacin 20.0%, pantothenic acid 5.0%, folic acid 0.5%, biotin 0.03%, rice husk 54.61%; The components of the microbial premix are: by mass percentage, 10% of Clostridium butyricum agent, 5% of Lactobacillus acidophilus agent, 3% of Bacillus subtilis agent, and 82% of rice husk carrier; the number of viable bacteria of Clostridium butyricum agent is ≥3.0×10 8 CFU / g, the number of viable bacteria of Lactobacillus acidophilus agent ≥1.0×10 8 CFU / g, viable count of Bacillus subtilis agent ≥5.0×10 9 CFU / g; The phytase activity is ≥1.0×10 4 U / g.

3. The yellow-feathered broiler feed according to claim 1, characterized in that: The components of the enhanced composite enzyme preparation are: by mass percentage, 10% of composite protease preparation, 20% of α-galactosidase preparation, 30% of pectinase preparation, 20% of non-starch polysaccharide enzyme preparation, and 20% of rice husk carrier; The composite protease preparation comprises, by mass percentage, 20% of acidic protease preparation, 10% of neutral protease preparation, 20% of alkaline protease preparation, and 50% of rice husk carrier; Enzyme activity of acid protease preparations ≥1×10 4 U / g, the enzyme activity of neutral protease preparation is ≥5×10 3 U / g, enzyme activity of alkaline protease preparation ≥1×10 4 U / g; The enzyme activity of α-galactosidase preparation is ≥5×10 2 U / g, the enzyme activity of pectinase preparation is ≥6×10 4 U / g; The components of the non-starch polysaccharide enzyme preparation are: by mass percentage, 50% of xylanase preparation, 15% of β-glucanase preparation, 20% of β-mannanase preparation, and 15% of cellulase preparation; the enzyme activity of the xylanase preparation is ≥3×10 4 U / g, enzyme activity of β-glucanase preparation ≥2×10 3 U / g, enzyme activity of β-mannanase preparation ≥6×10 3 U / g, cellulase activity ≥8×10 2 U / g.

4. The yellow-feathered broiler feed according to claim 1, characterized in that: The crude fiber content of the yellow-feathered broiler compound feed is ≥4.2%.

5. The yellow-feathered broiler compound feed according to claim 1, characterized in that: The corn has a bulk density of ≥720 g and is crushed using an 8.0 mm round hole sieve.

6. The yellow-feathered broiler compound feed according to claim 1, characterized in that: The crude protein content of the cottonseed meal is ≥50%, and the crude fiber content is 6-8%.

7. The yellow-feathered broiler compound feed according to claim 1, characterized in that: The crude protein content of the sunflower meal is ≥25%, and the crude fiber content is 22-26%.

8. The yellow-feathered broiler compound feed according to claim 1, characterized in that: The particle size of the granular stone powder is 2 to 3 mm.

9. The method for preparing the compound feed for yellow-feathered broiler chickens according to claim 1, characterized in that: include: 1) Corn pretreatment: Select corn with a bulk density of ≥720g, crush it using an 8.0mm round hole sieve, and pass the crushed corn through an 8-mesh vibrating sieve to remove small particles and powdered corn, leaving large particles of corn for later use; 2) Sunflower meal pretreatment: Select sunflower meal with a crude protein content of ≥25% and a crude fiber content of 22-26%, crush it with a 3.0 mm round hole sieve, and set aside; 3) Pretreatment of chili meal: crush it using a 3.0 mm aperture sieve and set aside; 4) Preparing a premix: according to the raw material ratio, the trace element premix, the vitamin premix, the microorganism premix, the phytase and the rice husk carrier are fully mixed to obtain a premix for standby use; 5) preparing a fortified composite enzyme preparation: fully mixing the composite protease preparation, α-galactosidase preparation, pectinase preparation, non-starch polysaccharide enzyme preparation and rice husk carrier according to the raw material ratio to obtain a fortified composite enzyme preparation for standby use; 6) The pretreated corn, sunflower meal, chili meal, the prepared premix, the fortified complex enzyme preparation, cottonseed meal, corn protein powder, cottonseed oil, granulated stone powder, lysine, calcium hydrogen phosphate, salt, threonine, methionine, isoleucine, and choline are fully and uniformly mixed, steam-adjusted to 80-90° C. for granulation, with a particle size of 4.0 mm, and cooled to obtain a semi-finished yellow-feathered broiler feed, and finally wheat is added and mixed uniformly to obtain a finished yellow-feathered broiler feed.

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