Feed for fattening beef cattle as well as preparation method and application of feed

Abstract

The invention discloses a beef cattle fattening feed as well as a preparation method and application thereof, belongs to the technical field of livestock feed, and provides the beef cattle fattening feed which is prepared from the following raw materials in parts by weight: 47-53 parts of corn straw, 30-42 parts of leymus chinensis, 28-35 parts of soybean meal, 8-10 parts of apple pomace, 5-10 parts of malt, 5-6.5 parts of sweet potato grass, 0.5-1.5 parts of a complex microbial inoculant and 1-3 parts of a premix. The preparation raw materials of the feed are selected, the ratio of the raw materials is adjusted, and the specific raw materials are subjected to ensiling treatment, so that the energy level and nutritional value of the feed are improved, the palatability of the feed is improved, the utilization rate of the feed is improved, and fattening of beef cattle is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of livestock feed, and in particular relates to a feed for fattening beef cattle and a preparation method and application thereof. Background Art

[0002] Unlike pigs and poultry, ruminants have a unique rumen structure that can digest and utilize straw feed resources. The “return of straw to the field” is an indispensable part of the agricultural and animal husbandry cycle. However, the characteristics of straw feed are low nutritional value, and the fiber structure will hinder the entry of rumen enzymes and other substances into plant cells, thereby reducing the digestibility of nutrients. Corn straw is a commonly used roughage in beef cattle fattening, but corn straw has a high cellulose content and severe lignification, and has a low digestibility and poor nutritional value when fed to beef cattle. In order to further improve the utilization rate of roughage, many scholars have begun to study the feed combination effect and processing technology, and improve the utilization rate of roughage through different proportions of refined roughage combination and microbial fermentation. According to the nutritional characteristics of different roughages, different proportions of combination and the synergistic effect between feeds can effectively increase the feed intake and digestion utilization of beef cattle, while microbial fermentation can degrade the fiber in the straw and other difficult-to-digest macromolecules, which is of great significance to improving the utilization value of roughage and the fattening effect of beef cattle.

[0003] In addition, affected by the impact of imported beef and other factors, the prices of live cattle and beef in my country have continued to decline in recent years, and the market competitiveness is obviously insufficient. The main reason is related to the high cost of raising beef cattle in my country. The fattening breeding cycle of beef cattle is relatively long, and a large amount of feed costs (accounting for more than 70% of the feeding costs) needs to be invested in the breeding and management process. Once the feed is not reasonably matched or the quality of the feed raw materials is poor, it will have a greater negative impact on the weight gain of beef cattle and the digestion and utilization of feed. Therefore, the development of low-cost feed raw materials, scientific optimization of feed formulas, and assembly of integrated feed fermentation technology are of great significance to reducing the cost of fattening beef cattle, improving fattening results and breeding benefits. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a feed for fattening beef cattle, a preparation method and an application thereof. By selecting raw materials for preparing the feed, adjusting the raw material ratio, and performing silage fermentation treatment on specific raw materials, the energy level and nutritional value of the feed are improved, and while increasing its palatability, the utilization rate of the feed is improved, thereby promoting the fattening of beef cattle.

[0005] To achieve the above object, the present invention provides a feed for fattening beef cattle, which is prepared by the following raw materials in parts by weight:

[0006] 47-53 parts of corn straw, 30-42 parts of sheep fescue, 28-35 parts of soybean meal, 8-10 parts of apple pomace, 5-10 parts of malt, 5-6.5 parts of Vicia fragrans, 0.5-1.5 parts of compound bacterial agent, and 1-3 parts of premix.

[0007] Preferably, the composite bacterial agent comprises Bacillus pumilus and / or Lactobacillus plantarum, and the mass ratio of Bacillus pumilus to Lactobacillus plantarum in the composite bacterial agent is 1:2-3.

[0008] Further preferably, the Bacillus pumilus is Bacillus pumilus CICC 21742, and the effective viable count of the Bacillus pumilus is 1×10 9 ~2×10 9 CFU / g, the plant lactobacillus is plant lactobacillus CICC 21794, and the effective viable count of the plant lactobacillus is 1×10 10 ~2×10 10 CFU / g.

[0009] Preferably, the premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0010] The present invention also provides a method for preparing the feed, comprising the following steps:

[0011] (1) corn stalks, sheep fescue, apple pomace and scutellaria baicalensis are mixed and chopped to obtain a primary mixture;

[0012] (2) mixing the composite bacterial agent with the primary mixture obtained in step (1), compacting, sealing and fermenting to obtain a primary mixture for silage;

[0013] (3) Mixing the soybean meal, malt, premix and the silage premix obtained in step (2) to obtain feed.

[0014] Preferably, the length of the chopped pieces in step (1) is 1 to 2 cm.

[0015] Preferably, the water content of the initial mixture in step (1) is adjusted to 65-70%.

[0016] Preferably, the temperature of the sealed fermentation in step (2) is 25-30° C., and the time of the sealed fermentation is 30-45 days.

[0017] The invention also provides application of the feed in fattening beef cattle.

[0018] The invention also provides application of the feed in the late fattening stage of beef cattle.

[0019] Leymus chinensis: Rich in nutrients, including protein, crude fiber, minerals and vitamins, it can provide cattle with comprehensive nutrition and promote their growth, development and health. The stems and leaves of leymus chinensis are soft, palatable, easy to chew and digest, and suitable for the digestive system of cattle. The crude protein content of leymus chinensis can reach more than 11% during the flowering period, and can still be maintained at around 10% after being prepared into green hay.

[0020] Malt: sweet and neutral in nature. It enters the spleen and stomach meridians. Efficacy: promotes qi and digestion, strengthens the spleen and stimulates appetite, and relieves bloating. Indications: used for indigestion, abdominal distension and pain, spleen deficiency and poor appetite, milk stagnation, breast distension and pain, weaning in women, liver depression and flank pain, liver and stomach qi pain. It has high nutritional value as feed and can improve the palatability of feed.

[0021] Apple pomace: generally refers to the by-product residue produced after apples are used to produce jam, wine and apple juice. It contains rich nutritional components, amino acids, polysaccharides, dietary fiber, minerals, etc., and has high feeding value.

[0022] Vicia glabra is rich in protein and minerals, has good palatability, and is suitable for all kinds of livestock. It can be used as silage, which can prolong the storage time and improve the nutritional value and palatability of the feed.

[0023] Lactobacillus plantarum is the most common lactic acid bacteria for silage fermentation. Adding it to silage can improve the quality and digestibility of feed, increase the nutritional intake and growth performance of animals. In addition, Lactobacillus plantarum has antioxidant activity and can improve the antioxidant capacity of silage, such as increasing the content of α-tocopherol and β-carotene, thereby improving the nutritional value and shelf life of feed.

[0024] Bacillus pumilus can decompose microorganisms in the animal body and inhibit the growth and reproduction of pathogens. Bacillus pumilus can produce a variety of digestive enzymes in the animal intestines to help break down proteins, fats and carbohydrates in food and promote animal digestion and absorption.

[0025] Compared with the prior art, the present invention has the following advantages and technical effects:

[0026] The present invention selects corn stalks, sheep grass, soybean meal, apple pomace, malt and glaucous purple flower vetch as raw materials for feed. Corn stalks contain high cellulose and can provide sufficient crude fiber; sheep grass is rich in protein, minerals and vitamins; apple pomace contains a certain amount of sugar and organic acid, which helps to promote lactic acid bacteria fermentation; glaucous purple flower vetch has a high protein content and can provide rich nutrition for livestock. Glaucous purple flower vetch is added to replace part of soybean meal as a protein feed raw material; corn stalks, sheep grass, apple pomace and glaucous purple flower vetch are selected as silage raw materials for silage treatment. The natural pectin substances and sugar components in the apple pomace help to improve the silage environment and inhibit the growth of harmful microorganisms, thereby improving the quality of silage feed. Reasonable raw material ratio and selection of silage raw materials improve the impact value of feed, which can make the nutritional value of the final product more balanced and better palatable, and is conducive to the healthy growth of livestock.

[0027] The present invention utilizes bacillus pumilus and lactobacillus plantarum for silage, and the metabolites such as organic acids produced by lactobacillus plantarum during the fermentation process can improve the flavor of silage, enhance palatability and digestibility. Bacillus pumilus has strong stress resistance and broad-spectrum antibacterial activity, can effectively resist the invasion of bacteria brought by external pollution sources in the early stage of silage, prevent the occurrence of mildew and corruption, and ensure the safety and sanitary quality of silage. Bacillus pumilus can reproduce rapidly and produce antibacterial substances in the early stage, inhibit the development of harmful bacteria, create favorable conditions for subsequent lactobacillus plantarum, and lactobacillus plantarum can accelerate the silage fermentation process, and the synergistic effect of the two helps to better protect the nutrients in the raw materials, reduce dry matter loss, and by optimizing the fermentation environment, make silage have more stable quality and longer shelf life. In summary, bacillus pumilus and lactobacillus plantarum are jointly applied in silage production, which can not only improve the silage effect, but also ensure the nutritional value and safety of the final product. The present invention also utilizes the enzyme-producing characteristics of Bacillus pumilus to further decompose the nutrients in the silage raw materials into small molecules, thereby improving the absorption and utilization rate of the feed; at the same time, malt is added to improve the appetite of beef cattle and promote their digestion and absorption of feed. The feed of the present invention improves the nutrient content and energy level of beef cattle feed, while improving the utilization rate and absorption effect of beef cattle on feed, thereby successfully promoting the fattening of beef cattle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1These are the measurements of body size traits of beef cattle in the control group and experimental groups 1 to 3. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0031] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0032] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0033] Without departing from the scope or spirit of the present invention, various modifications and variations may be made to the specific embodiments of the present invention description, which will be apparent to those skilled in the art. Other embodiments obtained from the present invention description will be apparent to those skilled in the art. The present invention description and examples are merely exemplary. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art, and the raw materials used are all commercially available commodities.

[0034] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0035] Unless otherwise specified, the "parts" described in the present invention are all based on mass parts.

[0036] Example 1

[0037] The compound bacterial agent is Bacillus pumilus CICC 21742 (the effective viable count is 2×10 9 CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 1.5×10 10 CFU / g) were mixed in a mass ratio of 1:2.

[0038] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0039] (1) 50 parts of corn stalks, 30 parts of chinensis, 9 parts of apple pomace and 5.5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 2 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0040] (2) mixing 1 part of the composite bacterial agent with the primary mixture, compacting, and sealing and fermenting for 45 days in an environment with a temperature range of 25 to 30° C. to obtain a primary silage mixture;

[0041] (3) 32 parts of soybean meal, 7.5 parts of malt, 2 parts of premix and silage premix are mixed to obtain feed.

[0042] Example 2

[0043] The compound bacterial agent is Bacillus pumilus CICC 21742 (the effective viable count is 1×10 9 CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 1×10 10 CFU / g) were mixed in a mass ratio of 1:2.5.

[0044] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0045] (1) 47 parts of corn stalks, 35 parts of chinensis, 8 parts of apple pomace and 5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 1 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0046] (2) mixing 0.5 parts of the composite bacterial agent with the primary mixture, compacting the mixture, and sealing and fermenting the mixture at a temperature of 25 to 30° C. for 30 days to obtain a primary silage mixture;

[0047] (3) 28 parts of soybean meal, 5 parts of malt, 1 part of premix and silage premix are mixed to obtain feed.

[0048] Example 3

[0049] The compound bacterial agent is Bacillus pumilus CICC 21742 (the effective viable count is 2×10 9CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 2×10 10 CFU / g) were mixed in a mass ratio of 1:3.

[0050] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0051] (1) 53 parts of corn stalks, 42 parts of chinensis, 10 parts of apple pomace and 6.5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 2 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0052] (2) mixing 1.5 parts of the composite bacterial agent with the primary mixture, compacting the mixture, and sealing and fermenting the mixture at a temperature of 25 to 30° C. for 45 days to obtain a primary silage mixture;

[0053] (3) 35 parts of soybean meal, 10 parts of malt, 3 parts of premix and silage premix are mixed to obtain feed.

[0054] Example 4

[0055] The compound bacterial agent is Bacillus pumilus CICC 21742 (the effective viable count is 1.5×10 9 CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 1×10 10 CFU / g) were mixed in a mass ratio of 1:2.

[0056] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0057] (1) 48 parts of corn stalks, 40 parts of chinensis, 8 parts of apple pomace and 5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 2 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0058] (2) mixing 1 part of the composite bacterial agent with the primary mixture, compacting the mixture, and sealing and fermenting the mixture at a temperature of 25 to 30° C. for 35 days to obtain a primary silage mixture;

[0059] (3) 28 parts of soybean meal, 6 parts of malt, 2 parts of premix and silage premix are mixed to obtain feed.

[0060] Example 5

[0061] The compound bacterial agent is Bacillus pumilus CICC 21742 (the effective viable count is 2×10 9 CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 1×10 10 CFU / g) were mixed in a mass ratio of 1:3.

[0062] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0063] (1) 52 parts of corn stalks, 36 parts of chinensis, 9 parts of apple pomace and 6.5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 1 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0064] (2) mixing 1 part of the composite bacterial agent with the primary mixture, compacting the mixture, and sealing and fermenting the mixture at a temperature of 25 to 30° C. for 40 days to obtain a primary silage mixture;

[0065] (3) 35 parts of soybean meal, 8 parts of malt, 2 parts of premix and silage premix are mixed to obtain feed.

[0066] Comparative Example 1

[0067] The composite microbial agent is Bacillus subtilis subsp. subtilis CICC20872 (effective viable count is 2×10 9 CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 1.5×10 10 CFU / g) were mixed in a mass ratio of 1:2.

[0068] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0069] (1) 50 parts of corn stalks, 30 parts of chinensis, 9 parts of apple pomace and 5.5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 2 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0070] (2) mixing 1 part of the composite bacterial agent with the primary mixture, compacting, and sealing and fermenting for 45 days in an environment with a temperature range of 25 to 30° C. to obtain a primary silage mixture;

[0071] (3) 32 parts of soybean meal, 7.5 parts of malt, 2 parts of premix and silage premix are mixed to obtain feed.

[0072] Comparative Example 2

[0073] The compound bacterial agent is Bacillus pumilus CICC 21742 (the effective viable count is 2×10 9 CFU / g) and Lactobacillus plantarum CICC 21794 (effective viable count was 1.5×10 10 CFU / g) were mixed in a mass ratio of 1:2.

[0074] The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

[0075] (1) 50 parts of corn stalks, 30 parts of chinensis, 9 parts of potato residues and 5.5 parts of scutellaria baicalensis are mixed and chopped into pieces with a length of 2 cm to obtain a primary mixture, and the water content of the primary mixture is adjusted to between 65% and 70% to provide silage conditions;

[0076] (2) mixing 1 part of the composite bacterial agent with the primary mixture, compacting, and sealing and fermenting for 45 days in an environment with a temperature range of 25 to 30° C. to obtain a primary silage mixture;

[0077] (3) 32 parts of soybean meal, 7.5 parts of malt, 2 parts of premix and silage premix are mixed to obtain feed.

[0078] Experimental Example 1

[0079] 1. Test methods

[0080] The experiment selected 44 Angus bulls weighing 380±25kg and divided them into 4 groups, each with 11 bulls. The control group was fed with a commercial diet, the experimental group 1 was fed with the feed prepared in Example 1, the experimental group 2 was fed with the feed prepared in Comparative Example 1, and the experimental group 3 was fed with the feed prepared in Comparative Example 2. The corresponding groups were first fed with the corresponding feed for 7 days, and the test period for the formal start of the experiment was 90 days. The experimental bulls were subjected to normal immunization and deworming treatment.

[0081] The formula of commercially available daily diet (calculated by mass percentage): 50.15% corn, 16.63% alfalfa meal, 8.31% barley, 5.82% cottonseed meal, 4.99% corn husk, 4.16% soybean meal, 4.16% rapeseed meal, 4.16% premix, 0.83% calcium hydrogen phosphate, 0.54% urea, and 0.25% baking soda.

[0082] 2. Determination of production performance indicators

[0083] The fed feed and remaining feed were weighed and recorded daily to calculate the animal's feed intake. The beef cattle were weighed on an empty stomach at the beginning and end of the formal experiment in the early morning to calculate their average daily feed intake, daily weight gain and feed-to-weight ratio.

[0084] Average daily feed intake = total feed consumption / (number of cattle*number of test days);

[0085] Average daily weight gain = (average end-of-test weight - average pre-test weight) / number of test days;

[0086] Feed-to-weight ratio = average daily feed intake / average daily weight gain.

[0087] Table 1 Production performance index measurement results

[0088]

[0089] As can be seen from Table 1, compared with the control group fed with commercially available diets, the experimental group 1 fed with the feed prepared by Example 1 of the present invention can significantly increase the weight of the experimental cattle, increase the yield of beef cattle, and improve the utilization rate of the feed; compared with the control group, the experimental group 2 fed with the feed prepared by Comparative Example 1 of the present invention can increase the daily feed intake of the experimental cattle, but the different silage methods affect the decomposition of the nutritional value in the feed and the utilization rate of the feed; compared with the control group, the daily feed intake of the experimental cattle in the experimental group 3 fed with the feed prepared by Comparative Example 2 of the present invention is not increased, which proves that the selection of apple pomace raw materials can improve the palatability of the feed.

[0090] 3. Determination of body size traits of beef cattle

[0091] After the test period, the beef cattle were fasted for 12 hours and measured on an empty stomach. The cattle stood on a flat ground. When standing, the hind legs covered the front legs when viewed from the back, and the left legs covered the right legs when viewed from the side. The four legs were in two rows in a straight line, the head was naturally straight, and the back of the skull and the withers were on the same horizontal plane. The height, length, tube circumference, and chest circumference were measured with reference to "Cattle Production".

[0092] Table 2 Results of measurement of body size traits of beef cattle

[0093]

[0094]

[0095] As shown in Table 2 and Figure 1 As shown, the feed prepared in Example 1 of the present invention can significantly increase the height, body length and chest circumference of beef cattle compared with the diet of the control group.

[0096] In summary, the feed prepared by the present invention can increase the weight and meat yield of beef cattle, promote their growth and development, and significantly increase their body height and length when fed to beef cattle.

[0097] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A feed for fattening beef cattle, characterized in that: The method is prepared by comprising the following raw materials in parts by weight: 47-53 parts of corn straw, 30-42 parts of sheep fescue, 28-35 parts of soybean meal, 8-10 parts of apple pomace, 5-10 parts of malt, 5-6.5 parts of Vicia fragrans, 0.5-1.5 parts of compound bacterial agent, and 1-3 parts of premix.

2. The feed according to claim 1, characterized in that: The composite bacterial agent comprises Bacillus pumilus and / or Lactobacillus plantarum, and the mass ratio of Bacillus pumilus to Lactobacillus plantarum in the composite bacterial agent is 1:2-3.

3. The feed according to claim 2, characterized in that: The Bacillus pumilus is Bacillus pumilus CICC21742, and the effective viable count of the Bacillus pumilus is 1×10 9 ~2×10 9 CFU / g, the plant lactobacillus is plant lactobacillus CICC 21794, and the effective viable count of the plant lactobacillus is 1×10 10 ~2×10 10 CFU / g.

4. The feed according to claim 1, characterized in that: The premix is ​​prepared by mixing 5000 IU of vitamin A, 6000 IU of vitamin D, 5000 mg of vitamin E, 15 mg of copper, 100 mg of iron, 60 mg of zinc, 100 mg of manganese, 0.7 mg of selenium, 2.0 mg of iodine and 0.9 mg of cobalt.

5. The method for preparing a feed according to any one of claims 1 to 4, characterized in that: The following steps are involved: (1) corn stalks, sheep fescue, apple pomace and scutellaria baicalensis are mixed and chopped to obtain a primary mixture; (2) mixing the composite bacterial agent with the primary mixture obtained in step (1), compacting, sealing and fermenting to obtain a primary mixture for silage; (3) Mixing the soybean meal, malt, premix and the silage premix obtained in step (2) to obtain feed.

6. The preparation method according to claim 5, characterized in that: The length of the chopped pieces in step (1) is 1 to 2 cm.

7. The preparation method according to claim 5, characterized in that: The water content of the initial mixture in step (1) is adjusted to 65-70%.

8. The preparation method according to claim 5, characterized in that: The temperature of the sealed fermentation in step (2) is 25-30° C., and the time of the sealed fermentation is 30-45 days.

9. Use of the feed according to any one of claims 1 to 4 or the feed prepared by the preparation method according to any one of claims 5 to 8 in fattening beef cattle.

10. Use of the feed according to any one of claims 1 to 4 or the feed prepared by the preparation method according to any one of claims 5 to 8 in the late fattening of beef cattle.

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