A feed specially used for Simmental beef cattle and preparation method thereof

Abstract

The invention discloses a feed specially used for Simmental beef cattle and a preparation method thereof, belonging to the field of livestock feed. In terms of weight, the feed provided by the invention contains: 5000-5530 parts of corn, 1300-1510 parts of soybean meal, 1000-1250 parts of bran, 100-150 parts of baking soda, 400-450 parts of premix, 1400-1600 parts of lees, 3-5 parts of Bacillus subtilis, 5-7 parts of Lactobacillus plantarum, 5-16 parts of licorice extract, and 10-15 parts of turmeric extract. The feed of the invention is used to feed Simmental cattle, improves the growth rate, feed intake, feed conversion rate and slaughter rate of Simmental cattle, and also optimizes the fat distribution and texture of beef, and solves the problems of decreased disease resistance, indigestion, insufficient feed intake and low feed utilization rate caused by the rapid growth and development of Simmental cattle.

Description

Technical Field

[0001] The invention belongs to the field of livestock feed and relates to a feed specially used for Simmental beef cattle and a preparation method thereof. Background Art

[0002] As a by-product of the brewing industry, distiller's grains are usually derived from carbohydrate-rich grain crops such as grains, corn, and sorghum. Distiller's grains usually contain nutrients such as protein, fat, cellulose, hemicellulose, and vitamins. The content of these nutrients is also different. For example, corn distiller's grains contain about 91.6% water, 2% protein, 4.3% nitrogen-free extract, 0.9% fat, 0.7% cellulose, and 0.5% ash. Although it has gone through the brewing process, the protein content in distiller's grains is generally higher than that in the raw materials, because the brewing process is mainly through yeast fermentation, and after the brewing process is over, the yeast will remain in the distiller's grains and form a certain amount of bacterial protein, that is, every 100kg of distiller's grains contains 1.1kg of protein, while carbohydrates such as sugar and starch are greatly reduced.

[0003] Distillers grains are not only cheap but also palatable to cattle. They can be used as a protein supplement source during the fattening process of beef cattle. Distillers grains are rich in a variety of bioactive substances, have a high crude protein content, and have a high degradation rate in the rumen, which can effectively meet the protein needs of beef cattle during their growth. However, if untreated distillers grains are directly used as feed for cattle, it often causes intestinal digestion problems in cattle. This will not only hinder the cattle's comprehensive absorption of various nutrients in the distillers grains, but may also disrupt the normal operation of their digestive system, adversely affecting the healthy growth of cattle, and also weakening their immune capacity.

[0004] Simmental cattle are a dual-purpose dairy and meat breed, famous for their good carcass production and meat quality. They are stout, muscular, low in fat and evenly distributed, and have the advantages of cold and heat resistance, tolerance to roughage, fast growth and development, and high meat production performance. Due to the rapid growth and development of Simmental cattle during the fattening stage, they have weak resistance to diseases and are easily infected with diseases such as foot-and-mouth disease and mastitis, which leads to decreased appetite and physical weakness of Simmental cattle, thus affecting the growth and weight gain of Simmental cattle, and ultimately affecting the overall benefits of the farm. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a feed specially used for Simmental beef cattle and a preparation method thereof. By optimizing the feed formula and processing technology, the immune ability of Simmental cattle is improved while the production performance of beef cattle is significantly improved.

[0006] In a first aspect, the present invention provides a feed specifically for Simmental beef cattle, which contains, by weight: 5000-5530 parts of corn, 1300-1510 parts of soybean meal, 1000-1250 parts of bran, 100-150 parts of baking soda, 400-450 parts of premix, 1400-1600 parts of distiller's grains, 3-5 parts of Bacillus subtilis, 5-7 parts of Lactobacillus plantarum, 5-16 parts of licorice extract, and 10-15 parts of turmeric extract.

[0007] Furthermore, in parts by weight, the preferred formula of the feed is: 5000 parts of corn, 1510 parts of soybean meal, 1250 parts of bran, 150 parts of baking soda, 450 parts of premix, 1600 parts of distiller's grains, 5 parts of Bacillus subtilis, 5 parts of Lactobacillus plantarum, 16 parts of licorice extract, and 14 parts of turmeric extract.

[0008] Furthermore, the premix used in the feed is 2640 IU / kg vitamin A, 340 IU / kg vitamin D, 26 mg / kg vitamin E, 48 mg / kg zinc, 12 mg / kg copper, 0.3 mg / kg iodine, 60 mg / kg iron, 48 mg / kg manganese, and 0.36 mg / kg selenium.

[0009] In a second aspect, the present invention provides a method for preparing feed specifically for Simmental beef cattle, comprising: extracting licorice by water to obtain a licorice extract; extracting turmeric by ethanol to obtain a turmeric extract; and uniformly mixing corn, soybean meal, bran, baking soda, premix, distiller's grains, Bacillus subtilis, Lactobacillus plantarum, licorice extract and turmeric extract to obtain feed.

[0010] Furthermore, the licorice water extraction method comprises: crushing and sieving licorice to obtain licorice powder; mixing the licorice powder with water, heating and stirring to obtain an extract; vacuum filtering, evaporating, concentrating and drying the extract to a constant weight to obtain a licorice extract.

[0011] Furthermore, the mesh size of the licorice sieve is 20-30 meshes; the solid-liquid ratio of the licorice powder water extraction is 1:20-30, the water extraction temperature is 50-60° C., and the water extraction time is 8-12 hours.

[0012] Furthermore, the turmeric ethanol extraction method comprises: crushing and sieving turmeric to obtain turmeric powder; mixing the turmeric powder with ethanol and refluxing to extract to obtain an extract; cooling, evaporating, concentrating and drying the extract to a constant weight to obtain a turmeric extract.

[0013] Furthermore, the mesh size of the turmeric sieve is 40-50 meshes; the solid-liquid ratio of the turmeric powder ethanol extraction is 1:10-20, the ethanol extraction temperature is 60-80° C., and the ethanol extraction time is 1-2 hours.

[0014] Furthermore, the concentration of the ethanol is 60% to 80%.

[0015] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects or advantages:

[0016] (1) When the feed of the present invention is fed to Simmental cattle, the average daily weight gain of the Simmental cattle is 1.76-1.83 kg / d, the average feed intake is 21.98-22.64 kg / d, and the feed-to-weight ratio is 12.37-12.49. Compared with the control group, the average daily weight gain of the Simmental cattle is increased by 17.33%-22%, and the average feed intake is increased by 6.34%-9.53%, indicating that the feed of the present invention can increase the feed intake and feed conversion efficiency of Simmental cattle, promote growth, and reduce breeding costs.

[0017] (2) When any component of the microbial agent or plant extract in the feed of the present invention is reduced or replaced, the average daily weight gain is reduced by 11.48% to 13.11%, the average daily feed intake is reduced by 5.83% to 9.76%, and the feed-to-weight ratio is reduced by 1.94% to 8.41%, indicating that there is a synergistic effect between the plant extract and the microbial agent. Specifically, turmeric extract and licorice extract improve the taste of the feed, increase the feed intake of animals, promote the secretion of animal digestive enzymes, and accelerate the absorption and utilization of nutrients. The addition of Bacillus subtilis and Lactobacillus plantarum further enhances the digestive capacity of the intestine, especially the ability to decompose cellulose, so that the nutrients in the feed can be more fully released and absorbed, thereby improving the overall utilization efficiency of the feed.

[0018] (3) After feeding the feed provided by the present invention, the marbling score of the beef was 2.25, indicating that the feed provided by the present invention can improve the intramuscular fat content and distribution of beef, and enhance the taste and flavor of the meat; at the same time, the shear force of the beef was 3.55, and the cooking loss was 41.57%, indicating that the water retention and tenderness of the beef were improved.

[0019] (4) The feed of the present invention can improve the immunity of Simmental cattle in the fattening stage. After the test period, the levels of IgA, IgG, and IgM in the serum of Simmental cattle were 1.35 g / L, 16.24 g / L, and 2.97 g / L, respectively. The feed of the present invention effectively solves the problems of poor immunity, weak disease resistance, and low feed intake of Simmental cattle caused by their rapid growth and development. DETAILED DESCRIPTION

[0020] The technical scheme of the present invention is described below in conjunction with the embodiments, but the present invention is not limited to the following embodiments. The experimental methods and detection methods described in each embodiment are conventional methods unless otherwise specified; the reagents and materials described are all commercially available unless otherwise specified.

[0021] In the following examples, Bacillus subtilis and Lactobacillus plantarum were purchased from Shaanxi Rankang Biotechnology Co., Ltd. Both strains are common commercial strains in the field. The effective viable count of Bacillus subtilis is 2.0×10 10 CFU / g, the effective viable count of Lactobacillus plantarum is 1.0×10 10 CFU / g; distiller's grains were provided by Xinjiang Aksu Tarim Pure Grain Distillery.

[0022] Example 1

[0023] This embodiment provides a feed specifically for Simmental beef cattle.

[0024] The feed for Simmental beef cattle described in this embodiment includes the following components: corn, soybean meal, bran, baking soda, premix, distiller's grains (white distiller's grains, relative humidity is 60% to 80%), microbial agents and plant extracts. Among them, the microbial agents are Bacillus subtilis and Lactobacillus plantarum, the mass ratio of Bacillus subtilis and Lactobacillus plantarum is 0.4:1, and the amount of microbial agents added is 0.1% of the mass of the feed; the plant extracts are licorice extract and turmeric extract, the mass ratio of licorice extract and turmeric extract is 1:1, and the amount of plant extracts added is 0.2% of the mass of the feed.

[0025] Calculated by weight, the contents of the components of the feed specially used for Simmental beef cattle are: 5530 parts of corn, 1300 parts of soybean meal, 1200 parts of bran, 120 parts of baking soda, 420 parts of premix, 1400 parts of distiller's grains, 3 parts of Bacillus subtilis, 7 parts of Lactobacillus plantarum, 10 parts of licorice extract and 10 parts of turmeric extract.

[0026] The feed described in this embodiment was used to feed Simmental cattle, and the average daily weight gain of the Simmental cattle was 1.81 kg / d, the average feed intake was 22.57 kg / d, and the feed-to-weight ratio was 12.47.

[0027] Example 2

[0028] This embodiment provides a feed specifically for Simmental beef cattle.

[0029] The feed for Simmental beef cattle described in this embodiment includes the following components: corn, soybean meal, bran, baking soda, premix, distiller's grains, microbial agents and plant extracts. The microbial agents are Bacillus subtilis and Lactobacillus plantarum, the mass ratio of Bacillus subtilis and Lactobacillus plantarum is 1:1, and the amount of microbial agents added is 0.1% of the mass of the feed; the plant extracts are licorice extract and turmeric extract, the mass ratio of licorice extract and turmeric extract is 1.15:1, and the amount of plant extracts added is 0.3% of the mass of the feed.

[0030] In parts by weight, the contents of the components of the feed specifically for Simmental beef cattle described in this embodiment are: 5000 parts of corn, 1510 parts of soybean meal, 1250 parts of bran, 150 parts of baking soda, 450 parts of premix, 1600 parts of distiller's grains, 5 parts of Bacillus subtilis, 5 parts of Lactobacillus plantarum, 16 parts of licorice extract and 14 parts of turmeric extract.

[0031] The feed described in this embodiment was used to feed Simmental cattle, and the average daily weight gain of the Simmental cattle was 1.83 kg / d, the average feed intake was 12.64 kg / d, and the feed-to-weight ratio was 12.37.

[0032] Example 3

[0033] This embodiment provides a feed specifically for Simmental beef cattle.

[0034] The feed for Simmental beef cattle described in this embodiment includes the following components: corn, soybean meal, bran, baking soda, premix, distiller's grains, microbial agents and plant extracts. The microbial agents are Bacillus subtilis and Lactobacillus plantarum, the mass ratio of Bacillus subtilis and Lactobacillus plantarum is 0.7:1, and the amount of microbial agents added is 0.1% of the mass of the feed; the plant extracts are licorice extract and turmeric extract, the mass ratio of licorice extract and turmeric extract is 1:3, and the amount of plant extracts added is 0.2% of the mass of the feed.

[0035] In parts by weight, the contents of the components of the feed specifically for Simmental beef cattle described in this embodiment are: 5470 parts of corn, 1500 parts of soybean meal, 1000 parts of bran, 100 parts of baking soda, 400 parts of premix, 1500 parts of distiller's grains, 4 parts of Bacillus subtilis, 6 parts of Lactobacillus plantarum, 5 parts of licorice extract and 15 parts of turmeric extract.

[0036] The feed described in this embodiment was used to feed Simmental cattle, and the average daily weight gain of the Simmental cattle was 1.76 kg / d, the average feed intake was 21.98 kg / d, and the feed-to-weight ratio was 12.49.

[0037] Example 4

[0038] The invention provides a method for preparing feed specially used for Simmental beef cattle.

[0039] 1. Preparation of Licorice Extract

[0040] Grind the licorice root through a 20-30 mesh sieve, weigh 100g of powder and add water, with a solid-liquid ratio of 1:20-30; heat to 50-60°C and stir for 8-12h, then vacuum filter, retain the filtrate, and perform secondary extraction on the residue. Add water to the residue at a volume ratio of 1:20-30, heat to 50-60°C and stir for 1-2h, vacuum filter to obtain a filtrate. Combine the filtrates, evaporate, concentrate and dry to constant weight to obtain a licorice extract.

[0041] 2. Preparation of turmeric (or ginger) extract

[0042] Crush turmeric (or ginger) and pass it through a 40-50 mesh sieve, weigh 10 g of turmeric powder into a conical flask and add 60%-80% ethanol, the solid-liquid ratio is 1:10-20, reflux extraction is performed at 60-80° C. for 1-2 hours, cool, evaporate, concentrate and dry to constant weight to obtain a turmeric (or ginger) extract.

[0043] 3. Preparation method of feed specifically for Simmental beef cattle

[0044] Corn, soybean meal, bran, baking soda, premix, distiller's grains, Bacillus subtilis, Lactobacillus plantarum, licorice extract and turmeric extract are mixed according to the proportions described in Examples 1 to 3 to obtain the feed specifically for Simmental beef cattle of the present invention.

[0045] Example 5

[0046] This embodiment provides an experimental method for feeding Simmental cattle with a feed specifically for Simmental beef cattle.

[0047] 1. Preliminary preparations for the test

[0048] This embodiment was experimented in Shaya County, Aksu Prefecture, Xinjiang, and the experimental period was from August to October 2024. 24 Simmental cattle of about 7 months old and similar weight were selected for short-term fattening, and the fattening method was tethering in a barn. The 24 cattle were divided into 6 groups, with 4 in each group. They were fed twice a day at 7:00 am and 5:30 pm, and the feeding amount of each feed was 20 kg. The diet composition and nutritional level of the experimental animals are shown in Table 1.

[0049] Table 1 Diet composition and nutritional level of each experimental group

[0050]

[0051]

[0052] Note: The ingredients and content of the premix are: 2640IU / kg vitamin A, 340IU / kg vitamin D, 26mg / kg vitamin E, 48mg / kg zinc, 12mg / kg copper, 0.3mg / kg iodine, 60mg / kg iron, 48mg / kg manganese, 0.36mg / kg selenium.

[0053] 2. Animal Management

[0054] All experimental animals were fed in tethered sheds. During the experimental period, the cattle were numbered, marked, dewormed and prevented. The cattle shed was disinfected before the experimental cattle entered the shed. During the 15-day pre-feeding period, the feeding situation and mental state of the experimental cattle were observed; during the 90-day formal experimental period, the cattle were fed on time, provided with sufficient clean drinking water, cleaned the feeding trough before adding feed, and the feed intake was recorded. After feeding every day, the feces was cleaned and the cattle were brushed to keep the environment clean. The empty stomach weight was weighed and recorded before the start of the formal experimental period and before slaughter.

[0055] Example 6

[0056] This example provides the changes in production performance of Simmental cattle in each test group.

[0057] 1. Growth performance analysis of each experimental group

[0058] The growth performance of the control group, experimental group 1, experimental group 2, experimental group 3, experimental group 4 and experimental group 5 during the experimental period are shown in Table 2. There was little difference in body weight among the experimental groups at the initial stage, indicating that the actual difference in body weight among the experimental groups was not enough to affect the experimental results.

[0059] Compared with the control group, when the feed for Simmental beef cattle contained only plant extracts (experimental group 1), the average daily weight gain increased by 4.67%, the average feed intake increased by 2.81%, and the feed-to-weight ratio decreased by 1.77%. Compared with experimental group 1, experimental group 2 (the feed for Simmental beef cattle contained only microbial agents) decreased the average daily weight gain by 1.29%, the average daily feed intake decreased by 3.29%, and the feed-to-weight ratio decreased by 2.07%. Compared with the control group, experimental group 5 (the feed for Simmental beef cattle) increased the average daily weight gain by 22.00%, the average feed intake increased by 9.53%, and the feed-to-weight ratio decreased by 10.23%. Furthermore, compared with experimental group 3 (no Bacillus subtilis was added to the feed specifically for Simmental beef cattle), experimental group 4 (turmeric extract was replaced with ginger extract) and experimental group 5, the average daily weight gain was reduced by 13.11% and 11.48%, the average daily feed intake was reduced by 5.83% and 9.76%, and the feed-to-weight ratio was reduced by 8.41% and 1.94%, respectively.

[0060] The above data show that ingredients such as curcumin in turmeric extract can stimulate the appetite of animals, and licorice extract has special fragrance and sweetness, and the two work together to improve the taste and flavor of feed, and improve the appetite and feed intake of animals. Active ingredients such as curcumin in turmeric extract and glycyrrhizic acid in licorice extract have significant anti-inflammatory and antioxidant effects, can regulate the immune system of animals, and improve the disease resistance and antioxidant power of the body. Bacillus subtilis and Lactobacillus plantarum can improve the utilization rate of feed, improve the intestinal environment, enhance immune function, thereby improving the production performance and health of animals. When any component of the microbial agent or plant extract in the feed dedicated to Simmental beef cattle described in the present invention is reduced or replaced, the conversion rate (feed-to-weight ratio) of Simmental cattle to feed fails to reach the optimal level of the present invention, indicating that there is a synergistic effect between the plant extract and the microbial agent in the feed dedicated to Simmental beef cattle described in the present invention. Turmeric extract and licorice extract improve the taste of feed, increase the animal's feed intake, promote the secretion of animal digestive enzymes, and accelerate the absorption and utilization of nutrients. At the same time, the addition of Bacillus subtilis and Lactobacillus plantarum further enhances the digestive capacity of the intestine, especially the ability to decompose cellulose, so that the nutrients in the feed can be more fully released and absorbed, thereby improving the overall utilization efficiency of the feed.

[0061] Table 2 Growth performance of test cattle in each test group

[0062]

[0063]

[0064] 2. Analysis of immune performance of each test group

[0065] On the 90th day of the experiment, jugular vein blood was collected from the experimental cattle before feeding the Simmental cattle. The collected blood samples were centrifuged to obtain serum. According to the operating requirements of the Elisa kit, the immune performance indicators of the Simmental cattle were tested. The test results are shown in Table 3.

[0066] Table 3 Test results of immune performance indicators in each test group

[0067] project Control group Experimental Group 1 Experimental Group 2 Test 3 Test 4 Test 5 IgA (g / L) 0.58 0.74 0.72 0.96 1.13 1.35 IgG(g / L) 13.98 14.62 14.41 15.88 16.09 16.24 IgM(g / L) 2.14 2.65 2.43 2.84 2.94 2.97

[0068] As can be seen from Table 3, compared with the control group, the contents of IgA, IgG, and IgM in test group 1, test group 2, test group 3, and test group 4 were significantly increased, among which the contents of IgA, IgG, and IgM in test group 5 were significantly higher than those in other test groups, indicating that the feed specially used for Simmental beef cattle of the present invention can improve the immunity of Simmental cattle in the fattening stage and enhance its resistance to diseases.

[0069] 3. Analysis of slaughter performance and beef quality of each test group

[0070] The cross section of the 12th or 13th rib eye muscle of Simmental cattle was selected for evaluation. The evaluation criteria are shown in Table 4. The measurement results are the average values ​​of each test group.

[0071] Table 4 Beef marbling scoring criteria

[0072] score Scoring Criteria 1 The marble pattern is very rich, the meat is delicate, the fat is evenly distributed, and the meat is bright red. 2 The marble pattern is richer, the meat is more delicate, the fat is more evenly distributed, and the meat is bright red. 3 Average marbling, average meat quality, average fat distribution, bright red meat color 4 Less marbling, coarser texture, uneven fat distribution, darker meat color 5 Little or no marbling, coarse texture, uneven fat distribution, dull color

[0073] The slaughter performance and beef quality of the test cattle in each test group are shown in Table 5.

[0074] Table 5 Slaughter performance and beef quality of each experimental group

[0075] project Control group Experimental Group 1 Experimental Group 2 Test 3 Test 4 Test 5 Slaughter rate (%) 53.42 53.71 55.68 56.35 57.25 57.86 Live weight before slaughter (mm) 565.34 570.72 571.13 572.95 581.59 586.56 <![CDATA[Carcass weight (cm 2 )]]> 302.00 306.53 318.01 322.86 332.96 339.38 pH 5.84 5.90 5.88 5.93 5.96 5.97 Marbling score 3.00 2.50 2.75 2.50 2.50 2.25 Shear force(Kgf) 5.54 4.87 4.31 4.87 3.64 3.55 Cooking loss (%) 37.85 38.66 43.84 42.48 41.39 41.57

[0076] As shown in Table 5, when comparing the control group with the experimental group 1 (i.e., the feed for Simmental cattle only contained plant extracts), it was found that some changes occurred in the meat quality characteristics of Simmental cattle after slaughter. Specifically, the pH value and cooking loss after slaughter increased slightly, while the marbling score and shear force decreased slightly. When comparing the experimental group 1 with the experimental group 2 (i.e., the feed for Simmental cattle only contained Bacillus subtilis and Lactobacillus plantarum), the slaughter rate increased slightly (1.97%), while the pH value after slaughter decreased significantly (0.34%), and the shear force decreased by 11.50%. However, the cooking loss increased by 13.40%. Compared with the control group, the slaughter rate of test group 5 (i.e., feed dedicated to Simmental beef cattle) increased by 4.44%, and the pH value after slaughter increased to 5.97, the marbling score was 2.25, the shear force was reduced by 35.92%, and the cooking loss was slightly increased (3.72%), indicating that the feed dedicated to Simmental beef cattle can improve the slaughter rate and meat quality of Simmental cattle. On the basis of test 5, the slaughter rate and meat quality evaluation of Simmental cattle were reduced by removing Bacillus subtilis (test group 3). Furthermore, the turmeric extract in the feed dedicated to Simmental beef cattle was replaced with ginger extract (test group 4), and the slaughter rate and meat quality evaluation of Simmental cattle were also slightly reduced.

[0077] As probiotics, Bacillus subtilis and Lactobacillus plantarum can improve the feeding effect of wet distiller's grains and improve the production performance and health of animals by decomposing cellulose, regulating the balance of intestinal microecology, and improving the nutritional value of feed. Glycyrrhizic acid and other ingredients in licorice extract have anti-inflammatory effects, which can reduce the stimulation and damage of wet distiller's grains to the intestinal mucosa of Simmental cattle and promote the repair and regeneration of intestinal mucosa. Turmeric extract can enhance the immune function of Simmental cattle and improve the body's disease resistance and antioxidant capacity. Ginger extract also has antioxidant and anti-inflammatory effects, which can enhance the immune function of Simmental cattle and improve the body's disease resistance and antioxidant capacity. When any component of the microbial agent or plant extract in the feed specifically for Simmental beef cattle described in the present invention is reduced or replaced, the slaughter rate and meat quality improvement effect of Simmental cattle fail to reach the optimal level of the present invention, indicating that there is a synergistic effect between Bacillus subtilis, Lactobacillus plantarum, turmeric extract and licorice extract. Their joint action not only improves the slaughter rate and meat performance of Simmental cattle, but also optimizes the fat distribution and texture of beef, making the beef more tender and having lower cooking loss.

[0078] The embodiments described above are part of the embodiments of the present invention, but not all of them. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but only represents selected embodiments of the present invention. All other embodiments obtained without creative work and related deductions and substitutions made by ordinary technicians in the field under the conditions of the concept of the present invention belong to the scope of protection of the present invention.

Claims

1. A feed specially used for Simmental beef cattle, characterized in that: The feed contains, by weight, 5000-5530 parts of corn, 1300-1510 parts of soybean meal, 1000-1250 parts of bran, 100-150 parts of baking soda, 400-450 parts of premix, 1400-1600 parts of distiller's grains, 3-5 parts of Bacillus subtilis, 5-7 parts of Lactobacillus plantarum, 5-16 parts of licorice extract, and 10-15 parts of turmeric extract.

2. The feed dedicated to Simmental beef cattle according to claim 1, characterized in that: In parts by weight, the feed contains: 5000 parts of corn, 1510 parts of soybean meal, 1250 parts of bran, 150 parts of baking soda, 450 parts of premix, 1600 parts of distiller's grains, 5 parts of Bacillus subtilis, 5 parts of Lactobacillus plantarum, 16 parts of licorice extract, and 14 parts of turmeric extract.

3. The feed dedicated to Simmental beef cattle according to claim 1, characterized in that: The premix contains 2640 IU / kg vitamin A, 340 IU / kg vitamin D, 26 mg / kg vitamin E, 48 mg / kg zinc, 12 mg / kg copper, 0.3 mg / kg iodine, 60 mg / kg iron, 48 mg / kg manganese and 0.36 mg / kg selenium.

4. A method for preparing feed specifically for Simmental beef cattle, characterized in that: include: Extracting licorice with water to obtain licorice extract; extracting turmeric with ethanol to obtain turmeric extract; The corn, soybean meal, bran, baking soda, premix, distiller's grains, Bacillus subtilis, Lactobacillus plantarum, licorice extract and turmeric extract are uniformly mixed to obtain feed.

5. The preparation method according to claim 4, characterized in that: The method for extracting liquorice with water comprises the following steps: crushing and sieving liquorice to obtain liquorice powder; mixing the liquorice powder with water, heating and stirring to obtain an extract; and vacuum filtering, evaporating, concentrating and drying the extract to a constant weight to obtain a liquorice extract.

6. The preparation method according to claim 5, characterized in that: The mesh size of the licorice sieve is 20-30 meshes; the solid-liquid ratio of the licorice powder water extraction is 1:20-30, the water extraction temperature is 50-60° C., and the water extraction time is 8-12 hours.

7. The preparation method according to claim 4, characterized in that: The turmeric ethanol extraction method comprises the following steps: crushing and sieving turmeric to obtain turmeric powder; mixing the turmeric powder with ethanol and subjecting the mixture to reflux extraction to obtain an extract; and cooling, evaporating, concentrating and drying the extract to a constant weight to obtain a turmeric extract.

8. The preparation method according to claim 7, characterized in that: The mesh of the turmeric sieve is 40-50 meshes; the solid-liquid ratio of the turmeric powder extracted with ethanol is 1:10-20, the ethanol extraction temperature is 60-80° C., and the ethanol extraction time is 1-2 hours.

9. The preparation method according to claim 7, characterized in that: The concentration of the ethanol is 60% to 80%.

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