Ewe feed and ewe feeding method

Abstract

The invention relates to the technical field of feed, and particularly discloses ewe feed and an ewe feeding method. The fermented feed is added on the basis of the forage and the concentrated feed, the salt, the calcium hydrophosphate, the succinic acid, the calcium propionate and other components are additionally added as auxiliary materials, and the composition of the concentrated feed is limited. Through synergistic cooperation of the components, the ewe feed can fully meet the requirements of lactation of ewes and nutrition intake of lambs, does not easily affect the growth of the ewes in the lactation period, can enable the ewes to maintain ideal fat conditions, and is beneficial to efficient development of the sheep breeding industry.

Description

Technical Field

[0001] The present application relates to the technical field of feeds, and more specifically, to a feed for ewes and a feeding method for ewes. Background Art

[0002] In the livestock industry, especially in sheep farming, the early survival rate of lambs is restricted by many factors. Among them, the lactation quality of ewes and the reasonable regulation of the nutritional intake of lambs before and after weaning are both key influencing factors. At present, the common feeding and management models lack flexibility in adapting to different seasonal changes, individual differences of ewes, and the growth needs of lambs. The problems of indigestion and low survival rate of lambs are still widespread.

[0003] Lactation is not only crucial for the survival of lambs, but also causes ewes to consume a large amount of nutrients. Traditional feeding strategies often neglect the importance of the nutritional supply mode before and after weaning, overly rely on fixed formula feeds, and fail to fully consider the changes in the lactation cycle of ewes and the nutritional needs of lambs at specific periods, resulting in obvious weight loss and malnutrition in ewes during lactation. Currently, some farmers try to make up for the nutritional gap by increasing the feed with a high protein content, but this method not only increases the cost, but also may cause an excessive burden on the digestive system of ewes and even lead to diseases.

[0004] Regarding the above related technologies, the inventor believes that ewes have a large nutritional requirement during lactation, while the feeds used in traditional feeding methods often do not take into account the needs of ewe lactation and lamb nutritional intake, which easily affects the growth of ewes and is not conducive to the efficient development of the sheep farming industry. Summary of the Invention

[0005] In related technologies, traditional feeds often do not take into account the needs of ewe lactation and lamb nutritional intake, which easily affects the growth of ewes and is not conducive to the efficient development of the sheep farming industry. To improve this defect, the present application provides a feed for ewes and a feeding method for ewes.

[0006] In a first aspect, the present application provides a feed for ewes, adopting the following technical solution: A feed for ewes, comprising the following components in parts by weight: 2.2 - 2.4 parts of forage, 0.8 - 1.0 parts of concentrate, 0.2 - 0.3 parts of fermented feed, 0.01 - 0.02 parts of salt, 0.05 - 0.10 parts of calcium hydrogen phosphate, 0.03 - 0.05 parts of succinic acid, 0.006 - 0.008 parts of calcium propionate. The concentrate comprises the following components in weight percentage: 20 - 24% of soybean meal, 8 - 10% of crop by-products, 4 - 6% of nutritional supplement, 0.10 - 0.15% of xylooligosaccharide, and the balance is made up to 100% by corn; the nutritional supplement includes a vitamin A sustained-release agent.

[0007] By adopting the above technical solution, the present application adds fermented feed on the basis of roughage and concentrate. Since the fermented feed has been processed by microbial fermentation, the nutrients contained therein are more easily absorbed, and the burden on the gastrointestinal tract of ewes is also smaller. Salt can endow the feed with a suitable salty taste, making the ewes more willing to eat. Calcium hydrogen phosphate can supplement calcium and phosphorus for ewes, filling the consumption of lactation to a certain extent. Succinic acid can promote the degradation of cellulose by digestive tract microorganisms in ewes, and at the same time produce precursor substances such as acetic acid that can be used for fat synthesis; calcium propionate can inhibit the proliferation of spoilage bacteria in the feed, helping to improve the intestinal flora balance of ewes. Succinic acid and calcium propionate have a synergistic promoting effect on the fermentation of food in the stomach of ewes, and can improve the feed conversion efficiency of ewes. In the concentrate, soybean meal and corn are the main components, and there are also appropriate amounts of crop by-products as supplements, while xylooligosaccharide and nutritional supplements are used as additional supplements. Xylooligosaccharide can improve the absorption effect of calcium in ewes, helping ewes to breastfeed continuously and stably. The vitamin A sustained-release agent can provide vitamin A for a long time, promoting the growth and development of ewes. Through the synergistic cooperation of the above components, the ewe feed of the present application can fully meet the needs of ewe lactation and lamb nutrition intake, is not easy to affect the growth of ewes, and can keep ewes in an ideal body condition during the lactation period, which is beneficial to the efficient development of the sheep breeding industry.

[0008] Preferably, the vitamin A sustained-release agent is prepared according to the following method: (1) Mix vitamin A, lecithin, cholesterol and surfactant, add them to chloroform as a solvent for ultrasonic treatment to obtain a suspension; (2) Perform rotary evaporation on the suspension to remove the solvent chloroform in the suspension, and then add the residue to a hydration solution for magnetic stirring to obtain a vitamin A sustained-release agent; the components of the hydration solution include deionized water.

[0009] By adopting the above technical solution, with the assistance of surfactant, the present application encapsulates vitamin A with lecithin and cholesterol to obtain a liposome containing vitamin A, namely the vitamin A sustained-release agent.

[0010] Preferably, the weight ratio of lecithin to cholesterol is (4 - 40):1.

[0011] By adopting the above technical solution, the present application optimizes the weight ratio of lecithin to cholesterol, increases the vitamin A content in the vitamin A sustained-release agent, helps to promote the growth of ewes, can keep ewes in an ideal body condition during the lactation period, and is beneficial to the efficient development of the sheep breeding industry.

[0012] Preferably, the weight ratio of vitamin A to lecithin is 1:(50 - 125).

[0013] By adopting the above technical solution, the present application optimizes the weight ratio of vitamin A to lecithin, which helps to fully achieve the coating of vitamin A, increases the vitamin A content in the vitamin A sustained-release agent, helps to promote the growth of ewes, enables ewes to maintain an ideal body condition during lactation, and is conducive to the efficient development of the sheep breeding industry.

[0014] Preferably, the components of the hydration liquid further include sucrose.

[0015] By adopting the above technical solution, during the formation of the vitamin A sustained-release agent, sucrose can adsorb and deposit on the surface of the vitamin A sustained-release agent, increasing the adhesiveness of the vitamin A sustained-release agent, enabling the vitamin A sustained-release agent to stay in the ewe's digestive tract for a longer time, thereby improving the absorption effect of vitamin A by ewes, promoting the growth of ewes, enabling ewes to maintain an ideal body condition during lactation, and being conducive to the efficient development of the sheep breeding industry.

[0016] Preferably, the sucrose concentration in the hydration liquid is 5-15 wt%.

[0017] By adopting the above technical solution, the present application optimizes the sucrose concentration in the hydration liquid, which helps to improve the retention effect of the vitamin A sustained-release agent in the ewe's digestive tract.

[0018] Preferably, the fermented feed is prepared according to the following method: Mix Caragana korshinskii, corn, wheat bran, soybean meal, Pleurotus eryngii mushroom bran and rice bran to obtain a premix. After pulverizing the premix, add water and fermentation strains and mix well to obtain a mixture. Put the mixture into a fermentation bag for constant-temperature fermentation treatment, and obtain the fermented feed after the fermentation ends.

[0019] By adopting the above technical solution, the present application optimizes Caragana korshinskii, corn, wheat bran, soybean meal, Pleurotus eryngii mushroom bran and rice bran. These raw materials are used to prepare a premix, and then the fermented feed is obtained through fermentation treatment. The above raw materials contain a large amount of cellulose and lignin, and also contain tannic acid and some volatile substances. Fermentation treatment can fully degrade these components, overcoming the defects of poor palatability and difficult digestion of these raw materials. Moreover, fermentation treatment further degrades proteins into short peptides and amino acids, thereby making full use of the nutrients in the above raw materials and being conducive to the weight gain of ewes during lactation.

[0020] Preferably, in the method for preparing the fermented feed, the raw materials for preparing the premix further include beet molasses.

[0021] By adopting the above technical solution, after fermentation, beet molasses can promote the protein intake of ewes and improve the deposition of proteins, thereby making full use of the high-protein components in the feed and effectively improving the meat production rate of ewes.

[0022] Preferably, in the method for preparing the fermented feed, the raw materials for preparing the premix further include extruded straw.

[0023] By adopting the above technical solution, straw is originally a feed with a relatively high cellulose content and difficult to digest and absorb, while the extrusion treatment can improve the palatability and digestion and absorption rate of straw, which helps to promote the growth of ewes.

[0024] In a second aspect, the present application provides a feeding method for ewes, adopting the following technical solution.

[0025] A feeding method for ewes includes the following steps: (1) Prepare the ewe feed described in any one of the above, for standby; (2) Divide according to whether the weight of the ewe exceeds 40 kg. For ewes with a weight below 40 kg, adopt the benchmark feeding amount. For ewes with a weight above 40 kg, the feeding amount is increased according to the part of the ewe's weight exceeding 40 kg. On the basis of 40 kg, for every 2.5 kg exceeded, the feeding amount is increased by 1% on the basis of the benchmark feeding amount, and so on; the specific determination method of the benchmark feeding amount is: if the udder of a single ewe is not red, or the proportion of ewes with red udders in the flock does not exceed 1 / 3, the benchmark feeding amount is 0.05 - 0.1 kg / day; if the udder of a single ewe is red, or the proportion of ewes with red udders in the flock exceeds 1 / 3, the benchmark feeding amount is 0.25 - 0.5 kg / day; (3) According to the feeding amount determined in step (2), use the ewe feed in step (1) to raise the postpartum lactating ewe until the lactation period of the ewe ends.

[0026] By adopting the above technical solution, the present application dynamically adjusts the feeding amount according to the weight and lactation performance of the ewes, and obtains a feeding method suitable for the lactation period of the ewes.

[0027] In summary, the present application has the following beneficial effects: 1. The present application adds fermented feed on the basis of forage and concentrate, and also additionally adds components such as salt, calcium hydrogen phosphate, succinic acid, calcium propionate, etc. as aids, and limits the composition of the concentrate. Through the synergistic cooperation of the above various components, the ewe feed of the present application can fully meet the needs of ewe lactation and lamb nutrient intake, and is not likely to affect the growth of ewes. During the lactation period, the ewes can maintain an ideal body condition, and the ideal body condition helps the ewes to come into heat earlier, shortening the anestrus period of the ewes, greatly improving the economic benefits of the farm, and being conducive to the efficient development of the sheep breeding industry.

[0028] 2. With the assistance of surfactants, the present application encapsulates vitamin A using lecithin and cholesterol to obtain liposomes containing vitamin A, namely vitamin A sustained-release agents. Through the optimization of the formulation components, the vitamin A sustained-release agents can provide vitamin A for a long time, effectively promoting the growth and development of ewes.

[0029] 3. The present application optimizes Caragana korshinskii, corn, wheat bran, soybean meal, Pleurotus eryngii mushroom bran, and rice bran, and uses these raw materials to prepare a premix, which is then fermented to obtain fermented feed. The above raw materials contain a large amount of cellulose and lignin, and also contain tannic acid and some volatile substances. Fermentation can fully degrade these components, overcoming the defects of poor palatability and indigestibility of these raw materials. Moreover, fermentation further degrades proteins into short peptides and amino acids, thus making full use of the nutrients in the above raw materials. Detailed implementation manners

[0030] The following further elaborates on the present application in conjunction with examples, preparation examples, and comparative examples. The raw materials involved in the present application can all be obtained commercially.

[0031] Preparation example of vitamin A sustained-release agent The following takes Preparation Example 1 as an example for illustration.

[0032] Preparation Example 1 In this preparation example, the weight ratio of lecithin to cholesterol is 40:1, the weight ratio of vitamin A to lecithin is 1:10, the weight ratio of lecithin to surfactant is 1:2, the surfactant is Tween 80, and the hydration liquid is deionized water.

[0033] In this preparation example, the vitamin A sustained-release agent is prepared according to the following method: (1) Mix vitamin A, lecithin, cholesterol, and surfactant, add them to the solvent chloroform, and perform ultrasonic treatment for 3 min under the condition of 32 KHz to obtain a suspension; (2) Perform rotary evaporation treatment on the suspension at 30 °C for 2 h to remove the solvent chloroform in the suspension, and then add the residue to the hydration liquid for magnetic stirring for 30 min to obtain the vitamin A sustained-release agent.

[0034] Preparation Example 2 The difference between this preparation example and Preparation Example 1 is that the weight ratio of lecithin to cholesterol is 20:1.

[0035] Preparation Example 3 The difference between this preparation example and Preparation Example 1 is that the weight ratio of lecithin to cholesterol is 4:1.

[0036] Preparation Example 4 This preparation example is different from Preparation Example 1 in that the weight ratio of lecithin to cholesterol is 2:1.

[0037] Preparation Example 5 This preparation example is different from Preparation Example 3 in that the weight ratio of vitamin A to lecithin is 1:50.

[0038] Preparation Example 6 This preparation example is different from Preparation Example 3 in that the weight ratio of vitamin A to lecithin is 1:100.

[0039] Preparation Example 7 This preparation example is different from Preparation Example 3 in that the weight ratio of vitamin A to lecithin is 1:125.

[0040] Preparation Example 8 This preparation example is different from Preparation Example 6 in that the components of the hydration liquid further include sucrose, and the concentration of sucrose in the hydration liquid is 2.5 wt%.

[0041] Preparation Example 9 This preparation example is different from Preparation Example 8 in that the concentration of sucrose in the hydration liquid is 5 wt%.

[0042] Preparation Example 10 This preparation example is different from Preparation Example 8 in that the concentration of sucrose in the hydration liquid is 10 wt%.

[0043] Preparation Example 11 This preparation example is different from Preparation Example 8 in that the concentration of sucrose in the hydration liquid is 15 wt%.

[0044] Preparation Example of Fermented Feed The following takes Preparation Example 12 as an example for illustration.

[0045] Preparation Example 12 In this preparation example, the fermentation strains used are Saccharomyces cerevisiae (1×10 8 CFU / g), Bacillus subtilis (2×10 6 CFU / g) and Lactobacillus plantarum (1.5×10 10 CFU / g), and the addition amounts of the three are 1 wt%, 2 wt% and 1 wt% respectively.

[0046] In this preparation example, the fermented feed is prepared according to the following method: Mix Caragana korshinskii, corn, wheat bran, soybean meal, Pleurotus eryngii mushroom bran and rice bran according to a weight ratio of 1:6:2:2:1:1 to obtain a premix. After crushing the premix, add water and fermentation strains and mix evenly to obtain a mixture with a water content of 50 wt%. Put the mixture into a fermentation bag and carry out constant temperature fermentation treatment at 32°C. After 10 days, the fermented feed is obtained.

[0047] Preparation Example 13 The difference between this preparation example and Preparation Example 12 is that the raw materials for preparing the premix also include beet molasses. The sucrose content of beet molasses is 0.5390 g / mL, glucose is 0.0945 g / mL, fructose is 0.0008 g / mL, and the weight ratio of beet molasses to corn is 1:6.

[0048] Preparation Example 14 The difference between this preparation example and Preparation Example 13 is that the raw materials for preparing the premix also include expanded straw. The expanded straw is processed by expanding rice straw (Kenjing 8) at 140 °C and 4 MPa, and the weight ratio of expanded straw to corn is 1:6. Examples

[0049] Examples 1 - 5 Taking Example 1 as an example for illustration below.

[0050] Example 1 In this example, the forage is alfalfa, the agricultural crop by-products include tomato pomace and wheat bran, and the weight ratio of tomato pomace to wheat bran is 1:2. The wheat bran is wheat bran; the nutritional supplement is a mixture of the vitamin A sustained-release agent of Preparation Example 1 and G5804 premix feed in a weight ratio of 1:1. The vitamin A content of G5804 premix feed is 120 KIU / kg, and the fermented feed is prepared according to the method of Preparation Example 12.

[0051] This example provides a ewe feed, including the following components in parts by weight: 2.2 kg of forage, 0.8 kg of concentrate, 0.2 kg of fermented feed, 0.01 kg of salt, 0.05 kg of calcium hydrogen phosphate, 0.03 kg of succinic acid, and 0.006 kg of calcium propionate. The concentrate includes the following components by weight percentage: 20% of soybean meal, 8% of agricultural crop by-products, 4% of nutritional supplement, 0.10% of xylo-oligosaccharide, and the balance is made up to 100% by corn.

[0052] The preparation method of the ewe feed in this example includes the following steps: (1) Mix soybean meal, agricultural crop by-products, nutritional supplement, xylo-oligosaccharide, and corn to obtain the concentrate, and set aside; (2) Mix forage, concentrate, fermented feed, salt, calcium hydrogen phosphate, succinic acid, and calcium propionate to obtain the ewe feed.

[0053] This example also provides a ewe feeding method, including the following steps: (1) Prepare the ewe feed and set aside; (2) Divide according to whether the weight of the ewe exceeds 40 kg. For ewes with a weight below 40 kg, adopt the baseline feeding amount. For ewes with a weight above 40 kg, increase the feeding amount according to the part by which the ewe's weight exceeds 40 kg. For every 2.5 kg exceeded on the basis of 40 kg, the feeding amount is increased by 1% on the basis of the baseline feeding amount, and so on; the specific determination method of the baseline feeding amount is as follows: if the udder of a single ewe is not red, or the proportion of ewes with red udders in the flock does not exceed 1 / 3, the baseline feeding amount is 0.05 kg / day (denoted as feeding amount A); if the udder of a single ewe is red, or the proportion of ewes with red udders in the flock exceeds 1 / 3, the baseline feeding amount is 0.25 kg / day (denoted as feeding amount B); (3) According to the feeding amount determined in step (2), use the ewe feed in step (1) to feed lactating sheep ewes after giving birth until the lactation period of the ewes ends.

[0054] As shown in Table 1, the differences in Examples 1-5 mainly lie in the raw material ratios and feeding amounts of the ewe feed.

[0055] Table 1 Raw material ratios of the ewe feed Examples 5-15 As shown in Table 2, the differences in Examples 5-15 lie in the different preparation examples of the vitamin A sustained-release agent.

[0056] Table 2 Preparation examples of the vitamin A sustained-release agent Example 16 The difference between this example and Example 15 is that the fermented feed is prepared according to the method of Preparation Example 13.

[0057] Example 17 The difference between this example and Example 15 is that the fermented feed is prepared according to the method of Preparation Example 14.

[0058] Comparative example Comparative Example 1 In this comparative example, the nutritional supplement is G5804 premix feed.

[0059] This comparative example provides an ewe feed, including the following components in parts by weight: 2.2 kg of forage and 0.8 kg of concentrate. The concentrate includes the following components by weight percentage: 20% soybean meal, 10% wheat bran, 4% nutritional supplement, and the balance is made up to 100% by corn.

[0060] This example provides a preparation method of an ewe feed, including the following steps: (1) Mix soybean meal, wheat bran, nutritional supplements and corn to obtain concentrate feed for standby. (2) Mix forage and concentrate feed to obtain ewe feed.

[0061] Comparative Example 2 The difference between this comparative example and Example 1 is that the components of the ewe feed do not include fermented feed.

[0062] Comparative Example 3 The difference between this comparative example and Example 1 is that the components of the ewe feed do not include succinic acid.

[0063] Comparative Example 4 The difference between this comparative example and Example 1 is that the components of the ewe feed do not include calcium propionate.

[0064] Comparative Example 5 The difference between this comparative example and Example 1 is that the components of the concentrate feed do not include xylo-oligosaccharide.

[0065] Comparative Example 6 The difference between this comparative example and Example 1 is that all of the vitamin A sustained-release agent is replaced with G5804 premix feed.

[0066] Comparative Example 7 The difference between this comparative example and Example 1 is that all of the tomato pomace is replaced with wheat bran.

[0067] Performance detection test method Select 2-year-old ewes entering the lactation period. Under the condition that the ewes maintain normal lactation, continuously feed the ewe feed for 44 days. Before the formal test starts and ends, fast weigh the ewes for two consecutive days before morning feeding (8:00). Calculate the weight gain of the ewes according to the weighing results. The average value of the weight gains of 5 ewes in each group is taken as the final result. Based on the weight gain corresponding to the ewe feed in Comparative Example 1, calculate the ratio between the weight gains of each example and comparative example and the weight gain in Comparative Example 1. Denote this ratio as the relative weight gain rate. The results are shown in Table 3.

[0068] Table 3 Relative weight gain rate Sample Relative weight gain rate / % Sample Relative weight gain rate / % Example 1 119.6 Example 13 128.8 Example 2 120.1 Example 14 129.6 Example 3 120.3 Example 15 130.3 Example 4 121.4 Example 16 133.5 Example 5 122.7 Example 17 134.7 Example 6 123.5 Comparative Example 1 100.0 Example 7 124.1 Comparative Example 2 106.5 Example 8 123.7 Comparative Example 3 112.8 Example 9 124.8 Comparative Example 4 111.3 Example 10 125.6 Comparative Example 5 115.7 Example 11 125.2 Comparative Example 6 113.6 Example 12 127.4 Comparative Example 7 115.1 Combined with Examples 1-5 and Comparative Example 1 and with reference to Table 3, it can be seen that the relative weight gain rates measured in Examples 1-5 are all higher than that in Comparative Example 1. This is because in the present application, fermented feed is added on the basis of forage and concentrate, and components such as table salt, calcium hydrogen phosphate, succinic acid, calcium propionate, etc. are additionally added as aids, and the composition of the concentrate is defined. Through the synergistic cooperation of the above various components, the ewe feed of the present application can fully meet the needs of ewes for lactation and lambs' nutrient intake, is not likely to affect the growth of ewes, can enable ewes to maintain an ideal body condition during the lactation period, and is conducive to the efficient development of the sheep breeding industry.

[0069] Combined with Example 1 and Comparative Example 2 and with reference to Table 3, it can be seen that the relative weight gain rate measured in Example 1 is higher than that in Comparative Example 2. This is because Comparative Example 2 lacks fermented feed, resulting in a relatively lower content of digestible components in the ewe feed, so the digestion and absorption effect of ewes is relatively poor and the weight gain effect is not obvious.

[0070] Combined with Example 1 and Comparative Examples 3-4 and with reference to Table 3, it can be seen that the relative weight gain rate measured in Example 1 is higher than that in Comparative Examples 3-4. This is because Comparative Examples 3-4 do not achieve the synergistic cooperation of succinic acid and calcium propionate, and cannot synergistically promote the fermentation of food in the ewe's stomach, resulting in a relatively poor digestion and absorption effect of ewes and an unobvious weight gain effect.

[0071] Combined with Example 1 and Comparative Examples 5-7 and with reference to Table 3, it can be seen that when xylo-oligosaccharide, vitamin A sustained-release agent, and tomato pomace are lacking in the concentrate, the weight gain effect of ewes is also relatively poor.

[0072] Combined with Examples 5-11 and with reference to Table 3, it can be seen that when the weight ratio of lecithin to cholesterol is (4-40):1 and the weight ratio of vitamin A to lecithin is 1:(50-125), the weight gain of ewes is more obvious. Among them, when the weight ratio of lecithin to cholesterol is 4:1 and the weight ratio of vitamin A to lecithin is 1:100, the weight gain rate of ewes is relatively high.

[0073] Combined with Example 11, Examples 12-15 and with reference to Table 3, it can be seen that the relative weight gain rates measured in Examples 12-15 are all higher than that in Example 11. This is because during the molding process of the vitamin A sustained-release agent, sucrose can adsorb and deposit on the surface of the vitamin A sustained-release agent, increasing the adhesiveness of the vitamin A sustained-release agent, enabling the vitamin A sustained-release agent to stay in the ewe's digestive tract for a longer time, thereby improving the absorption effect of ewes on vitamin A, promoting the growth of ewes, enabling ewes to maintain an ideal body condition during the lactation period, and being conducive to the efficient development of the sheep breeding industry. When the sucrose concentration in the hydration liquid is 5-15 wt%, it helps to improve the retention effect of the vitamin A sustained-release agent in the ewe's digestive tract, so the relative weight gain rates of Examples 13-15 are higher.

[0074] Combined with Example 15 and Example 16 and in conjunction with Table 3, it can be seen that the relative weight gain rate measured in Example 16 is higher than that in Example 15. This is because after the beet molasses is fermented, it can promote the ewes to ingest protein and improve the deposition of protein, thereby making full use of the high-protein components in the feed and effectively increasing the meat production rate of the ewes.

[0075] Combined with Example 16 and Example 17 and in conjunction with Table 3, it can be seen that the relative weight gain rate measured in Example 17 is higher than that in Example 16. This is because after the expanded straw is further fermented, the organic substances such as protein and fat in the straw are converted from long-chain structures to short-chain structures, which are more easily absorbed by the ewes and help to promote the growth of the ewes.

[0076] The above embodiments are only explanations of the present application, not limitations of the present application. Those skilled in the art can make modifications to the embodiments of the present application without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A ewe feed, characterized in that: The invention comprises the following components in parts by weight: 2.2-2.4 parts of fodder, 0.8-1.0 parts of concentrate, 0.2-0.3 parts of fermented feed, 0.01-0.02 parts of salt, 0.05-0.10 parts of calcium hydrogen phosphate, 0.03-0.05 parts of succinic acid, and 0.006-0.008 parts of calcium propionate. The concentrate comprises the following components in weight percentage: 20-24% of soybean meal, 8-10% of crop by-products, 4-6% of nutritional supplements, 0.10-0.15% of xylo-oligosaccharides, and the remainder is supplemented by corn to 100%; the nutritional supplement comprises a vitamin A sustained-release agent.

2. The ewe feed according to claim 1, characterized in that The vitamin A sustained-release agent is prepared according to the following method: (1) Vitamin A, lecithin, cholesterol and a surfactant are mixed, added into a solvent chloroform and subjected to ultrasonic treatment to obtain a suspension; (2) The suspension is subjected to rotary evaporation to remove the solvent chloroform in the suspension, and then the residue is added to a hydration liquid for magnetic stirring to obtain a vitamin A sustained-release agent; the hydration liquid comprises deionized water.

3. The ewe feed according to claim 2, characterized in that The weight ratio of lecithin to cholesterol is (4-40):

1.

4. The ewe feed according to claim 2, characterized in that The weight ratio of vitamin A to lecithin is 1:(50-125).

5. The ewe feed according to claim 2, characterized in that: The hydration fluid also includes sucrose as a component.

6. The ewe feed according to claim 5, characterized in that The sucrose concentration in the hydration solution is 5-15wt%.

7. The ewe feed according to claim 1, characterized in that The fermented feed is prepared according to the following method: Caragana korshinskii, corn, wheat bran, soybean meal, Pleurotus eryngii bran and rice bran are mixed to obtain a premix, the premix is ​​crushed and added with water and fermentation bacteria to mix well to obtain a mixture, the mixture is put into a fermentation bag for constant temperature fermentation treatment, and fermented feed is obtained after the fermentation is completed.

8. The ewe feed according to claim 7, characterized in that In the method for preparing the fermented feed, the raw materials for preparing the premix further include beet molasses.

9. The ewe feed according to claim 7, characterized in that: In the method for preparing the fermented feed, the raw materials for preparing the premix further include puffed straw.

10. A method for feeding ewes, characterized in that: The following steps are involved: (1) preparing the ewe feed according to any one of claims 1 to 9 for standby use; (2) Ewes are divided according to whether their weight exceeds 40 kg or not. For ewes weighing less than 40 kg, the standard feeding amount is adopted. For ewes weighing more than 40 kg, the feeding amount is increased according to the part of the weight exceeding 40 kg. For every 2.5 kg exceeding 40 kg, the feeding amount is increased by 1% on the basis of the standard feeding amount, and so on. The specific method for determining the standard feeding amount is: if the udder of a single ewe is not red, or the proportion of ewes with red udders in the flock does not exceed 1 / 3, the standard feeding amount is 0.05-0.1 kg / day; if the udder of a single ewe is red, or the proportion of ewes with red udders in the flock exceeds 1 / 3, the standard feeding amount is 0.25-0.5 kg / day; (3) According to the feeding amount determined in step (2), the ewe feed of step (1) is used to feed the postpartum lactating ewe until the lactation period of the ewe ends.

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