Breeding method of lactating sows
By adding N-acetylglycine and L-lactyl lysine to the basal diet of lactating sows, combined with free access to water and environmental control, the problems of backfat loss and weight loss in sows were solved, reproductive performance was improved and costs were reduced.
Patent Information
- Application Number
- CN202511477875.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-12-16
AI Technical Summary
In existing technologies for feeding lactating sows, the loss of backfat and body weight leads to a decline in physical condition, reduced disease resistance and milk nutrition, which affects reproductive performance and increases feed costs.
The basal diet was mixed with N-acetylglycine (an amino acid acetylation modifier) and L-lactylated lysine (an amino acid lactation modifier). The lactating diet was fed with free access to water and gradually replaced with the basal diet before weaning, while controlling the ambient temperature and humidity.
It effectively reduces backfat and weight loss in lactating sows, improves reproductive performance, reduces breeding costs, and is simple and easy to implement.
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Figure SMS_1
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to an animal feeding method, in particular to a method for feeding a lactating sow. BACKGROUND
[0002] In order to secrete milk, a lactating sow will consume the back fat, especially in the early lactation period, the sow's milk secretion is large, which will cause the back fat thickness to decrease significantly, and the weight loss is more. The decrease of back fat thickness and body weight will make the sow's body weak, reduce the disease resistance, and at the same time reduce the content of milk nutrients and disease resistance factors, which will cause the piglets to easily produce intestinal inflammation and reduce the survival rate. In addition, excessive reduction of back fat thickness and body weight will also directly affect the ovulation and estrus of the sow after weaning, and reduce the reproductive performance of the sow.
[0003] In order to reduce the weight loss of the lactating sow, the existing feeding method will increase the fat and protein content in the feed, although it can partially alleviate the weight loss, but the feed cost is greatly increased, and the breeding cost is increased. In addition, this method is also limited by the absorption capacity of the sow to fat and protein, and the sow with low feed conversion rate will further increase the breeding cost. Therefore, how to feed the lactating sow to improve its reproductive performance has become a technical problem to be solved. SUMMARY
[0004] The purpose of the present application is to provide a method for feeding a lactating sow, which solves the problem of how to reduce the back fat thickness and weight loss of the lactating sow.
[0005] The technical scheme of the present application is a method for feeding a lactating sow, comprising the following steps: (1) mixing amino acid acetylated modifier and amino acid lactic acidified modifier in the basic diet to obtain lactation diet; (2) feeding with lactation diet under the condition of free drinking water, increasing the feeding amount daily from the first day after delivery until free feeding; (3) starting to decrease the feeding amount three days before weaning and gradually replacing the lactation diet with the basic daily diet, and completely feeding with the basic daily diet after weaning; (4) the temperature of the feeding environment is 18-26℃, and the humidity is not more than 80%. Preferably, the amino acid acetylated modifier is N-acetylglycine, and the amino acid lactic acidified modifier is L-lactylated lysine.
[0006] Preferably, the mass ratio of the amino acid acetylated modifier and the amino acid lactic acidified modifier is 1-5:1-5.
[0007] Preferably, the incorporation amount of the amino acid acetylation modifier is 0.5-2.5‰ of the weight of the basic daily ration, and the incorporation amount of the amino acid lactic acidification modifier is 0.5-2.5‰ of the weight of the basic daily ration.
[0008] Preferably, the lactation daily ration is prepared as follows: N-acetyl glycine and L-lactic acidified lysine are dissolved in water to obtain a modified amino acid solution; the basic daily ration is mixed with the modified amino acid solution at a material-liquid ratio of 1:0.5-0.7 to obtain the lactation daily ration.
[0009] Preferably, the basic daily ration comprises the following components by weight: 63-67 parts of corn, 25-31 parts of soybean meal, 2-3 parts of soybean oil, 0.4-0.8 parts of calcium carbonate, 1-2 parts of calcium hydrogen phosphate, 0.2-0.4 parts of sodium chloride, 0.05-0.07 parts of egg methionine, 0.07-0.13 parts of lysine, 0.3-0.7 parts of vitamin premix, and 0.3-0.7 parts of trace element premix.
[0010] Preferably, the vitamin premix comprises retinyl acetate, cholecalciferol, tocopherol, menadione, thiamine, riboflavin, pantothenic acid, pyridoxal, nicotinic acid, biotin, folic acid, cyanocobalamin, and choline chloride. The trace element premix comprises ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate, and potassium iodide.
[0011] Preferably, in step (2), the method of feeding with the lactation daily ration is as follows: the feeding amount on the first day after delivery is 0.4-0.6 kg / day, and then the feeding amount is increased by 0.4-0.6 kg per day until the feeding amount reaches 5-9 kg / day, which is fed 3-8 times per day; after maintaining for 2-3 days, the feeding amount is changed to free feeding. Preferably, in step (3), the method of reducing the feeding amount is as follows: the feeding amount is reduced by 1-2 kg per day from 5-9 kg / day to 2-3 kg / day.
[0012] Preferably, in step (3), the method of gradually replacing the lactation daily ration with the basic daily ration is as follows: on the first day, 20-30% of the lactation daily ration is replaced with the basic daily ration, on the second day, 50-60% of the lactation daily ration is replaced with the basic daily ration, and on the third day, 80-90% of the lactation daily ration is replaced with the basic daily ration.
[0013] Beneficial effects: Compared with the prior art, the present application has the following obvious advantages: The present application can effectively reduce the backfat and body weight loss of sows during lactation, improve the breeding performance of sows, and reduce the breeding cost by adding N-acetyl glycine and L-lactic acidified lysine in the basic daily ration, and the method is simple and easy to implement, and has good application prospect. DETAILED DESCRIPTION
[0014] The technical solutions of the present application are further described below.
[0015] Example 1: A method for feeding a lactating sow is as follows: (1) Dissolve N-acetylglycine of 1.2‰ weight of the basal diet and L-lactylated lysine of 1.5‰ weight of the basal diet in water to obtain a modified amino acid solution; mix the basal diet with the modified amino acid solution at a material-liquid ratio of 1:0.6 to obtain a lactation diet. The basal diet is composed of the following components in weight parts: 65 parts of corn, 28 parts of soybean meal, 2.5 parts of soybean oil, 0.6 parts of calcium carbonate, 1.5 parts of calcium hydrogen phosphate, 0.3 parts of sodium chloride, 0.06 parts of methionine, 0.1 parts of lysine, 0.5 parts of vitamin premix, and 0.5 parts of trace element premix.
[0016] The addition amount of vitamins in each kilogram of the complete feed is: acetate retinol 10000IU, cholecalciferol 2500IU, dl-alpha-tocopheryl acetate 50IU, menadione 5mg, thiamine 2mg, riboflavin 5mg, pantothenic acid 12mg, pyridoxine 10mg, nicotinic acid 30mg, D-biotin 0.2mg, folic acid 1.5mg, cyanocobalamin 0.05mg, and choline chloride 1500mg; The addition amount of trace elements in each kilogram of the complete feed is: FeSO4·7H2O 498mg, CuSO4·5H2O 78.7mg, MnSO4·5H2O 110mg, ZnSO4·7H2O 440mg, yeast selenium 0.66mg, and KI 0.4mg.
[0017] (2) The sow is fed with the lactation diet under the condition of free drinking water, is not fed on the day of delivery, the feeding amount on the first day after delivery is 0.5kg / day, then increases by 0.5kg per day until the feeding amount reaches 8kg / day, which is fed 5 times a day; after maintaining for 2 days, it is changed to free feeding; (3) The feeding amount is decreased by 1.8kg per day to 2.6kg per day for three days before weaning, and at the same time, 25% of the lactation diet is replaced by the basal diet on the first day, 55% of the lactation diet is replaced by the basal diet on the second day, and 85% of the lactation diet is replaced by the basal diet on the third day. After weaning, the sow is completely fed with the basal diet; (4) The temperature of the feeding environment is controlled at about 22℃, and the humidity is not more than 80%. Example 2: A method for feeding a lactating sow is as follows: (1) the modified amino acid solution is obtained by dissolving N-acetyl glycine of 0.5‰ of the weight of the basal diet and L-lactylated lysine of 2.5‰ of the weight of the basal diet in water; the lactation diet is obtained by mixing the basal diet and the modified amino acid solution at a material-liquid ratio of 1:0.5. 63 parts of corn, 25 parts of soybean meal, 2 parts of soybean oil, 0.4 parts of calcium carbonate, 1 part of calcium hydrogen phosphate, 0.2 parts of sodium chloride, 0.05 parts of methionine, 0.07 parts of lysine, 0.3 parts of vitamin premix, and 0.3 parts of trace element premix.
[0018] The addition amount of vitamins in each kilogram of the complete feed is: acetate retinol 10000IU, cholecalciferol 2500IU, dl-alpha-tocopheryl acetate 50IU, menadione 5mg, thiamine 2mg, riboflavin 5mg, pantothenic acid 12mg, pyridoxine 10mg, nicotinic acid 30mg, D-biotin 0.2mg, folic acid 1.5mg, cyanocobalamin 0.05mg, and choline chloride 1500mg. The addition amount of trace elements in each kilogram of the complete feed is: FeSO4·7H2O 498mg, CuSO4·5H2O 78.7mg, MnSO4·5H2O 110mg, ZnSO4·7H2O 440mg, yeast selenium 0.66mg, and KI 0.4mg.
[0019] (2) The lactating sow is fed with the lactation diet under the condition of free drinking water, is not fed on the day of delivery, the feeding amount on the first day after delivery is 0.4kg / day, then is increased by 0.4kg per day until the feeding amount reaches 5kg / day, and is fed three times a day; after maintaining for two days, the sow is changed to free feeding; (3) The feeding amount is decreased by 1kg per day to 2kg per day from 5kg per day starting from three days before weaning, meanwhile, 20% of the lactation diet is replaced by the basal diet on the first day, 50% of the lactation diet is replaced by the basal diet on the second day, and 80% of the lactation diet is replaced by the basal diet on the third day. After weaning, the sow is completely fed with the basal diet; (4) The temperature of the feeding environment is controlled at about 18℃, and the humidity is not more than 80%. Example 3: A method for feeding a lactating sow is as follows: (1) the modified amino acid solution is obtained by dissolving N-acetyl glycine of 0.5‰ of the weight of the basal diet and L-lactylated lysine of 2.5‰ of the weight of the basal diet in water; the lactation diet is obtained by mixing the basal diet and the modified amino acid solution at a material-liquid ratio of 1:0.5. 67 parts of corn, 31 parts of soybean meal, 3 parts of soybean oil, 0.8 parts of calcium carbonate, 2 parts of calcium hydrogen phosphate, 0.4 parts of sodium chloride, 0.07 parts of methionine, 0.13 parts of lysine, 0.7 parts of vitamin premix, and 0.7 parts of trace element premix.
[0020] The addition amount of vitamins in each kilogram of the complete feed is: retinol acetate 10000IU, cholecalciferol 2500IU, dl-alpha-tocopheryl acetate 50IU, menadione 5mg, thiamine 2mg, riboflavin 5mg, pantothenic acid 12mg, pyridoxine 10mg, nicotinic acid 30mg, D-biotin 0.2mg, folic acid 1.5mg, cyanocobalamin 0.05mg, choline chloride 1500mg; The addition amount of trace elements in each kilogram of the complete feed is: FeSO4·7H2O 498mg, CuSO4·5H2O 78.7mg, MnSO4·5H2O 110mg, ZnSO4·7H2O 440mg, selenium yeast 0.66mg, KI 0.4mg.
[0021] (2) The lactating sow is fed with the lactation diet under the condition of free drinking water, is not fed on the day of delivery, the feeding amount on the first day after delivery is 0.6kg / day, and then is increased by 0.6kg per day until the feeding amount reaches 9kg / day, which is fed 8 times per day; after maintaining for 3 days, it is changed to free feeding; (3) The feeding amount is decreased by 2kg to 3kg per day from 9kg per day for three days before weaning, and at the same time, 30% of the lactation diet is replaced by the basic diet on the first day, 60% of the lactation diet is replaced by the basic diet on the second day, and 90% of the lactation diet is replaced by the basic diet on the third day. After weaning, the sow is completely fed with the basic diet; (4) The temperature of the feeding environment is controlled at about 26℃, and the humidity is not more than 80%. Comparative Example 1: The rest are the same as Example 1, except that: N-acetyl glycine is replaced by glycine.
[0022] Comparative Example 2: The rest are the same as Example 1, except that: L-lactylated lysine is replaced by lysine.
[0023] Comparative Example 3: The rest are the same as Example 1, except that: L-lactylated lysine is replaced by N-acetyl lysine.
[0024] Comparative Example 4: The rest are the same as Example 1, except that: N-acetyl glycine is not added to the basic diet.
[0025] Comparative Example 5: The rest is the same as Example 1, except that: L-lactylated lysine is not added in the basal diet.
[0026] Comparative Example 6: The rest is the same as Example 1, except that: The lactation diet is not used, and the whole process is fed with the basal diet.
[0027] Healthy, similar weight, and 85-day pregnant primiparous sows are selected, and the methods in Examples 1-3 and Comparative Examples 1-6 are used for feeding until the piglets are weaned at 28 days after delivery, with 10 pigs in each group. The backfat thickness and body weight of the sows at 85 days of pregnancy and at 28 days after delivery are measured, and the difference between the two measurements is the loss amount of backfat and body weight, and the results are as follows: Table 1 Effects of different feeding methods on sows during lactation
[0028] As can be seen from the results in Table 1, the present application can significantly reduce the loss of backfat and body weight of sows during lactation compared to Comparative Example 6 (i.e., the basal diet group), but in Comparative Examples 4 and 5, when L-lactylated lysine or N-acetylglycine is used alone, not only does it fail to significantly reduce the loss of backfat and body weight, but it also has a tendency to expand the loss of backfat and body weight, but this expansion effect is not significant. In Comparative Examples 1-2, when L-lactylated lysine or N-acetylglycine is replaced by unmodified natural amino acids, the loss of backfat and body weight only shows a small decrease, and there is no significant difference compared to Comparative Example 6, indicating that L-lactylated lysine and N-acetylglycine have a dependent relationship, and the absence of one cannot achieve good feeding effect. Comparative Example 3 shows that when the modification method of lysine is changed, it significantly expands the loss of backfat and body weight, indicating that the wrong modification of a specific amino acid will have a negative effect and is not suitable for the feeding of sows during lactation.
Claims
1. A method for feeding lactating sows, characterized in that, Includes the following steps: (1) An amino acid acetylation modifier and an amino acid lactation modifier were added to the basal diet to obtain a lactation diet; (2) Under free access to water, lactation diets are used, and the amount of feed is increased daily from the first day after birth until free access to food is achieved; (3) Three days before weaning, gradually reduce the amount of feed and gradually replace the lactation diet with the basic diet. After weaning, feed the basic daily diet completely. (4) The temperature of the breeding environment should be 18-26℃ and the humidity should not exceed 80%.
2. The method for feeding lactating sows according to claim 1, characterized in that, The amino acid acetylation modifier is N-acetylglycine, and the amino acid lactation modifier is L-lactyl lysine.
3. The method for feeding lactating sows according to claim 1, characterized in that, The mass ratio of the amino acid acetylated modifier to the amino acid lactation modifier is 1-5:1-5.
4. The method for feeding lactating sows according to claim 1, characterized in that, The amount of the amino acid acetylated modifier incorporated is 0.5-2.5‰ of the basal diet weight, and the amount of the amino acid lactation modifier incorporated is 0.5-2.5‰ of the basal diet weight.
5. The method for feeding lactating sows according to claim 1, characterized in that, The lactation diet was prepared according to the following method: N-acetylglycine and L-lactyl lysine were dissolved in water to obtain a modified amino acid solution; the basal diet and the modified amino acid solution were mixed at a feed-to-liquid ratio of 1:0.5-0.7 to obtain a lactating diet.
6. The method for feeding lactating sows according to claim 1, characterized in that, The basal diet comprises the following components in parts by weight: 63-67 parts corn, 25-31 parts soybean meal, 2-3 parts soybean oil, 0.4-0.8 parts calcium carbonate, 1-2 parts dicalcium phosphate, 0.2-0.4 parts sodium chloride, 0.05-0.07 parts methionine, 0.07-0.13 parts lysine, 0.3-0.7 parts vitamin premix, and 0.3-0.7 parts trace element premix.
7. The method for feeding lactating sows according to claim 6, characterized in that, The vitamin premix contains retinol acetate, cholecalciferol, tocopherol, menadione, thiamine, riboflavin, pantothenic acid, pyridoxine, niacin, biotin, folic acid, cyanocobalamin, and choline chloride. The trace element premix contains ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate, yeast selenium, and potassium iodide.
8. The method for feeding lactating sows according to claim 1, characterized in that, In step (2), the method of feeding with lactation diet is as follows: the feeding amount on the first day after delivery is 0.4-0.6 kg / day, and then increases by 0.4-0.6 kg / day until the feeding amount reaches 5-9 kg / day, and is fed 3-8 times a day; after maintaining this for 2-3 days, it is changed to free feeding.
9. The method for feeding lactating sows according to claim 1, characterized in that, In step (3), the method of reducing the feeding amount is as follows: the feeding amount is reduced from 5-9 kg / day to 2-3 kg / day by 1-2 kg / day.
10. The method for feeding lactating sows according to claim 1, characterized in that, In step (3), the method of gradually replacing the lactation diet with the basal diet is as follows: on the first day, 20-30% of the lactation diet is replaced with the basal diet; on the second day, 50-60% of the lactation diet is replaced with the basal diet; and on the third day, 80-90% of the lactation diet is replaced with the basal diet.