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A method for improving reproductive performance of sows by adding proanthocyanidins to diet

A technology of proanthocyanidins and reproductive performance, which is applied in the direction of additional food elements, animal feed, application, etc., to achieve great promotion and application value, increase litter size, and improve litter performance

Active Publication Date: 2022-04-08
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report about proanthocyanidins improving the reproductive performance of sows in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The basic diet was fed to the sows according to the conventional method, and each pig was fed 2 kg each time. According to the ratio of 100mg / 2kg (low dose group), the proanthocyanidins were added to the conventional basal diet of sows, mixed evenly, and then fed. Feed on time at 7:00 every morning, and continue to add regular basic rations at 3:00 pm. Continuous feeding was carried out from the middle and late stages of lactation (2 weeks before weaning) to estrus after weaning (2 weeks after weaning), and the feeding continued for 4 weeks. Keep the temperature in the house suitable, ventilate and take a breath, and clean it in time.

[0020] Proanthocyanidins were purchased from Tianjin Jianfeng Natural Products Research and Development Co., Ltd., and the appearance of feeding was reddish-brown powder with a purity of ≥95%.

Embodiment 2

[0022] The basic diet was fed to the sows according to the conventional method, and each pig was fed 2 kg each time. According to the ratio of 200mg / 2kg (high-dose group), proanthocyanidins were added to the conventional basal diet of sows, mixed evenly, and then fed. Feed on time at 7:00 every morning, and continue to add regular basic rations at 3:00 pm. Continuous feeding was carried out from the middle and late stages of lactation (2 weeks before weaning) to estrus after weaning (2 weeks after weaning), and the feeding continued for 4 weeks. Keep the temperature in the house suitable, ventilate and take a breath, and clean it in time.

[0023] Proanthocyanidins were purchased from Tianjin Jianfeng Natural Products Research and Development Co., Ltd., and the appearance of feeding was reddish-brown powder with a purity of ≥95%.

Embodiment 3

[0025] The basic diet was fed to the sows according to the conventional method, and each pig was fed 2 kg each time. According to the ratio of 150mg / 2kg, the proanthocyanidins were added to the conventional basal diet of sows, mixed evenly, and then fed. Feed on time at 7:00 every morning, and continue to add regular basic rations at 3:00 pm. Continuous feeding was carried out from the middle and late stages of lactation (2 weeks before weaning) to estrus after weaning (2 weeks after weaning), and the feeding continued for 4 weeks. Keep the temperature in the house suitable, ventilate and take a breath, and clean it in time.

[0026] Proanthocyanidins were purchased from Tianjin Jianfeng Natural Products Research and Development Co., Ltd., and the appearance of feeding was reddish-brown powder with a purity of ≥95%.

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PUM

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Abstract

The invention belongs to the field of feed additives and discloses a method for improving the reproductive performance of sows by adding proanthocyanidins to diets. From mid-late lactation (2 weeks before weaning) to estrus after weaning (2 weeks after weaning), adding 150-300 mg / day of proanthocyanidins to the basic diet can significantly increase the litter size and birth weight of sows . For pig farms with low litter size and more adverse environmental stress, adding proanthocyanidins to the diet can significantly improve the farrowing performance of sows; for pig farms with high litter performance, adding proanthocyanidins to the diet can still Effectively increase litter size. The test cost of this technology is less than 1,000 yuan per 100 litters, and the increase in litter size is between 35-145 pigs. Therefore, this technology has great promotion and application value in pig farms with good and poor litter sizes.

Description

technical field [0001] The invention belongs to the field of feed additives, and in particular relates to a method for improving the reproductive performance of sows by adding proanthocyanidins to diets. Background technique [0002] In pig production, the most important factor that determines the production level and economic benefits of a pig farm is the reproductive performance of sows. However, due to changes in the environment, feed, management and other factors, sows are subject to greater environmental stress, and are prone to miscarriage, stillbirth, and mummified fetuses during production, which in turn leads to a reduction in sow litter size, which greatly affects the Productivity in pig farming. Therefore, how to improve the reproductive performance of sows has become an urgent problem to be solved in pig production. Studies have shown that adding certain functional substances to the feed can improve the reproductive performance of sows. However, in the prior a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K50/30A23K20/105
CPCA23K20/105A23K50/30
Inventor 刘红林申明吴望军
Owner NANJING AGRICULTURAL UNIVERSITY
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