Method for improving reproductive performance of mammals after pregnancy by oral administration of melatonin

A technology for mammals and reproductive performance, which is applied in animal husbandry and other fields, can solve problems such as the urgent need to increase the number of pigs on hand and the number of slaughtered pigs, and achieve the effects of improving reproductive performance, weaning weight, and birth weight

Pending Publication Date: 2020-05-22
CHINA AGRI UNIV
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  • Abstract
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Problems solved by technology

However, due to the influence of environment, nutrition, genetics, stress and other factors, the num

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  • Method for improving reproductive performance of mammals after pregnancy by oral administration of melatonin
  • Method for improving reproductive performance of mammals after pregnancy by oral administration of melatonin

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Embodiment Construction

[0019] The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

[0020] The reagents and materials used in the following examples are commercially available. Melatonin (MT) used was purchased domestically.

[0021] 1. Experimental animals and diet

[0022] Experiment 1: About 284 healthy Large White, Changbai and Duroc hybrid sows were selected as test animals. In the case of high temperature and humidity in summer (slight heat stress), healthy pregnant sows were selected and evenly distributed into pig houses with the same conditions. . The feeding gun was fed with melatonin, and the feeding time was from the 8th day of pregnancy to the 92nd day of pregnancy. The sows were fed with the same feed, and all sows had free access to drinking water. On the 107th day of gestation, all sows were cleaned and disinfected and transferred to the farrowing room, where they were reared in the farrowing pen. After del...

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Abstract

The present invention provides a method for improving reproductive performance of mammals after pregnancy by oral administration of melatonin. In the method, the melatonin is added to feeds or drinking water of the mammals, thereby reducing heat stress of pregnant mammals, improving feed intake of the pregnant mammals and achieving a purpose of improving the reproductive performance of the pregnant mammals. The method can increase the number of live births of pregnant sows by 0.5-1, improves average birth weight by 0.1-0.31 kg/one, improves average weaning weight by 0.16-1 kg/one, improves slaughter rate of live pigs, avoids problems of veterinary drug residues, drug withdrawal periods, etc., is safe and effective, ultimately improves production benefits of pig breeding industry and provides a useful reference for further research on improving reproductive performance of the sows.

Description

technical field [0001] The invention belongs to the field of agricultural animal husbandry and veterinary medicine, and in particular relates to a method for improving reproductive performance of pregnant mammals by taking melatonin orally. Background technique [0002] my country is a country with a large population, and there is a great demand for meat products. Among them, pork is the main meat consumed by Chinese residents. However, due to the influence of environment, nutrition, genetics, stress and other factors, the number of live pigs in my country and the number of slaughtered pigs still need to be improved urgently. In 2017, the annual number of pigs slaughtered in my country was about 680 million, while the number of sows on hand has dropped to 34.66 million. The average number of sows slaughtered is only 20, and the actual number of sows born alive is far from reaching. The main reason is that the stress (heat stress) caused by environmental factors to the sow ...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 刘国世张鲁朱天奇刘吉平张珍珍王静宋玉坤姬鹏云王业华王义敏
Owner CHINA AGRI UNIV
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