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Method for improving female animal reproduction performance during timed artificial insemination

A technology of timing insemination of female animals, which is applied in animal delivery, medical science, veterinary instruments, etc., can solve the problems of increased follicle heterogeneity of female animals, disturbed uterine environment, and reduced embryo vitality, and achieves low production costs , Improve reproductive performance, and stabilize chemical properties

Pending Publication Date: 2019-07-30
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the application prospect of FTAI is broad, especially in the stage of structural adjustment, transformation and upgrading of the animal husbandry industry in my country, it is very urgent to popularize and apply this technology under the background of improving production efficiency and accelerating the pace of development of modern animal husbandry, but at the same time, there are still problems in this technology that need to be improved. For example, during the application of FTAI technology, intramuscular injection of pregnant horse serum gonadotropin (PMSG) is required to promote the synchronous development of follicles in female animals, but this hormone will increase the heterogeneity of follicles in female animals and increase the number of ovulations. Decreased embryo viability, no increase in the number of implanted embryos, decreased pregnancy rate, etc. These problems may be due to the disturbance of the intrauterine environment by PMSG, thereby hindering embryo implantation to a certain extent
At present, there is no effective method to alleviate the disturbance of the intrauterine environment caused by PMSG

Method used

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  • Method for improving female animal reproduction performance during timed artificial insemination
  • Method for improving female animal reproduction performance during timed artificial insemination
  • Method for improving female animal reproduction performance during timed artificial insemination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Adding NAC to Feed Combined with Timed Insemination Technology Improves Reproductive Performance of Gilts

[0024] (1) Experimental grouping

[0025] Three experimental groups and one control group were designed as follows:

[0026] test group:

[0027] The concentration of NAC in the diet of sows in the high-dose group was 9g / kg,

[0028] The concentration of NAC in the diet of sows in the middle dose group was 3g / kg,

[0029] The concentration of NAC in the diet of sows in the low dose group was 1g / kg;

[0030] Control group: the sow diet of the control group did not contain NAC;

[0031] Such as figure 1 As shown, the sows that were applied with timed insemination were randomly divided into 4 groups after stopping feeding allyl progesterone, and the above-mentioned 3 test groups and 1 control group were used for feeding; 42 hours after progestin, inject 1000IU PMSG, inject 100μg GnRH after an interval of 80 hours, perform the first breeding after an i...

Embodiment 2

[0046] Example 2 Feed Addition of NAC Combined with Timed Insemination Technology Improves Reproductive Performance of Multiparous Sows

[0047] (1) Experimental grouping

[0048] Three experimental groups and one control group were designed as follows:

[0049] test group:

[0050] The concentration of NAC in the diet of sows in the high-dose group was 18g / kg,

[0051] The concentration of NAC in the diet of sows in the middle dose group was 6g / kg,

[0052] The concentration of NAC in the diet of low-dose sows was 2g / kg;

[0053] Control group: the sow diet of the control group did not contain NAC;

[0054] Such as figure 2 As shown, the sows that were applied with timed insemination were randomly divided into 4 groups 24 hours after the weaning of the multiparous sows, and the above-mentioned 3 test groups and 1 control group were used to feed; 24h, inject 1000IU PMSG, inject 100μg GnRH after an interval of 72h, perform the first mating after an interval of 24h, and con...

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Abstract

The invention relates to the field of animal reproduction, in particular to a method for improving the female animal reproduction performance during timed artificial insemination. Aiming at the problems that the timed artificial insemination is low in pregnancy rate and the like, by adding N-acetylcysteine (NAC) into female animal feed to be combined with the timed artificial insemination, the reproduction performance of the female animals subjected to the timed artificial insemination can be improved, and the mating pregnancy rate of sow is effectively improved. According to research resultsof references, the NAC has the potential to improve the litter size of the female animals subjected to the timed artificial insemination. Besides, the NAC belongs to a small molecule compound, the chemical property is stable, the production cost is low, and by combining the timed artificial insemination in the structural adjustment and transformation upgrading process of Chinese animal husbandry,the application prospect is wide, and the economic benefits are great.

Description

technical field [0001] The invention relates to the field of animal reproduction, in particular to a method for improving the reproductive performance of female animals in the timing insemination technique. Background technique [0002] Fixed-timed artificial insemination (FTAI for short) refers to the use of exogenous reproductive hormones to control the simultaneous estrus and ovulation of female animals without the need for estrus detection on female animals, and to perform artificial insemination on female animals at predetermined time points. Insemination technique. At present, FTAI technology has been initially applied in developed countries such as Europe and the United States, and it is also rapidly promoted in developing countries. Although the application prospect of FTAI is broad, especially in the stage of structural adjustment, transformation and upgrading of the animal husbandry industry in my country, it is very urgent to popularize and apply this technology ...

Claims

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Application Information

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IPC IPC(8): A61D19/00
CPCA61D19/00
Inventor 田见晖秦玉圣王书敏王越安磊郭敏
Owner CHINA AGRI UNIV