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Method for increasing sow ovulation rate and injection thereof

A technology of ovulation number and injection, which is applied in the field of agricultural biological products, can solve problems such as easy induction of ovarian cysts, high number of ovulations, and unstable technology, and achieve the effects of improving reproductive performance, high number of ovulations, and stable technology

Inactive Publication Date: 2010-05-26
INST OF ANIMAL SCI & VETERINARY HUBEI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above methods can induce and promote the ovulation of sows and increase the reproductive rate, but there are three defects in these methods: one is that the number of ovulations is only twice the normal amount; Third, it is easy to induce ovarian cysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Within 4-6 days before the sow is in estrus, at the same time, inject PG dose of 0.45mg / head and PMSG dose of 10-12IU / kg respectively. Once estrus is observed, re-inject the equivalent PMSG dose of 1.6-2.2 Double the HCG or inject RHLH-A3 at a dose of 0.2mg / head, start mating 6 hours later, and prepare to take oocytes or embryos.

Embodiment 2

[0015] Within 4-6 days before the sow is in estrus, inject the mixture of PG and PMSG, the dose ratio is PG0.45mg / head and PMSG10-12IU / kg, once the estrus is observed, re-inject the equivalent PMSG dose of 1.6-2.2 Double the HCG or inject RHLH-A3 at a dose of 0.2mg / head, start mating 6 hours later, and prepare to take oocytes or embryos.

Embodiment 3

[0017] At any time before the sexual maturity of the gilt, the above-mentioned method of Example 1 or Example 2 can be used to inject 0.45mg PG / head and 10-12IUPMSG / kg respectively at the same time, or the method of Example 2 to inject PG and PMSG Once estrus is observed, inject HCG equivalent to 1.6-2.2 times the dose of PMSG or inject RHLH-A3 at a dose of 0.2mg / head, and start breeding after 6 hours, and prepare oocytes or embryos .

[0018] It can be seen that adopting the method of the present invention can significantly increase the number of litters of young sows and multiparous sows, and can significantly increase the number of ovulations, oocytes, embryos, and litters of sows, thereby increasing the number of sows. reproductive performance; the invention can also produce more oocytes or embryos for pig fetus transplantation for introduction, production of SPF pigs, or piglet breeding for scientific research or cloning production.

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PUM

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Abstract

The invention relates to a method for increasing sow ovulation rate and injection thereof, belonging to the technical field of agricultural biological products. The method of simultaneously injecting PG (cloprostenol sodium) and PMSG (antostab) or a mixture of PG and PMSG before oestrum, and injecting HCG (chorionic corticotrophin) or LHRH-A3 (luteinizing hormone releasing hormone A3) during oestrum is adopted to promote the ovulation rate of young sows or multiparity sows to be 2-3 times of normal ovulation amount, thus improving reproductive performance of sows and obviously increasing the number of young pigs borne by the sows. The method has stable technology and obvious effect, and can not induce ovarian cyst; by using the method, the same superovulation effect can be achieved on standby sows ay any time before sexual maturity.

Description

technical field [0001] The invention relates to a method for increasing the ovulation number of sows and its injection, which is used to increase the ovulation number, oocyte number, embryo number and litter size of young sows and multiparous sows, thereby improving the reproductive performance of sows , belongs to the technical field of agricultural biological products. technical background [0002] Reproductive performance of sows is an important technical index in the production of breeding pigs. In addition to the long-term program of gradually improving reproductive performance through breeding, generally in order to improve the reproductive performance of sows, various hormone treatments are used to increase the number of ovulations of sows, thereby To achieve the purpose of improving the reproductive performance of sows, the hormones used include PG600 (including PG, PMSG 400IU, HCG 200IU), PMSG, HCG, PG, RHLH-A3, estrogen, etc. The methods of use are as follows: ① Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02A61K38/24A61K31/5575A61P15/08
Inventor 郑新民华文君肖红卫李莉乔宪凤魏庆信田永祥程妮周荆荣刘西梅张立苹华再东
Owner INST OF ANIMAL SCI & VETERINARY HUBEI ACADEMY OF AGRI SCI
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