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Ultrashort-period synchronous estrus method for sheep

An ultra-short, sheep technology, applied in the field of livestock breeding, can solve the problems of thrombus loss rate and vaginal inflammation, which have not been effectively solved, long embolization time, and short embolization time.

Pending Publication Date: 2021-06-25
HEBEI AGRICULTURAL UNIV.
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method shortens the embolization time from 13 days to 11 days, the embedding time of 11 days is still long, and the problems of thrombus drop rate and vaginal inflammation have not been effectively solved. not too short to imagine

Method used

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  • Ultrashort-period synchronous estrus method for sheep

Examples

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Effect test

Embodiment Construction

[0021] The present invention will be further described through specific examples below. If not specified, the technical means used in the examples are conventional means well known to those skilled in the art.

[0022] 1. Test conditions

[0023] 1.1 Test animals

[0024] Select 72 ewes that are healthy, have good body condition, normal sexual cycle, and no reproductive disorders, weighing (35.16±3.66) kg.

[0025] 1.2 Test drugs and materials

[0026] Vaginal implanted sponge suppository (MAP, produced in Australia), specifications: fluprogesterone 45mg / piece; pregnant horse serum gonadotropin (PMSG, Ningbo Sansheng Biotechnology Co., Ltd.), specification: 1000IU / branch; cloprostinol sodium ( Ningbo Sansheng Biotechnology Co., Ltd.), specification: 0.2mg / bottle. Bolt gun; normal saline; external disinfectant (potassium permanganate or bromogeramine can be used), syringe.

[0027] 1.3 Processing method

[0028] The test period is from November 21, 2020 to December 3, 2020...

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Abstract

The invention discloses an ultrashort-period synchronous estrus method for sheep. The method comprises the following steps: selecting ewes capable of being bred; embedding a progesterone suppository in vaginas of the ewes capable of breeding, and recording the embedding day as the 0th day; carrying out intramuscular injection of cloprostenol sodium on the fourth day; withdrawing the progesterone suppository on the fifth day, and injecting PMSG intramuscularly at the same time; and 12-72 hours after the progesterone suppository is withdrawn, performing estrus test by using rams, and selecting estrus ewes. According to the method, ewes can be bred to have an estrus within 5 days, the embedding time is greatly shortened compared with the previous method that the progesterone suppository needs to be embedded for more than 10 days, the estrus rate is increased, and meanwhile, the suppository falling rate and the vaginitis of the ewes are effectively reduced.

Description

Technical field: [0001] The invention belongs to the technical field of livestock reproduction, and in particular relates to a method for synchronous estrus of sheep with an ultra-short cycle. Background technique [0002] The estrus synchronization technology is a breeding technique that uses exogenous reproductive hormones to regulate the estrus cycle of ewes and make ewes concentrate on estrus in a short period of time. In production, the conventional method of estrus synchronization is to use vaginal sponge suppository or CIDR to embed for 10-14 days, and intramuscularly inject PMSG to each sheep when the suppository is withdrawn. Because progesterone suppositories are embedded for a long time, problems such as high rate of thrombosis and vaginitis are prone to occur. Invention patent application CN 111743661 A discloses a method of inducing estrus synchronism and artificial insemination in batch production of Hu sheep. The fluorine progesterone acetate suppository (FGA...

Claims

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Application Information

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IPC IPC(8): A01K67/02A61D7/00A61D19/00
CPCA01K67/02A61D7/00A61D19/00
Inventor 宋志攀段春辉刘月琴郭云霞张英杰纪守坤严慧
Owner HEBEI AGRICULTURAL UNIV.
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