Synchronization of Estrus in Sheep in Different Seasons  

作　　者：Yun ZHOU Dayong CHEN Amina ABUDUWALI Liqin WANG 

机构地区：[1]Huangqiao Animal Epidemic Prevention Station,Agricultural Bureau of Xiangcheng District,Suzhou City [2]Inner Mongolia Sino Sheep Breeding Co.,Ltd. [3]Key Laboratory of Grass Livestock Reproduction & Breed Biotechnology,Ministry of Agriculture

出　　处：《Agricultural Biotechnology》2018年第3期92-94,共3页农业生物技术（英文版）

基　　金：Supported by Nonprofit Institute Research Grant of Autonomous Region(KY2017008);Guiding Fund Project for Scientific and Technological Innovation in Inner Mongolia Autonomous Region;Meat Sheep Industry Engineering Technology Research Center of Inner Mongolia Autonomous Region;Dorper×Mongolia Sheep Breeding and Industrialization

摘　　要：[Objectives] The aim was to improve and stabilize the estrus synchronization of local sheep in Xinjiang during the breeding season and non-breeding season. [Methods]The data of estrus rate and estrus concentration time were analyzed by different hormone treatment programs. [Results]eding season,whether PMSC was used did not affect the estrus of sheep when sponge and PG were used（ P 〉 0. 05）. Estrus was concentrated in 36-48 h after sponge plugs were removed,and the estrus rate in this period accounted for 74. 19% of the total. In non-breeding season,the estrus rate in the sponge plug plus PGF treatment was only56. 12%,significantly lower than that（ 90. 43%） in the sponge plug plus PG plus PMSG treatment（ P 〈 0. 01）. The estrus was also concentrated in 36-48 h after sponge plugs were removed. The estrus rate at this stage was 67. 42%,accounting for 82. 8% of the total. In breeding season,the estrus rate in sheep injected with333 IU of PMSG（ 81. 96%） was significantly lower than those of sheep injected with 500（ 90. 25%） and 750 IU（ 95. 3%）（ P 〈 0. 05）. [Conclusions] This study provides a theoretical basis for the production enterprises to save a lot of manpower and material resources.[Objectives] The aim was to improve and stabilize the estrus synchronization of local sheep in Xinjiang during the breeding season and non-breeding season. [Methods]The data of estrus rate and estrus concentration time were analyzed by different hormone treatment programs. [Results]eding season,whether PMSC was used did not affect the estrus of sheep when sponge and PG were used（ P 〉 0. 05）. Estrus was concentrated in 36-48 h after sponge plugs were removed,and the estrus rate in this period accounted for 74. 19% of the total. In non-breeding season,the estrus rate in the sponge plug plus PGF treatment was only56. 12%,significantly lower than that（ 90. 43%） in the sponge plug plus PG plus PMSG treatment（ P 〈 0. 01）. The estrus was also concentrated in 36-48 h after sponge plugs were removed. The estrus rate at this stage was 67. 42%,accounting for 82. 8% of the total. In breeding season,the estrus rate in sheep injected with333 IU of PMSG（ 81. 96%） was significantly lower than those of sheep injected with 500（ 90. 25%） and 750 IU（ 95. 3%）（ P 〈 0. 05）. [Conclusions] This study provides a theoretical basis for the production enterprises to save a lot of manpower and material resources.

关 键 词：Altay sheep Estrus synchronization Estrus rate Breeding season Non-breeding season 

分 类 号：S826[农业科学—畜牧学]