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Synchronization of Estrus in sheep in Different Seasons

Agricultural Biotechnology 2018年第3期7卷 92-94页

作者： Yun ZHOU Dayong CHEN Amina ABUDUWALI Liqin WANG Huangqiao Animal Epidemic Prevention Station Agricultural Bureau of Xiangcheng DistrictSuzhou City Inner Mongolia Sino sheep Breeding Co. Ltd. Key Laboratory of Grass Livestock Reproduction & Breed Biotechnology Ministry of Agriculture

[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

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