Animal Husbandry and Feed Science ›› 2017, Vol. 38 ›› Issue (1): 32-32.doi: 10.12160/j.issn.1672-5190.2017.01.011

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Analysis of Embryo Transfer Efficiency in Ordos Fine Wool Sheep

TAO Sarula1, LI Chun-sheng1, Wuliji1, XIE Jun1, HE Tuoya1, MA Li-mei1, Mandula2, LANG Teng2, LEI Dian- wang3, ZUO Sheng-yu3, HE Yun-mei4 (1.Livestock Improvement Working Station of Ordos City,Dongsheng District 017010,China;2.Bureau of Agricultural and Animal Husbandry of Wushen Banner,Wushen Banner 017300,China;3.Ordos Aoheng Fine Wool Sheep Breeds Co.,Ltd., Wushen Banner 017300, China ;4. Livestock Improvement Working Station of Otog Banner, Otog Banner 016100, China)   

  • Online:2017-01-20 Published:2017-01-20

Abstract: In order to solve the problem that breeds of good quality fine wool sheep are scarce and to develop an efficient and rapid propagation technology, Ordos Fine Wool Sheep (n=55) and Mongolian Sheep (n=36) were selected as donors and receptors respectively to evaluate the efficiency of embryo transfer experiment. The donors were subjected to super-ovulation by multiple injections of FSH with diminishing dosages. After the treatment of synchronous estrus, super-ovulation and artificial insemination, the embryos of donors were recovered from uterine horn by surgery. The embryos were flushed twice for 36 of the 55 donors. The recovered embryos were identified and were then transferred into the receptors. The results showed that a total of 788 embryos were recovered and 479 of them are available; the average number of recovering embryos for each donor was 8.66, the average number of available embryos for each donor was 5.26, and the available embryos rate was 60.79%. A total of 290 receptors were pregnant, indicating that the conception rate was 61.83% (290/469); a total of 253 iambs were obtained, indicating that the reproductive rate was 53.94% (253/469).

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