Superovulatory Responses in Japanese Black Beef Cows Following Largest Follicle Aspiration or Human Chorionic Gonadotrophin (hCG) Treatment

Journal of Veterinary Medical Science

Nobuyuki KOYAMA¹  Takeshige OTOI¹  Susumu TACHIKAWA¹  Ken YAMAMOTO¹  Tatsuyuki SUZUK² 

[1] Tokushima Prefectural Beef Cattle and Swine Experiment Station;Department of Veterinary Sciences, Yamaguchi University

关键词: follicle aspiration;    hCG;    superovulation;   

DOI  :  10.1292/jvms.60.961

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(18)The effect of largest follicle aspiration or hCG administration before induction of superovulation on the ovarian response of Japanese Black beef cows was investigated using a crossover design in which induction of superovulation was attempted in every cow. The superovulatory response of cows whose largest follicle had been aspirated from the ovaries by ultrasound-guided follicular aspiration 1 day before induction of superovulation, did not differ from the response in non-treated control cows. In contrast, in cows given 5,000 IU of hCG 3 days before induction of superovulation, the proportions of fertilized ova and transferable embryos significantly decreased compared with the other groups.

【 授权许可】

Unknown