allyl Trenbolone 에 의한 미경산돈의 발정 동기화 유기 = Induction of Estrous Synchronization in Gilts by Allyl Trenbolone

다국어 초록 (Multilingual Abstract)

Estrous synchronization was induced using a synthetic progesterone derivative, allyl trenbolone (Regumate porcine), in sexually mature gilts. Gilts were divided into a control group and 2 treatment groups (6-7 gilt per group) fed 20 ㎎ allyl trenbolone in feed/gilt daily for 18 consecutive days (Regumate). Gilts in one of the treatment groups received 2,000 IU PMS and 1,500 IU hCG after the cessation of Regumate (Regumate + PMS + hCG). Estrus was effectively synchronized with apparently no adverse effect in 86% of the treated gilts within 7 days after treatment. The intervals from the cessation of treatment to estrus were 6.1 days with Regumate and 5.1 days with Regumate+PMS+hCG groups, respectively. The average number of ovulated follicles in the gilts of Regumate group was similar to that in control group, and could be increased variably by the additional injections of PMS and hCG. The results suggest that Regumate is effective in inducing estrus synchronization in sexually mature gilts. The additional use of PMS and hCG with Regumate may be useful for the relatively narrow synchronization of estrus and superovulation in gilts.