CAJ | 학술논문

在青海省大通种牛场育种一队对27头秋季断犊母牦牛进行了促发情试验。母牦牛断犊并经21-23d恢复饲养后,采用两次PG注射法和GnRH＋PG注射法对母牦牛进行同期发情处理,结果显示：试验I组母牦牛发情6头,发情率66.67%,试验II组母牦牛发情2头,发情率22.22%。经统计分析,试验I组与试验II组母牦牛之间发情率差异不显著（P﹥0.05）,但显著高于对照组（P﹤0.05）,试验II组母牦牛发情率与对照组间差异不显著（P﹥0.05）。
재청해성대통충우장육충일대대27두추계단독모모우진행료촉발정시험。모모우단독병경21-23d회복사양후,채용량차PG주사법화GnRH＋PG주사법대모모우진행동기발정처리,결과현시：시험I조모모우발정6두,발정솔66.67%,시험II조모모우발정2두,발정솔22.22%。경통계분석,시험I조여시험II조모모우지간발정솔차이불현저（P﹥0.05）,단현저고우대조조（P﹤0.05）,시험II조모모우발정솔여대조조간차이불현저（P﹥0.05）。
27 weaning female yaks were conducted for estrus in Datong breeding cattle farm, Qinghai Weaning female yaks were weaned for 21 - 23d, after recoverd ,the synchronous estrus was conducted by P G injection and GnRH ＋ PG injection. The results that 6 female yaks was estrus in group I,estrus rate is 66.6% ;2 female yaks was estrus in group Ⅱ, estrus rate is 22.22%. There is no significant difference between group I and group Ⅱ （ P 〉 0.05 ）. but there is significant diffevence between group I and control group （ P 〈 0.05）. there is no significant difference between group ⅡI and control group.