【摘要】 应用生殖激素处理诱导牦牛同期发情 ,结果表明 :LRH -A3 +PMSG和PG -CL +FSH处理的试验母牦牛 96h以内的发情率分别达 83 3 3 %和 73 3 3 %,极显著地高于未处理的对照牛(2 0 0 0 %) (P <0 0 1 ) ,两试验组之间差异不显著 (P >0 0 5 ) ;不同繁殖类型母牦牛外周血浆P4和 1 7β -E2 含量的测定结果 :牙日玛母牦牛外周血浆P4 和 1 7β -E2 的含量略高于青麻和干巴母牦牛 (P >0 0 5 )。更多还原

【Abstract】 The experiment of inducting synchronization of oestrus was conducted in Yaks using reproductive hormone. The result showed that the rates of synchronization of oestrus during the period of 96 hours in the LRH-A 3+PMSG group and PG-CL+FSH group were 83.33% and 73.44% respectively. They were significantly higher than that in the control group (20.00%)(P<0.01), and there were slightly different between the two treated groups (P>0.05).The content of P 4 and 17β-E 2 in plasma were determined in Yaks of different reproductive types .The results showed the content of P 4 and 17β-E 2 in plasma in Yaks were slightly higher than that of the Qingma and Ganba Yaks (P>0.05).更多还原