青海毛肉兼用半细毛羊同期发情及提高受胎率的试验（二）

采用不同生殖激素在９７３只青海志肉兼用半细毛羊中进行同期发情和提高受胎率试验。结果表明：①５ｄ和１０ｄ内的同期发情率，总受胎率在Ｐ４＋ＰＭＳＧ组分别为７６．３２％，９７．３６％和９４．７４％；Ｐ４＋ＩＣＩ８０９９６组为９０．０％，１００％和１００％；ＰＭＳＧ组为６３．１６％，９５．７９％和９４．７４％；ＩＣＩ８０９９６组为８２．９１％，９５．５８％和９４．９３％，同期发情效果均显著或极显著高于对照

Experiment of Synchronization of Estrus and Improvement of Conception Rate in Qinghai semifinewool Sheep of Wool meat Dual purpose

An experiment of synchronization of estrus and improvement of conception rate was conducted in 973 Qinghai semifinewool sheep,of wool meat dual purpose using different reproductive hormone.The results were as follows:(1)The rate of the synchronization of estrus during the period of 5 days and 10 days and the total conception rete in the groups treated using P PMSG were 76.32%,97.36% and 94.75% resp,90.0% ,100% and 100% in the group treated using P 4 ICI80996 resp ;63.16%,95.79% and 94.74% in the group treated using PMSG resp;82.91%,95 57% and 94.93% in the group treated using ICI80996 resp.The effects of synchronization of estrus in the treated groups were very significantly or significantly better than that in the control group(47.33%,76.00% and 88.67%),There was no significant difference in the total conception rate between the treated groups and control group.(2)The first non return rate and the total conception rate in the LRH A group, hCG group and the LH group were 93.02% and 96.89%, 88.81% and 93.66%, 95.00% and 95.00% resp.and were significantly higher than that in the control group(71.25% and 78%).