作 者：
王英群;谢燕妮;卿红旗;刘瑞鑫;许春荣;邓祝新;洪绍锋;漆爱荣;李铭
关键词：
杂交黄牛;激素诱导;发情率;双犊率;产犊数量
摘 要：
[目的]旨在研究不同促排卵方案对黄牛生产双犊、多犊和活犊数的影响.[方法]将200 头杂交黄牛的母牛随机分为 4 组,A组 101 头为对照组,常规自然发情后进行人工授精;B、C、D组为试验组,分别采用不同促排方案处理母牛,发情后同样进行人工授精.B组 31 头,采用CIDR+PMSG+PG+LHRH-A3;C组 44 头,采用CIDR+FSH+PG+LHRH-A3;D组24头,采用CIDR+IHN+FSH+PG+LHRH-A3.分别统计4种处理方法的受胎率.[结果]A、B、C、D组受胎率分别为 68.32%、29.03%、63.64%、66.67%,B组的受胎率比A组显著降低 39.29 个百分点(P<0.01),C、D组的受胎率与A组相比差异不显著(P>0.05).在母牛双犊率中,C、D组双犊率与A、B组的差异极其显著(P<0.01);D组比C组提高 11.61 个百分点,差异显著(P<0.05).在三犊及以上母牛的占比中,B、C、D组分别极显著高于A组(P<0.01),C、D组极显著高于B组(P<0.01),C组显著高于D组(P<0.05).C、D组的活产双犊率极显著高于A、B组(P<0.01);B、C、D组的三犊及以上占产活犊总数比例极显著高于A组(P<0.01).[结论]与对照组相比,采用D方案诱导母牛生产双犊率和活犊的效果最好,其次是C方案,B方案最差.
译 名：
Effect of Different Ovulation Stimulating Schemes on the Production of Double,Multiple and Live Calves in Cows
关键词：
crossbred yellow cow%hormone induction%estrus rate%double calf rate%calving quantity
摘 要：
[Objective]The aim of this paper was to study the effects of different ovulation stimulating shemes on the production of double,multiple calves and live calves in yellow cows.[Method]200 crossbred yellow cows were randomly divided into 4 groups,namely group A(101 cows)as the control group,and artificial insemination was performed after routine natural estrus.The cows in groups B,C and D as the test groups were treated with different ovulation induction schemes,and artificial insemination was also performed after estrus.Among them,31 cows in group B were treated with CIDR + PMSG + PG + LHRH-A3,44 cows in group C were cows in group C were treated with CIDR + FSH + PG + LHRH-A3,and 24 cows in group D were created with CIDR + IHN + FSH + PG + LHRH-A3.The conception rates of the four treatment methods were statistically analyzed.[Result]The conception rates of groups A,B,C and D were 68.32%,29.03%,63.64%and 66.67%,respectively.The pregnancy rate of group B was significantly decreased by 39.29 percentage points compared with group A(P<0.01),and the pregnancy rate of group C and D had no significant difference compared with group A(P>0.05).The double calving rate of cows in groups C and D was significantly different from that in groups A and B(P<0.01),and the double calving rate in group D was 11.61 percentage points higher than that in group C(P<0.05).The proportion of cows with three or more calves in groups B,C and D was significantly higher than that in group A(P<0.01).Groups C and D were significantly higher than group B(P<0.01),and group C was significantly higher than group D(P<0.05).The live birth rate of two calves in groups C and D was significantly higher than that in groups A and B,respectively(P<0.01).The proportion of three or more calves in the total number of live calves in groups B,C and D was significantly higher than that in group A(P<0.01).[Conclusion]In conclusion,compared with the control group,D regimen had the best effect on inducing cows to produce double calving rate and live calves,followed by C regimen.Scheme B is the worst.
