定时输精程序对难孕牛繁殖效率的影响  

Effect of timing insemination program on reproductive efficiency of difficult gestational cattle

作　　者：刘汉玉[1] 赵玮[1] 刘明 陈晓华[1] 宓宪伟[1] 王素梅[1] 潘明章 LIU Hanyu;ZHAO Wei;LIU Ming;CHEN Xiaohua;MI Xianwei;WANG Sumei;PAN Mingzhang(Heilongjiang Vocational College,Harbin 150111,China;Heihe Animal Husbandry and Aquatic Service Center,Heihe 164300,China;Shuangcheng Qingyuan Animal Husbandry Co.,Ltd.,Harhin 150111,China)

机构地区：[1]黑龙江职业学院,哈尔滨150111 [2]黑河市畜牧水产服务中心,黑龙江黑河164300 [3]双城庆源牧业有限公司,哈尔滨150111

出　　处：《黑龙江畜牧兽医》2022年第2期57-59,共3页Heilongjiang Animal Science And veterinary Medicine

基　　金：黑龙江职业学院校级应用课题“(Ovsynch-TAI)技术在规模化奶牛场的应用研究”(01)。

摘　　要：为了研究定时输精程序对产后难孕泌乳牛受胎率的影响,试验将40头已产3胎、体况良好、膘情适中、产后3个情期以上配种未孕中国荷斯坦成年母牛随机分为2组,每组20头。试验1组不进行激素处理,采用自然发情配种的方法;试验2组采用定时输精程序处理,统计分析两组的参配率和受胎率,同时对试验2组中有发情表现的母牛与未观察到发情表现的母牛的受胎率进行比较。结果表明:试验1组的参配率为5%,试验2组的参配率为100%,两组参配率差异极显著(P<0.01)。试验1组的受胎率为5%,试验2组的受胎率为40%,两组的受胎率差异显著(P<0.05)。试验2组中有发情表现母牛的受胎率为100%,没有发情表现母牛的受胎率为7.69%,两者的受胎率差异极显著(P<0.01)。说明定时输精程序提升了难孕母牛的受胎率且效果明显,试验2组中有发情表现母牛的受胎率高于无发情表现母牛。In order to study the effect of timing insemination procedure on the conception rate of postpartum difficult gestational lactating cows, forty mating non-pregnant China Holstein adult cows with 3 births, good body condition, moderate fat at least 3 postnatal estrus stages were randomly divided into two groups with 20 cows pergroup.Cattle in the test group 1 were bred naturally in estrus(without hormone treatment), and cattle in the test group 2 was treated with timing insemination procedure.The matching rate and conception rate of the two groups were analyzed statistically, and the conception rate of the cows with oestrus and without oestrus were compared.The results showed that the matching rate in the test group 1 was 5%, and that in test group 2 was 100%. There was a significant difference in the matching rate between the two groups(P<0.01). The conception rate in the test group 1 and test group 2 was 5% and 40%, respectively, there was a significant difference in the conception rate between the two groups(P<0.05). The conception rate of cows with oestrus in the test group 2 was 100%, and the conception rate of cows without oestrus was 7.69%.The difference of conception rate between the two conditions was very significant(P<0.01). The results indicated that the timing insemination program improved the conception rate of difficult gestational cows and the effect was obvious.The conception rate of cows with estrus was higher than that of cows without estrus in the test group 2.

关 键 词：定时输精 促性腺激素释放激素 前列腺素F 卵巢 卵泡 黄体 

分 类 号：S814.3[农业科学—畜牧学]