长白母猪排卵时间和适配期研究  

Studies on the female Landrace’s ovulation time and the right period for mating

作　　者：郎介金[1] 缪永兴 陈呈锋 徐寿堂 

机构地区：[1]浙江农业大学动物科学学院,浙江省浦江县外贸良种猪场

出　　处：《浙江农业大学学报》1994年第4期374-377,共4页

基　　金：浙江省科委"七五"重点课题

摘　　要：通过对发情母猪分批屠宰测定表明，长白母猪排卵时间为发情特征出现后４８小时至７２小时左右。经采用长白和杜洛克公猪分别在母猪发情的不同阶段配种，对所产仔猪遗传特征鉴别结果证明，排卵大多集中在发情特征出现６０小时前后，相应地同期配种的产仔比例达７３．５６％。因此，确定掌握适配期为发情特征出现后４８小时左右作第一次配种，间隔１２—２４小时内复配一次，实施效果显著，第一期情受胎率为９４．５６％，平均窝产活仔数为（１０．１６±０．２６）头。The experimental results of investigating the estrous female Landrace slaughtered in separate batches indicated that the famale Landrace’s ovulation time was about 48 to 72 hours after its presence of estrous features. The mate of boar Landrace and male Dorock with sow respectively at the different time of estrous period,and the survey of piglet’s hereditary features,revealed that the ovulation mostly occurred in the period around 60 hours after the presence of estrous features The farrowing ratio of mating in this period reaclied 73.56% which was in accordance with the data measured in the slaughter experiment.It comes to the conclusion that the appropriate time for the first mating for the Landrace could be 48 hours after its appearance of estrouss features. The sec-ond mating could be made within 12 24 hours after the first one, The actual results were very de-sirable. The pregnancy rate reached 94. 58%(786/831)when the sow mated during the first estrous period,and the number of vital piglets for average litter reached as high as 10.16±0. 26。

关 键 词：长白母猪 排卵时间 适配期 猪 

分 类 号：S828.35[农业科学—畜牧学]