不同处理方法对湖羊初产母羊同期发情和繁殖性能的影响  

Effects of different protocols of estrous synchronization on reproductive performance of primiparous ewes of Hu sheep

作　　者：艾克拜尔·艾合麦提 程志跃 阿布力皮孜·买买提 樊琛 木热迪力·麦麦提 王旭光[1] 赵国栋[1] Aikebaier Aihemaiti;CHENG Zhiyue;Abulipizi Maimaiti;FAN Chen;Muredili Maimaiti;WANG Xuguang;ZHAO Guodong(College of Animal Sciences,Xinjiang Agricultural University,Urumqi 830052,China;Agriculture and Rural Affairs Bureau of Xinjiang Shaya County,Shaya 842200,China)

机构地区：[1]新疆农业大学动物科学学院,新疆乌鲁木齐830052 [2]新疆沙雅县农业农村局,新疆沙雅842200

出　　处：《畜牧与兽医》2024年第11期28-32,共5页Animal Husbandry & Veterinary Medicine

基　　金：自治区天池英才项目。

摘　　要：旨在探究促性腺激素释放激素(GnRH)和前列腺素(PG)对湖羊初产母羊同期发情和繁殖性能的影响。将199只健康、体况良好、空怀的初产母羊随机分为GnRH组(n=103)和PG组(n=96),分别用2种激素进行同期发情处理,GnRH组采用GnRH+PG+GnRH方法处理,PG组采用PG+PG方法处理;处理后24、48、72 h观察母羊的发情表现,对发情母羊即时进行人工授精,配种时每只羊肌肉注射促黄体素释放激素A3;授精后35 d使用B超机进行妊娠诊断,统计受胎率和产羔情况。结果显示:2组母羊发情时间均主要集中在0~24 h,显著高于24~48 h和48~72 h(P<0.05);总发情率GnRH组(84.47%)与PG组(79.17%)之间无显著差异(P>0.05);2组母羊的受胎率、产羔率、单羔率、双羔率、多羔率和流产率也均无显著差异(P>0.05);PG组的药物费用为6.55元/只,GnRH组的药物费用为9.91元/只,PG组的成本更低。结论:鉴于GnRH组与PG组的同期发情效果接近,考虑到成本因素,建议在集约化养殖过程中应用PG组方法对初产母羊进行同期发情处理。This study aimed to investigate the effects of gonadotropin-releasing hormone(GnRH)and prostaglandin(PG)on estrus synchronization and reproductive performance of primiparous ewes of Hu sheep,and to find a more economical and effective estrus synchronization scheme for large-scale breeding production.199 healthy primiparous ewes were obtained and randomly divided into 2 groups:the GnRH group(n=103)and the PG group(n=96).The GnRH group was treated with GnRH+PG+GnRH.The PG group was treated with PG+PG.The estrus performance of the two groups of ewes was observed at 24,48,and 72 h after treatment.Artificial insemination was performed immediately on the estrus ewes,and each ewe was intramuscularly injected with LRH A3 during mating.35 days later,pregnancy of the ewes was diagnosed by ultrasonography and the pregnancy rate,and the number of lambs was counted.The results showed that the estrus time of the two groups of ewes was mainly in the period of 0-24 h,and there was a significant difference in the estrus time between 24-48 h and 48-72 h(P<0.05).There was no significant difference in the overall estrus rate between the GnRH group(84.47%)and PG group(79.17%)(P>0.05).There was no significant difference in conception rate,lambing rate,single lambing rate,twinning rate,multiple lambing rate and abortion rate between the two groups(P>0.05).The drug cost of the PG group was 6.55 yuan for each ewe,the drug cost of the GnRH group was 9.91 yuan each,and the cost of PG group was lower.In summary,in view of the fact that the estrus synchronization effect of GnRH group and PG group was close.However,considering the cost factor,it is recommended that the estrus synchronization treatment for primiparous ewes of the PG group be applied during intensive breeding.

关 键 词：初产母羊 同期发情 发情率 促性腺激素释放激素 前列腺素 

分 类 号：S827.3[农业科学—畜牧学]