摘要
为探究受体牛疫苗免疫后胚胎移植时间对胚胎移植效果的影响、进一步提高冷冻胚胎移植的受胎率,于2019年6月和9月、2022年9月、2023年9月分批开展试验,选取红安格斯牛、和牛、荷斯坦牛,每种牛随机分成4组(10~15 d组、16~30 d组、31~45 d组、≥60 d组),在疫苗免疫不同时间进行胚胎移植。在胚胎移植第35天采用B超仪监测受胎率。结果表明:在进行疫苗免疫后不同时间进行胚胎移植,安格斯、和牛、荷斯坦牛受胎率均为31~45 d组、≥60 d组受胎率较高,显著高于10~15 d组、16~30 d组(P<0.05)。说明牛的胚胎移植受体牛接种疫苗应与预定移植日期保持30 d以上间隔,以避免胚胎移植受胎率下降。
In order to explore the effect of transfer time on the pregnancy rate of vaccinated recipient cow and further improve the conception rate of frozen embryo transfer,the embryo transfer experiments were conducted in June and September 2019,September 2022,and September 2023.The animals from breeds of Red Angus,Wagyu and Holstein cattle were randomly divided into 4 groups as recipients,respectively,in which embryos were transferred at(10 to 15 d,16 to 30 d,31 to 45 d,and≥60 d)after immunization.On the 35th day of embryo transfer,the pregnancy rate was monitored by B-ultrasound.The results showed as follows:The pregnancy rates of groups of 31 to 45 d and≥60 d in Angus,Wagyu and Holstein cattle transferred were significantly higher(P<0.05)than those in groups of 10 to 15 d and 16 to 30 d.It could be concluded that the transfer time could be>30 d after immunization to avoid a decrease in the pregnancy rate of embryo transfer in cattle.
作者
韩志强
张利军
冯利锐
王彦超
张洪涛
李长志
王洪亮
HAN Zhiqiang;ZHANG Lijun;FENG Lirui;WANG Yanchao;ZHANG Hongtao;LI Changzhi;WANG Hongliang(Institute of Animal Science and Veterinary Medicine,Heilongjiang Academy of Land-Reclamation Sciences,Harbin 150038,China;Beian Agricultural Reclamation Changxin Ranch Cooperative,Beian 164000,China;Beian Animal Husbandry and Veterinary Service Center,Beian 164000,China)
出处
《黑龙江动物繁殖》
2024年第2期31-34,共4页
Heilongjiang journal of animal reproduction
基金
财政部和农业农村部国家现代农业产业技术体系项目(CARS-37)。
关键词
荷斯坦
红安格斯牛
和牛
免疫
受胎率
胚胎移植
Holstein
Red Angus
Wagyu
vaccination
pregnancy rate
embryo transfer
