中国牛业科学2025，Vol.51Issue(3)：25-29,5.DOI:10.26951/j.cnki.ccs.2025.03.004
双PG处理技术对肉牛胚胎生产的影响效果
Effects of Double PG Treatment on Embryo Production in Beef Cattle
摘要
Abstract
Using purebred beef-type Simmental cattle aged over 10 months as donor cows,this study in-vestigated the embryo production efficiency of a double prostaglandin(PG)treatment protocol and its sea-sonal effects on embryo production outcomes.The experiment involved three trials dividing a total of 248 donor cows into Group A(A1,A2,A3)and Group B(B1,B2,B3).The 112 cows in Group A received standard superovulation treatment,while the 136 cows in Group B underwent dual PG treatment.Results demonstrated that Group B1 showed significant improvements:average embryo production per cow in-creased by 1.68(P＜0.05),transferable embryos by 2.18(P＜0.01),and Grade A embryos by 2.74(P＜0.01)compared to Group A1.This indicates that dual PG pretreatment significantly enhances both quantity and quality of embryo production compared to conventional protocols.The results of embryo production using two treatment methods in spring(A2,B2 groups)and summer(A3,B3 groups)showed that the ave-rage number of embryos produced per head and the number of A-level embryos produced by cows in the A groups were significantly higher in spring(P＜0.05)than in summer(2.67 and 0.54.respectively).The ave-rage number of usable embryos per head and the average number of A-level embryos per head of B group cows during spring production were 0.31 and 0.50 higher than those during summer,respectively,but the difference was not significant(P＞0.05).The available embryo rate of B2 group cows during spring produc-tion is higher than that of A2 and A3 groups,and the A-level embryo rates of B2 and B3 groups cows are higher than those of A2 and A3 groups,respectively.These findings indicated that two PG treatments before superovulation could significantly improve the embryo availability and A-level embryo rate of donor cows,and the quantity and quality of embryos produced were better in spring.关键词
肉牛/氯前列烯醇钠(PG)/同期发情/超排/胚胎质量Key words
beef cattle/cloprostenol sodium(PG)/estrus synchronization/superovulation/embryo quality分类
农业科技引用本文复制引用
欧阳晓芳,石晓兵,卿胜奎,贾志虎,刘逸炫,和嘉荣,苏华伟,和晓明,刘绍贵,李鸿,陈红艳,杨亮宇,上官步敏..双PG处理技术对肉牛胚胎生产的影响效果[J].中国牛业科学,2025,51(3):25-29,5.基金项目
云南农业职业技术学院"优秀老龄种母牛超排效果研究"项目 （）
