季節(jié)因素對奶牛體內(nèi)性控胚胎生產(chǎn)質(zhì)量和胚胎移植效果的影響

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中圖分類號：S823 文獻標識碼：A DOI編碼：10.3969/j.issn.1006—6500.2025.02.008

Effect of Seasonal Factors on the Qualityof Sex-controlled Embryo Production and Embryo Transfer Ef. fectinDairy Cows

GUO Shuang1，LIU Erfeng2，WANG ，SUN Guangkun3， JIA Hangfei2， WANG Hongying （1.TianjinAgriculturalDevelopmentServiceCenter，Tianjin3o61，China;2.TianjinJialiheAnimal HusbandryGroupompany Limited，Tianjin30404，China;3.Tianjin Tianshiniu Seed Industry CompanyLimited，Tianjin，China）

Abstract：Inordertostudytheimpactoftheseasonalfactorsonthequalityof theembryoproductionandtheefectofembryotransplantation，thistestchosetousetheembryomethdinTanjintoproduce536dairyembryosintheTanjnareaofwhichBorabove levelBorabovethenumberofembryoscanreach366 pieces，andthenumberofembryoscanbeusedby4.58heads;36Odairy embryos can be transplanted，with an average tire rate of 5 6 . 3 9 % . The test results showed that the seasonal factors had a certain impact onthequalityofdairyembryoproductionandembryonictransplantationefect.Withthearivaloftheotseason，thenumberofembryosproductionandthenumberofembryosinthebodyofdairybodywouldbereduced.SignificantlybelowApril，thediferencewas significantly level （ P ? transplanted in May and June.In conclusion，seasonal factors have agreat impact on the quality of embryoproductionandembryotransplantationfectontheintealcontrolofdairycows，embryoproductionndembryotransplantation in Tianjin should not be carried out ina hot season.

Keywords：different seasons; embryonic production;embryo transplantation; effect

胚胎移植技術(shù)是加快奶牛遺傳改良進程，提高優(yōu)質(zhì)高產(chǎn)核心群性能和數(shù)量的關(guān)鍵技術(shù)，利用胚胎移植技術(shù)能減少優(yōu)良種畜世代間隔和遺傳進程，增加優(yōu)秀母畜的后代數(shù)，提高優(yōu)秀種畜的利用率，在畜牧生產(chǎn)與科研實踐應用廣泛。（剩余6039字）