《胚胎移植的应用》PPT课件

《《胚胎移植的应用》PPT课件》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、动物繁殖学双语教学English-ChinishofReproductionginFarmAnimalTrainingmanuaiforembryotransferincattle第二章胚胎移植的应用提高母畜的繁殖率牛上应用胚胎移植技术的目的是提高母牛的繁殖率。动物繁殖学双语教学ApplicationsofembryotransferChapter2INCREASEREPRODUCTIONOFFEMALESThemainuseofembryotransferincattlehasbeentoamplify(增强)

2、reproductiveratesofvaluablefemales.由于母牛的繁殖率低和世代间隔generation（世代）intervals,长胚胎移植技术特别适用于该物种。generationintervals世代间隔动物繁殖学双语教学Becauseoflowreproductiveratesandlonggeneration（世代）intervals,embryotransferisespeciallyusefulinthisspecies.牛的胚胎移植应用有许多价值，包括已经证实proven(证实)和没

3、有被证实的scarcity(缺乏),，如遗传价值、抗病特性diseaseresistance（抗病）.。proven(证实)scarcity(缺乏),unique(独特的)diseaseresistance（抗病）动物繁殖学双语教学Cattlemaybevaluableformanyremasons,includingscarcity(缺乏),proven(证实)geneticvalue,orhavingunique(独特的)characteristicssuchasdiseaseresistance（抗病）.从

4、理论上讲，胚胎移植在遗传和经济上financial都是安全的，例如同时，simultaneously，乳和肉增长的同时也可获得投资investment的好的回报。Investment投资Financial经济上Simultaneously同时i.e.例如动物繁殖学双语教学Investment（投资）embryotransferisusedtosatisfybothgeneticandfinancial(经济上)objectivessimultaneously(同时),i.e.milkormeatproductio

5、nincreaseorgreaterefficiency,andtheinvestment（投资）returnsfinancialbenefitsaswell.采用胚胎移植技术可以将母牛的繁殖率提高10-5倍。Tenfold十倍fivefold5倍动物繁殖学双语教学Itispossibletoincreasereproductiveratesofvaluablecowsbyanaverageoftenfold(十倍)ormoreinagivenyearandfivefold（5倍）ormoreperlifetim

6、ewithcurrentembryotransfertechniques.采用卵子体外成熟培养这项新技术可以扩大和提高胚胎的利用率。Amplification扩大invitro体外,Perfected完成动物繁殖学双语教学Thisamplification(扩大)willincreasesubstantially(充分地)asnewtechnologies,suchasmaturingoocytesinvitro(体外),areperfected(完成).选择适合的胚胎移植程序提高供体的繁殖率可以减低受体的费用d

7、onors供体Routine程序Recipients受体Expense费用动物繁殖学双语教学Increasedreproductiveratesofdonors(供体)withroutine(程序)embryotransferproceduresarenearlyalwaysattheexpense(费用)ofreducedreproductiveratesofrecipients(受体).这种方法仅用少数的供体体就可以与较多的受体结合.recipients受体Conventionally按常规动物繁殖学双语教学

8、Thismeansthatfewercalveswillbeproducedfromdonorsandrecipients(受体)combinedthanifbothreproducedconventionally(按常规).因为受体必须要等待胚胎,但按常规受体不能妊娠。recipients受体toawait等待Pregnant妊娠conventionally按常规动物繁