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articleAbstract=胎衣不下是奶牛产后常见繁殖疾病,并会导致继发疾病,给牧场带来巨大的经济损失。关于奶牛胎衣不下发病机制尚未完全揭示,胎盘结构特殊性和胎衣排出复杂过程导致奶牛胎衣不下时常发生。本文从奶牛生理结构特点、围产期代谢特点和生产过程免疫抑制等角度对奶牛胎衣不下的病因以及防控措施进行了阐述,并系统地分析因胎衣不下造成的牧场经济损失,旨在为预防及治疗奶牛胎衣不下提供参考,提高牧场盈利能力。, authors=余冬冬, 罗星, 李伟, authorsList=余冬冬, 罗星, 李伟, authorCompany=宁波第二激素厂,浙江宁波 315000, correspAuthors=null, authorNote=余冬冬（1988-）,男,安徽滁州人,硕士,研究方向为动物遗传育种与繁殖;罗 星（1993-）,男,四川眉山人,大专,研究方向为奶牛育种繁殖;李 伟（1989-）,男,浙江宁波人,在读博士,研究方向为新兽药研发与应用。, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=QQj9MBEYGkE0lECOllVTkg==, pdfFileSize=3407853, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1320063040138104964, tenantId=1146029695717560320, journalId=1296801528146919473, 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