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1前言断奶过渡是一个复杂的过程,在此期间仔猪必须经历与母猪突然分开,进入新环境与其他窝的仔猪混养,饲料从消化良好的母乳变为更复杂、消化性较差的固体饲料,因此对仔猪而言,断奶是涉及营养、生理、环境、微生物和免疫应激的过程。早期断奶可提高现代集约化养猪生产的育种效率和经济效益,但也带来很多不利影响,如采食量减少、肠道健康受损、
1 Introduction Weaning transition is a complex process during which piglets must undergo a sudden separation from the sow and enter new milieuses to intervene with piglets in other litters and the feed is changed from well-digested mother’s milk to a more complex and poorly digestible solid Therefore, in piglets, weaning is a process involving nutrition, physiology, environment, micro-organisms and immune stress. Early weaning can improve the breeding efficiency and economic benefits of modern intensive pig production, but it also brings many adverse effects, such as reduced feed intake, impaired intestinal health,