Niederwerder Megan C
Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA.
Animals (Basel). 2021 Mar 18;11(3):792. doi: 10.3390/ani11030792.
Since the 2013 introduction of porcine epidemic diarrhea virus into the United States (U.S.), feed and feed ingredients have been recognized as potential routes for the introduction and transmission of foreign animal diseases of swine. Feed ingredients for swine diets are commodities traded worldwide, and the U.S. imports thousands of metric tons of feed ingredients each year from countries with circulating foreign animal diseases. African swine fever (ASF) is the most significant foreign animal disease threat to U.S. swine production, and the recent introduction of ASF into historically negative countries has heightened the risk for further spread. Laboratory investigations have characterized the stability of the ASF virus (ASFV) in feed ingredients subjected to transoceanic shipment conditions, ASFV transmissibility through the natural consumption of plant-based feed, and the mitigation potential of certain feed additives to inactivate ASFV in feed. This review describes the current knowledge of feed as a risk for swine viruses and the opportunities for mitigating the risk to protect U.S. pork production and the global swine population from ASF and other foreign animal diseases.
自2013年猪流行性腹泻病毒传入美国以来，饲料和饲料原料已被视为猪外来动物疾病传入和传播的潜在途径。猪日粮的饲料原料是全球交易的商品，美国每年从存在外来动物疾病流行的国家进口数千公吨饲料原料。非洲猪瘟（ASF）是对美国养猪业构成最大威胁的外来动物疾病，最近ASF传入历史上无疫情的国家，增加了其进一步传播的风险。实验室研究已经确定了非洲猪瘟病毒（ASFV）在跨洋运输条件下饲料原料中的稳定性、通过天然食用植物性饲料的ASFV传播性，以及某些饲料添加剂在饲料中灭活ASFV的潜在缓解作用。本综述描述了目前关于饲料作为猪病毒风险的知识，以及降低风险的机会，以保护美国猪肉生产和全球猪群免受ASF和其他外来动物疾病的侵害。
