The disease is believed to have spread in Europe through animal feed.据信，该疾病已通过动物饲料在欧洲传播。A large part of our income goes on animal feed.我们收入的很大一部分都用来买牲口饲料了。Corn is used as animal feed.玉米被用作牲口饲料。The grain just rotted and all they could use it for was animal feed.谷物完全烂掉了，他们能将其派上的唯一用场就是作动物饲料。