Four pH values (6.2,5.5,5.0 or 4.5;marked as treatment pH 6.2,pH 5.5,pH 5.0 or pH 4.5) and two ratios of vegetable prote......

Twenty-four Holstein bull calves were fed milk replacer and concentrates to determine the effects of method of feeding m......

通过犊牛代乳品饲喂试验,结果证明,犊牛代乳品具有较高的营养价值,可完全代替母乳;同时,其可以提高犊牛的精粗料采食量,试验组犊牛......