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Effect of red peppper(Capsicum frutescens)powder or red pepper pigment on the performance and egg yo
Two experiments were conducted to study the effects of red pepper (Capsicum frutescens) powder or red pepper pigment on ......
Use of antimicrobials in food animals and impact of transmission of antimicrobial resistance on huma
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本试验采用三因素,按L9(3^4)正交设计,进行了奶牛饲料中添加不同水平的Cu、Zn、Se饲喂试验,结果表明,补饲牛的健康良好,受孕率增高,换毛快,日均产奶量明......