Van Saun Robert J
Department of Veterinary and Biomedical Sciences, College of Agricultural Sciences, Pennsylvania State University, 108C Animal, Veterinary and Biomedical Sciences Building, University Park, PA 16802-3500, USA.
Vet Clin North Am Food Anim Pract. 2023 Nov;39(3):517-533. doi: 10.1016/j.cvfa.2023.07.001. Epub 2023 Aug 26.
Trace mineral nutrition of sheep often focuses on their greater susceptibility to copper toxicosis due to a lesser biliary excretion ability compared with other ruminants. Our understanding of sheep trace mineral requirements has improved for most elements allowing for a factorial approach to determining daily requirement instead of a dietary concentration. Forage trace mineral content is influenced by many factors making issues of trace mineral supplementation geographic-dependent. Oral delivery of trace elements is a preferred supplementation method, and this can be achieved through free choice trace mineralized salt or direct dietary incorporation.
绵羊的微量矿物质营养通常聚焦于，与其他反刍动物相比，它们因胆汁排泄能力较弱而对铜中毒更敏感。我们对绵羊微量矿物质需求的理解在大多数元素方面已有改善，这使得可以采用析因法来确定每日需求量，而非依据日粮浓度。饲草中微量矿物质含量受多种因素影响，使得微量矿物质补充问题具有地域依赖性。口服微量元素是一种首选的补充方法，这可以通过自由选择添加微量矿物质的盐或直接添加到日粮中来实现。
