Mathis Clay P, Sawyer Jason E
Department of Extension Animal Sciences and Natural Resources, New Mexico State University, Las Cruces, NM 88003, USA.
Vet Clin North Am Food Anim Pract. 2007 Mar;23(1):1-19. doi: 10.1016/j.cvfa.2006.12.001.
In grazing operations, forage quality and availability are sometimes limited, and cattle are unable to consume enough nutrients from pasture forage to fulfill requirements. During such situations, supplemental or replacement feeding is necessary to meet production goals. A fundamental understanding of ruminant nutrition and forage management is helpful in deciding which feed or supplement type (ie, energy versus protein) best fits the goals of a specific beef production system. It is important to choose a delivery method and supplement form that provide the targeted amount of desired nutrients to each animal in the herd and that minimize input costs. The objective of this article is to serve as a resource for veterinarians as they provide nutritional management support to beef cow producers.
在放牧作业中,牧草质量和可获得量有时会受到限制,牛无法从牧场牧草中摄取足够的营养来满足需求。在这种情况下,需要进行补充饲喂或替代饲喂以实现生产目标。对反刍动物营养和牧草管理有基本的了解,有助于确定哪种饲料或补充剂类型(即能量与蛋白质)最适合特定肉牛生产系统的目标。选择一种能为牛群中的每头动物提供目标量所需营养且能将投入成本降至最低的投喂方式和补充剂形式非常重要。本文的目的是为兽医在为肉牛生产者提供营养管理支持时提供参考资源。