不列颠哥伦比亚省东南部肉牛的硒水平与补充剂及牧场类型的关系
Selenium levels of beef cattle in southeastern british columbia relative to supplementation and type of pasture.
作者信息
Fenimore R L, Adams D S, Puls R
出版信息
Can Vet J. 1983 Feb;24(2):41-5.
Abstract
Moderate to extremely low levels of selenium in hay were related to marginally deficient levels of selenium in sera from cattle in the Windermere Valley of southeastern British Columbia. Deficiency was most pronounced in cattle fed local hay during the winter or grazed on fertilized/irrigated pastures. Cattle on range had adequate levels of serum selenium. When sodium selenite was fed at 1.0 and 3.5 mg per head per day, serum selenium levels increased commensurate with the dose. Clinical observations indicated that a variety of clinical problems disappeared after injection or supplementation with selenium/vitamin E.
摘要
不列颠哥伦比亚省东南部温德米尔山谷地区干草中硒含量处于中度至极低水平，这与该地区牛血清中硒含量略低于正常水平有关。在冬季以当地干草为食或在施肥/灌溉牧场上放牧的牛群中，硒缺乏现象最为明显。在草原上放牧的牛血清硒水平充足。当每头牛每天饲喂1.0毫克和3.5毫克亚硒酸钠时，血清硒水平随剂量相应升高。临床观察表明，注射或补充硒/维生素E后，各种临床问题消失。
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