文献类型：期刊文献

英文题名：Effects of cobalt and copper supplementation on vitamin B₁₂ status and blood parameters in lambs

作者：Wang, R. L.[1,2];Zhang, W.[1];Zhu, X. P.[1];Yu, L. L.[1];Jia, Z. H.[1]

机构：[1]China Agr Univ, Coll Anim Sci & Technol, Beijing 100094, Peoples R China;[2]Guangdong Ocean Univ, Dept Anim Sci, Zhanjiang 524088, Peoples R China

年份：2007

卷号：16

起止页码：471

外文期刊名：JOURNAL OF ANIMAL AND FEED SCIENCES

收录：SCI-EXPANDED(收录号：WOS:000207641800080)、、WOS

语种：英文

外文关键词：cobalt; copper; vitamin B-12; blood parameter; lamb

外文摘要：The experiment was conducted to investigate the effects of cobalt (Co) and copper (Cu) supplementation on vitamin 1312 status and blood parameters in lambs. Sixteen lambs were assigned randomly to control group which was fed with the basal diet containing 0.086 mg Co/kg DM and 6.09 mg Cu/kg DM and the Co-, Cu- and Co-Cu groups, supplementation of 0.03 mg Co/kg DM and 10 mg Cu/kg DM, separately and in combination to the control diet. The Co- and Co-Cu supplemented lambs showed higher vitamin 1312 concentrations in both ruminal fluid and plasma, and lower methylmalonic acid in plasma compared with other groups (P<0.01). No difference was observed in plasma glucose between treatments (P>0.05). Haeme-depending blood parameters were enhanced by Co or Cu supplementation. It was concluded that vitamin B-12 production by rumen microorganism was accounted for by cobalt intake with no collaborate effects of Co plus Cu supplied in the diet. Co or Cu supplementation has positive effects on blood parameters.