Effects of cobalt and copper supplementation on vitamin B12 status and blood parameters in lambs
The experiment was conducted to investigate the effects of cobalt (Co) and copper (Cu) supplementation on vitamin B12 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 B12 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 B12 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.
cobalt copper vitamin B12 blood parameter lamb
R.L.Wang W.Zhang X.P.Zhu L.L.Yu Z.H.Jia
College of Animal Science and Technology, China Agricultural University Yuanmingyuan Xi Road 2, Beij College of Animal Science and Technology, China Agricultural University Yuanmingyuan Xi Road 2, Beij
国际会议
The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)
北京
英文
971-976
2007-09-16（万方平台首次上网日期，不代表论文的发表时间）