Effect of supplemental β-carotene in the periparturient diet on plasma vitamin A and β-carotene concentrations and lymphocyte proliferation in Holstein cows

摘要：

Thirty six lactating Holstein cows were selected based on identical parity, milk yield, body weight and body condition score to study the effect of supplemental β-carotene in the periparturient diet on plasma vitamin A (VA) and β-carotene concentrations and lymphocyte proliferation. The cows were randomly allotted into three groups and individually fed with one of three treatment diets: 1. control diet (basic diet + 150,000 IU VA/cow/day), 2. control diet + 300 mg β-carotene/cow/day, and 3. control diet + 600 mg β-carotene/cow/day. The results showed that supplemental β-carotene increased the concentration of VA and β-carotene in plasma, and increased the lymphocyte proliferation with adequate VA in the diet during periparturient period (P＜0.01).

关键词： β-carotene plasma lymphocyte proliferation cows

作者: W.J.He Q.D.Zhang L.P.Ren Q.X.Meng

作者单位: State Key Laboratory of Animal Nutrition, Beef Cattle Research Center and College of Animal Science Chinese Academy of Agricultural Engineering Beijing 100026, P.R.China

会议类型: 国际会议

会议名称: 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)

会议地点: 北京

会议语种:英文

页码: 893-898

在线出版日期: 2007-09-16（万方平台首次上网日期，不代表论文的发表时间）