动物医学进展Issue(11)：62-65,4.
复合营养舔砖对奶牛血清中微量元素水平的影响
Effects of Multinutrient Blocks on Trace Element Contents of Serum in Dairy Cows
摘要
Abstract
The objective of this study was to evaluate the ability of Holstein dairy cows to regulate intake of multinutrient blocks with trace mineral contents.Holstein dairy cows were chosen at random,and divided into three groups,high yield dairy cows,middle yield dairy cows,and low yield dairy cows,respectively. After feeding for 1,2,3 and 4 months,the contents of Cu,Mn,Fe and Zn in serum were detected.The results showed that the content of serum Cu was reduced except the first month.The content of serum Mn in all groups was higher than that before feeding period (P <0.01).The content of serum Fe in high and middle yield dairy cows had no significant difference compared with before feeding period,but higher than that before feeding period in low yield dairy cows on second and third month (P <0.01 and P <0.05).The content of serum Zn was increased,especially in the high yield dairy cows.The ratio of Cu/Zn was in-creased with the feeding cycle extend.In conclusion,the results of this experiment showed that multinu-trient blocks have significant simulative effect on improving serum level of trace elements in dairy cows.关键词
复合营养舔砖/微量元素/奶牛/血清Key words
multinutrient block/trace element/dairy cow/serum分类
农业科技引用本文复制引用
王慧,王胜义,齐志明,刘世祥,李胜坤,刘永明..复合营养舔砖对奶牛血清中微量元素水平的影响[J].动物医学进展,2014,(11):62-65,4.基金项目
农业科技成果转化资金项目（2010GB23260564）；中央级科研院所基本科研业务费 （）
