The effects of lucerne hay particle size on chewing activity and rumen fermentation in dry cows

摘要：

Three cannulated, multiparous dry cows were randomly assigned to a 3 × 3 Latin square experiment to evaluate the effects of different luceme hay particle size on eating behaviour, chewing activity, and rumen fermentation based on measurements of the Perm State Particle Separator. During each of the 21-d periods, animals were offered one of three total mixed rations, which were chemically identical but included lucerne hay of different length (2, 4, 8 cm). Results showed that increasing lucerne hay particle size decreased intake of DM and NDF, increased chewing activities, rumen pH and ammonia concentration, and decreased the concentration of VFA.

关键词： lucerne hay chop length chewing behaviour rumen dry cows

作者: T.Sun S.L.Li M.He Z.J.Cao

作者单位: National Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University Beijing 100094, 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: 749-754

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）