Effects of processing maize grains and soyabean on rumen fermentation and development of Holstein bull calves

摘要：

A feeding trial using 12 Holstein bull calves (21 ±3 d) was conducted to investigate the effect of different processed maize grain and full fat soyabean included in the starter diets on their rumen fermentation and development. Three treatment starter diets contained different processed maize grain and soyabean: steam-flaked maize and soyabean (SFMS), extruded maize and soyabean (EMS), and ground maize and raw soyabean (GMS). During 10-week trial, total rumen VFA concentration tended to be influenced by different processing methods at wk 6 and 9 (P＜0.10). The molar proportion of butyrate for calves receiving SFMS starter diets was higher than that of EMS and GMS starter diets (P＜0.05) at wk 5 and 11. Rumen papillae development characteristics expressed by papilla length, papilla width and rumen wall thickness were remarkably different among treatment starter diets (P＜0.05).

关键词： calves processing maize grain full fat soyabean rumen development

作者: Y.Q.Zhang X.Z.Deng Z.M.Zhou 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 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: 1025-1030

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）