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

作     者：Y.Q.Zhang X.Z.Deng Z.M.Zhou L.P.Ren Q.X.Meng~1 State Key Laboratory of Animal Nutrition Beef Cattle Research Center and College of Animal Science and Technology China Agricultural University Beoing 100094 P.R.China 

会议名称：《The Ⅶ International Symposium on the Nutrition of Herbivores(ISNH-7)》

会议日期：2007年

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

基　　金：Supported by The 948 Grand from Ministry of Agriculture of China Project No.2003-Z77 

关 键 词：calves processing maize grain full fat soyabean rumen development 

摘      要：正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 *** 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（P0.10）. The molar proportion of butyrate for calves receiving SFMS starter diets was higher than that of EMS and GMS starter diets（P0.05）at wk 5 and *** papillae development characteristics expressed by papilla length,papilla width and rumen wall thickness were remarkably different among treatment starter diets（P0.05）.