Comparison of different maize stalk sources in Chinas dairy production based on the Cornell system

摘要：

For optimising the use of maize stalks in Chinas dairy production system, dry maize stalks (DMS), maize stalk silage (MSS) and high oil maize silage (HOMSS) were compared at 11 concentrate/ roughage (C/R) levels from 25/75 to 75/25 with maize stalks used as a sole roughage source in the TMR. The Cornell system V5.0 was used as the base model in computer simulation. Actual chemical analyses of DMS, MSS and HOMSS were used in feed database. Results indicated that the HOMSS, MSS and DMS based TMR supported milk yield up to 28,25 and 23 kg/d, respectively. At the same C/R level, HOMSS supported the highest milk yield with the highest economic return and the lowest concentrate consumption and the lowest N excretion per kg of milk. DMS supported the lowest milk yield with the lowest economic return, the highest concentrate consumption and the highest N excretion per kg of milk.

关键词： maize stalk Cornell system dairy production system

作者: J.S.Zhao Y.Q.Xiong J.P.Du Q.X.Meng

作者单位: State Key Laboratory of Animal Nutrition, Beef Cattle Research Centre, College of Animal Sciences & 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: 1006-1011

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）