Limitations of Tropical Pastures in Relation to VFAs and Methane Production in Vitro with respect to Monsoonal Rangelands

摘要：

　　Northern Australian tropical pastures transition through dry periods of low rainfall and limited nutritional value which presents challenges in terms of animal productivity and lifecycle methane emissions.This study was conducted to utilize in vitro gas production to assess the methane contribution from tropical forages differing in harvest date and N content.The Ankom Gas Production system was used to measure differences in total gas production (TGP) between Barley Mitchell (Astrebla pectinata) pasture collected in wet (March/May) and dry season (Aug/Nov) northern Australia.Analysis of variance showed an effect of harvest date on in vitro organic matter digestibility (IVOMD, P<0.001), and total volatile fatty acids (VFAs, P<0.05).Total gas production per g digestible organic matter (DOM) was not affected by date of harvest but methane production per 1 g DOM was greater (P<0.01) in March.

关键词： methane in vitro tropical grass gas production

作者: L.Perry N.Tomkins R.AI Jassim

作者单位: School of Agriculture & Food Sciences, University of Queensland Gatton, QLD 4343, Australia;CSIRO, A CSIRO, ATSIP, James Cook University, Douglas, QLD 4811, Australia School of Agriculture & Food Sciences, University of Queensland Gatton, QLD 4343, Australia

会议类型: 国内会议

会议名称: 第二届中国肉牛选育改良与产业发展国际研讨会暨中国畜牧兽医学会养牛分会八届二次学术研讨会

会议地点: 陕西杨凌

会议语种:英文

页码: 286-289

在线出版日期: 2013-10-22（万方平台首次上网日期，不代表论文的发表时间）