Relationship between in vitro gas production and dry matter and organic matter digestibility of rations for sheep

摘要：

Twelve typical mixed rations of sheep were formulated to study the relationship between in vitro gas production (GP) and in vivo nutrient digestibility (D). The in vitro GP of the rations at, h: 2, 4, 6, 12, 24, 48 and 72 was determined using the Hohenheim gas test. The in vivo digestibility of dry matter (DM), organic matter (OM) was determined using three adult sheep in four 3×3 Latin square design experiment in an earlier study (Xue et al., 2006). The GP at different incubation time was fitted to the model GP =a+b (1-e-ct) (φrskov and McDonald, 1979) and the GP parameters a (ml/200 mg DM), b (ml/200 mg DM), a+b (ml/200 mg DM) and c (％/h) were calculated. It was found that there were significant regression relationships between DM and OM digestibility and GP (P＜0.001), and between DM and OM digestibility and GP parameters a, b and c (P＜0.01; P＜0.001).

关键词： in vitro gas production nutrient digestibility sheep

作者: G.-Y.Zhao Y.Xue W.Zhang

作者单位: State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University Beijing 100094, PR.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: 729-734

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）