Effects of forage composition and growing season on methane emission from sheep in the Inner Mongolia steppe of China

	Effects of forage composition and growing season on methane emission from sheep in the Inner Mongolia steppe of China
	Wang, Chengjie ; Wang, Shiping ; Zhou, He ; Glindemann, Thomas
刊名	ecological research
	2007
卷号	22 期号:1 页码:41-48
关键词	methane emission sheep face mask plant composition seasonal influence inner Mongolia steppe of China
合作状况	其它
中文摘要	understanding the effects of dietary composition on methane (ch4) production of sheep can help us to understand grassland degradation resulting in an increase of ch4 emission from ruminant livestock and its resulting significance affecting ch4 source/sink in the grazing ecosystem. the objective of this study was to investigate the effect of forage composition in the diet of sheep in july and august on ch4 production by sheep in the inner mongolia steppe. the four diet treatments were: (1) leymus chinensis and cleistogenes squarrosa (lc), (2) leymus chinensis, cleistogenes squarrosa and concentrate supplementation (lcc), (3) artemisia frigida and cleistogenes squarrosa (ac), and (4) artemisia frigida, cleistogenes squarrosa and concentrate supplementation (acc). ch4 production was significantly lower in july than in august (31.4 and 36.2 g per sheep-unit per day, respectively). the daily average ch4 production per unit of digestive dry matter (dm), organic matter (om) and neutral detergent fiber (ndf) increased by 10.9, 11.2 and 42.1% for the ac diet compared with the lc diet, respectively. although concentrate supplementation in both the ac and lc diets increased total ch4 production per sheep per day, it improved sheep productivity and decreased ch4 production by 14.8, 12.5 and 14.8% per unit of dm, om and ndf digested by the sheep, respectively. our results suggested that in degraded grassland ch4 emission from sheep was increased and concentrate supplementation increased diet use efficiency. sheep-grazing ecosystem seems to be a source of ch4 when the stocking rate is over 0.5 sheep-units ha(-1) during the growing season in the inner mongolia steppe.
英文摘要	understanding the effects of dietary composition on methane (ch4) production of sheep can help us to understand grassland degradation resulting in an increase of ch4 emission from ruminant livestock and its resulting significance affecting ch4 source/sink in the grazing ecosystem. the objective of this study was to investigate the effect of forage composition in the diet of sheep in july and august on ch4 production by sheep in the inner mongolia steppe. the four diet treatments were: (1) leymus chinensis and cleistogenes squarrosa (lc), (2) leymus chinensis, cleistogenes squarrosa and concentrate supplementation (lcc), (3) artemisia frigida and cleistogenes squarrosa (ac), and (4) artemisia frigida, cleistogenes squarrosa and concentrate supplementation (acc). ch4 production was significantly lower in july than in august (31.4 and 36.2 g per sheep-unit per day, respectively). the daily average ch4 production per unit of digestive dry matter (dm), organic matter (om) and neutral detergent fiber (ndf) increased by 10.9, 11.2 and 42.1% for the ac diet compared with the lc diet, respectively. although concentrate supplementation in both the ac and lc diets increased total ch4 production per sheep per day, it improved sheep productivity and decreased ch4 production by 14.8, 12.5 and 14.8% per unit of dm, om and ndf digested by the sheep, respectively. our results suggested that in degraded grassland ch4 emission from sheep was increased and concentrate supplementation increased diet use efficiency. sheep-grazing ecosystem seems to be a source of ch4 when the stocking rate is over 0.5 sheep-units ha(-1) during the growing season in the inner mongolia steppe.
学科主题	生物科学
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	ecology
研究领域[WOS]	environmental sciences & ecology
关键词[WOS]	particulate passage ; dairy-cows ; cattle ; digestion ; invitro ; fluid ; diet ; n2o
收录类别	SCI
语种	英语
WOS记录号	WOS:000243463300013
公开日期	2009-12-08
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/1299]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.China Agr Univ, Inst Grassland, Beijing 100094, Peoples R China 2.NW Inst Plateau Biol, Xining 810008, Peoples R China 3.Univ Kiel, Inst Anim Nutr, D-24098 Kiel, Germany
推荐引用方式 GB/T 7714	Wang, Chengjie,Wang, Shiping,Zhou, He,et al. Effects of forage composition and growing season on methane emission from sheep in the Inner Mongolia steppe of China[J]. ecological research,2007,22(1):41-48.
APA	Wang, Chengjie,Wang, Shiping,Zhou, He,&Glindemann, Thomas.(2007).Effects of forage composition and growing season on methane emission from sheep in the Inner Mongolia steppe of China.ecological research,22(1),41-48.
MLA	Wang, Chengjie,et al."Effects of forage composition and growing season on methane emission from sheep in the Inner Mongolia steppe of China".ecological research 22.1(2007):41-48.