Long-term effects of ensiled cornstalk diet on methane emission, rumen fermentation, methanogenesis and weight gain in sheep

doi:10.1016/j.smallrumres.2013.07.011

	Long-term effects of ensiled cornstalk diet on methane emission, rumen fermentation, methanogenesis and weight gain in sheep
	Liu, C.1; Zhu, Z. P.1; Shang, B.1; Chen, Y. X.1; Guo, T. J.2; Luo, Y. M.2
刊名	SMALL RUMINANT RESEARCH
	2013
卷号	115 期号:1-3 页码:15-20
关键词	Sheep Ensiled cornstalk Methane VFA Methanogen abundance
ISSN号	0921-4488
DOI	10.1016/j.smallrumres.2013.07.011
通讯作者	Liu, C.
英文摘要	The objective of this study was to compare the long-term effects of diets rich in either ensiled or dry cornstalk at different concentrate-to-forage ratios on the methane production from sheep. A total of fifty-nine sheep (male, 25.06 +/- 0.39 kg live weight at the beginning) were randomly divided into four groups with four diet treatments as follows: ensiled cornstalk diet at 40% (CSH) and 20% (CSL) concentrate level, dry cornstalk diet at 40% (DSH) and 20% (DSL) concentrate level. At different concentrate levels, the sheep fed ensiled cornstalk diet produced a lower methane output (L/d or L/kg DM) than the sheep fed dry cornstalk diet, and the difference was significant when 20% concentrate was added in the diet (P<0.05). For the rumen fluid analysis, the VFAs concentration showed no difference between four groups, but the acetate: propionate ratio tended to decrease in the ensiled cornstalk-fed sheep in comparison to the dry cornstalk-fed sheep, especially significantly different in stage 1 and 3 (P<0.05). The methanogen abundance in the ensiled cornstalk-fed sheep was shown to be significantly lower than the dry cornstalk-fed sheep at 20% concentrate level (P<0.05). During the whole period, the weight gain was not significantly influenced (P>0.05). This result showed that ensiled cornstalk as roughage added to their diet had the effect of reducing the methane emission from sheep when fed 20% concentrate, and the decrease in acetate: propionate ratio might cause the suppression of methanogenesis by depriving of the hydrogen utilized by methanogens to produce methane. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	Agriculture, Dairy & Animal Science ; AGRICULTURE, DAIRY & ANIMAL SCIENCE
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000327225500003
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19836]
专题	农业环境与可持续发展研究所
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100193, Peoples R China 2.Xinjiang Acad Anim Sci, Feed Res Inst, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Liu, C.,Zhu, Z. P.,Shang, B.,et al. Long-term effects of ensiled cornstalk diet on methane emission, rumen fermentation, methanogenesis and weight gain in sheep[J]. SMALL RUMINANT RESEARCH,2013,115(1-3):15-20.
APA	Liu, C.,Zhu, Z. P.,Shang, B.,Chen, Y. X.,Guo, T. J.,&Luo, Y. M..(2013).Long-term effects of ensiled cornstalk diet on methane emission, rumen fermentation, methanogenesis and weight gain in sheep.SMALL RUMINANT RESEARCH,115(1-3),15-20.
MLA	Liu, C.,et al."Long-term effects of ensiled cornstalk diet on methane emission, rumen fermentation, methanogenesis and weight gain in sheep".SMALL RUMINANT RESEARCH 115.1-3(2013):15-20.