不同类型日粮奶牛体外消化性能与甲烷产生量比较

	不同类型日粮奶牛体外消化性能与甲烷产生量比较
	娜仁花; 董红敏; 陶秀萍; 马瑞娟; 习佳林
刊名	农业环境科学学报
	2010
卷号	29 期号:8 页码:1576-1581
关键词	甲烷体外消化试验日粮精粗比青贮秸秆
ISSN号	1672-2043
其他题名	Effects of Diet Composition on in Vitro Digestibility and Methane Emissions of Cows
英文摘要	为控制动物甲烷排放提供参考依据, 以奶牛为瘤胃液供体动物, 采用体外消化法进行了日粮类型对CH_4产生量及其与消化性能关系的研究. 结果表明, 日粮精粗比均为40:60的条件下, 粗料为玉米秸秆青贮日粮的CH_4产生量、消化单位干物质(DM)的 CH_4产生量、单位消化能量的CH_4产生量比粗料为干玉米秸秆日粮分别减少了30%、37%、32%, 差异显著(P<0.05); 粗料均为玉米秸秆青贮的条件下, 精粗比60:40日粮的CH_4产生量、消化单位DM的CH_4产生量、单位消化能量的CH_4产生量比精粗比40:60日粮分别减少了21%、23%、23%, 差异显著(P<0.05). 玉米秸秆经过青贮处理或适当增加日粮中精料比例可以显著减少甲烷的产生, 同时可以提高干物质消化率和消化能比例; Animal production is a major greenhouse gas emission source in agricultural sector, and ruminants are the most important animal of methane(CH_4)emissions, and mitigation of CH_4 emissions from ruminants has been a hot topic in the world. To investigate the effects of diet forage: concentrate ratio on in vitro digestibility and methane emissions of cows, two diet forage: concentrate ratios(F/C)of 40:60 and 60:40, two different forage ingredients of corn stalk silage(CSS)and dry corn stalk(DCS)were studies in vitro experiments, and the results were expected to be useful in strategy development of methane mitigation in cows in the future. The results showed that diet ingredients significantly affected CH_4 emissions(P<0.05)at a fixed F/C of 40:60,CH_4 emissions from CSS were 30%,37%and 32%less than DCS in terms of total amount,mL CH_4 emitted/kg dry matter(DM),mL CH_4 emitted/MJ digestible energy(DE), respectively. When CSS forage was selected, changing F/C from 40:60 to 60:40, the total amount of CH_4 emissions,mL CH_4 emitted/kg DM,mL CH4 emitted/MJ DE reduced by 21%,23% and 23%, respectively, significant differences(P<0.05)were observed. Therefore, both enhancing concentrate content in cow diet and silage treatment of corn stalk could reduce methane emissions and improve digestibility and DE
学科主题	环境污染及其防治
语种	中文
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/17239]
专题	农业环境与可持续发展研究所_职能部门
作者单位	中国农业科学院农业环境与可持续发展研究所, 北京, 100081
推荐引用方式 GB/T 7714	娜仁花,董红敏,陶秀萍,等. 不同类型日粮奶牛体外消化性能与甲烷产生量比较[J]. 农业环境科学学报,2010,29(8):1576-1581.
APA	娜仁花,董红敏,陶秀萍,马瑞娟,&习佳林.(2010).不同类型日粮奶牛体外消化性能与甲烷产生量比较.农业环境科学学报,29(8),1576-1581.
MLA	娜仁花,et al."不同类型日粮奶牛体外消化性能与甲烷产生量比较".农业环境科学学报 29.8(2010):1576-1581.