DOI: 10.1016/j.atmosenv.2014.05.009
Scopus记录号: 2-s2.0-84900830228
论文题名: Feces composition and manure derived methane yield from dairy cows: Influence of diet with focus on fat supplement and roughage type
作者: Møller H ; B ; , Moset V ; , Brask M ; , Weisbjerg M ; R ; , Lund P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 36
结束页码: 43
语种: 英语
英文关键词: Biogas yield
; Cattle manure
; Harvesting time
; Methane emission
; Rapeseed
; Roughage type
Scopus关键词: Anaerobic digestion
; Experiments
; Manures
; Methane
; Nutrition
; Oilseeds
; Cattle manures
; Default values
; Grass silages
; Methane emissions
; Methane Yield
; Rapeseed
; Rapeseed cake
; Roughage type
; Chemical contamination
; fat
; methane
; rapeseed oil
; biogas
; cattle
; dairy farming
; dicotyledon
; diet
; feces
; food supplementation
; harvesting
; manure
; methane
; silage
; anaerobic digestion
; article
; dairy cattle
; feces composition
; grass
; maize
; manure
; nonhuman
; plant seed
; priority journal
; rapeseed
; roughage
; silage
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The objective of the present study was to evaluate the effect of dairy cow diets on feces composition and methane (CH4) potential from manure with emphasis on fat level and roughage type and compare these results with the corresponding enteric CH4 emission. In experiment 1 six different diets, divided into two fat levels (low and high) and three different roughage types (early cut grass silage, late cut grass silage and maize silage), were used. The high fat level was achieved by adding crushed rapeseed. In experiment 2, the influence of increasing the fat level by using three different types of rapeseed: rapeseed cake, whole seed and rapeseed oil against a low fat ration with no rapeseed fat supplementation was studied. The diet and fat level had a significant influence on feces composition and CH4 yield. In general, ultimate CH4 yields (B0) were 8-9% higher than the present international default values for diets without extra fat and in feces from diets with extra fat supply the yield was 25-31% higher. It was possible to predict the B0 value from feed and feces characteristics; in fact, the best correlation was obtained by including both feed and feces characteristics. Addition of crude fat to diets to dairy cows reduced enteric CH4 emission but at the same time increased CH4 potential from feces both in terms of organic matter in feces and dry matter intake which might lead to increasing emissions unless proper manure handling such as anaerobic digestion is included. Without subsequent anaerobic digestion to produce energy the positive effect achieved at cow level could be counteracted by increasing manure emissions. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81127
Appears in Collections: 气候变化事实与影响
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作者单位: Aarhus University, Department of Engineering, Blichers Allé 20, DK 8830 Tjele, Denmark; Aarhus University, Department of Animal Science, Blichers Allé 20, DK 8830 Tjele, Denmark
Recommended Citation:
Møller H,B,, Moset V,et al. Feces composition and manure derived methane yield from dairy cows: Influence of diet with focus on fat supplement and roughage type[J]. Atmospheric Environment,2014-01-01,94