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期刊名称: Journal of Agricultural Science
Volume:155    Issue:2        Page:334-347
ISSN:0021-8596

Dietary options to reduce the environmental impact of milk production期刊论文

作者: Wilkinson J.M Garnsworthy P.C
DOI:10.1017/S0021859616000757

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页码: 334-347
被引频次: 4
出版者: CAMBRIDGE UNIV PRESS,Cambridge University Press
期刊名称: Journal of Agricultural Science
ISSN: 0021-8596
卷期: Volume:155    Issue:2
语言: English
摘要: A range of options was explored to test the hypothesis that diets for dairy cows could be formulated to reduce the carbon footprint (CFP) of feed, increase efficiency of conversion of potentially human-edible feed into milk, increase nitrogen use efficiency (NUE) and reduce methane (CH4) emissions per kg milk. Diets based on grazed grass, grass silage, maize silage or straw, supplemented with raw material feeds, were formulated to meet requirements for metabolizable energy and metabolizable protein for a range of daily milk yields. At similar levels of milk yield, NUE, predicted CH4 emissions and diet CFP were generally higher for diets based on maize silage than for those based on grazed grass, grass silage or straw. Predicted CH4 emissions and human-edible proportion decreased, while NUE increased with the increasing level of milk yield. It is concluded that there is potential to reduce the environmental impact of milk production by altering diet formulation, but the extent to which this might occur is likely to depend on availability of raw material feeds with low CFPs.
相关主题: METHANE EMISSIONS, SILAGE, PROTEIN, FARMS, AGRICULTURE, MULTIDISCIPLINARY, GRASS, NITROGEN, SHEEP, INDIVIDUAL DAIRY-COWS, Dairy farms, Feeds, Cattle, Environmental impact, Animal care,

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