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Ogino, A.(National Inst. of Livestock and Grassland Science, Tsukuba, Ibaraki (Japan)); Ishida, M; Ishikawa, T; Ikeguchi, A; Waki, M; Yokoyama, H; Tanaka, Y; Hirooka, H
Animal science journal, December 2008, Letnik: 79, Številka: 6Journal Article
The objectives of this study were to assess and compare the environmental impacts of two types of dairy farming systems, one of which makes use of whole-crop rice silage and the other of which is conventional, using life cycle assessment (LCA). The functional unit was defined as 1 kg of 4% fat-corrected milk (FCM). The processes associated with the dairy farming life cycle, such as feed production, feed transport, animal management including biological activity of the animal, and waste treatment were included within the system's boundaries. Environmental impacts of the rice silage-using and conventional dairy farming systems were 987 and 972 g CO2 equivalents for global warming, 6.87 and 7.13 g SO2 equivalents for acidification, 1.19 and 1.23 g PO4 equivalents for eutrophication, and 5.53 and 5.81 MJ for energy consumption, respectively. Our results suggest that the dairy farming system using rice silage in Japan has smaller environmental impacts for acidification, eutrophication, and energy consumption, and a larger impact for global warming compared with conventional farming. Further interpretation integrating these impact categories suggested 1.1% lower environmental impact of the rice silage-using dairy farming system as a whole.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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