Stable carbon and nitrogen isotope analysis as a tool for inferring beef cattle feeding systems in Japan

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• 作者：Yuta Yanagi^a ; Hiroyuki Hirooka^a ; Kazato Oishi^a ; Yousuke Choumei^b ; Hiroshi Hata^c ; Mamoru Arai^d ; Masayuki Kitagawa^a ; Takafumi Gotoh^e ; Sunao Inada^f ; Hajime Kumagai^a ; ^{hkuma@kais.kyoto-u.ac.jp}
• 关键词：Beef ; Hair ; Traceability ; Stable isotope ratios ; Carbon ; Nitrogen
• 刊名：Food Chemistry
• 出版年：2012
• 期刊代码：48_03088146
• 类别：abs
• 出版时间：1 September, 2012
• 卷：134
• 期：1
• 页码：502-506
• 文件大小：272 K

摘要

A pilot study was conducted to evaluate the suitability of stable isotope analysis for inferring the feeding histories of cattle fed known feeds. Stable isotope ratios of carbon and nitrogen (未¹³C and 未¹⁵N) were measured in meat and hair from cattle and in their feeds at five farms in different regions of Japan, and the correlations of the isotope ratios between meat and hair were analysed. The results showed that 未¹³C values in feed depend on the photosynthesis type: C₃ or C₄. The values of 未¹⁵N in feeds varied widely, indicating divergent feeds made from plant materials that have different nitrogen origins, such as soil, chemical fertilizer, manure and air. In both cattle meat and hair, the farms differed significantly in the values of 未¹³C and 未¹⁵N. Both 未¹³C and 未¹⁵N were significantly higher in hair than in meat, and high correlations between meat and hair in both 未¹³C and 未¹⁵N were found. The results suggested that stable carbon and nitrogen isotope analysis for cattle meat and hair could be used to trace the feeding histories of cattle in Japan, and that hair samples would be used as an alternative to meat.