中国农业科学 ›› 2008, Vol. 41 ›› Issue (7): 2105-2111 .doi: 10.3864/j.issn.0578-1752.2008.07.031

• 贮藏·保鲜·加工 • 上一篇    下一篇

牛尾毛中稳定性碳同位素组成变化规律研究

郭波莉,魏益民,潘家荣   

  1. 中国农业科学院农产品加工研究所/农业部农业核技术与农产品加工重点实验室
  • 收稿日期:2007-08-10 修回日期:2007-10-22 出版日期:2008-07-10 发布日期:2008-07-10
  • 通讯作者: 魏益民

The feasibility of tracing cattle life history based on carbon isotopic fingerprint analysis in cattle tail hair

Yi-min WEI   

  1. 中国农业科学院农产品加工研究所/农业部农业核技术与农产品加工重点实验室
  • Received:2007-08-10 Revised:2007-10-22 Online:2008-07-10 Published:2008-07-10
  • Contact: Yi-min WEI

摘要: 【目的】研究牛尾毛中稳定性碳同位素组成随饲料改变的变化规律,确证牛尾毛一旦长成,其中的稳定性碳同位素不再与其它部分的进行交换,每段毛发记录的同位素信息可反映毛发生长时的饲料信息。【方法】设计控制饲料配比的牛模型试验,利用同位素比率质谱仪测定不同段位牛尾毛中的δ13C值,分析不同段位牛尾毛的δ13C值随饲料改变的变化趋势,以及牛尾毛中的δ13C值与饲料、牛个体的关系。【结果】随着牛生育过程中饲料成分的改变,不同段位牛尾毛中碳同位素组成有极显著差异,而且饲料对牛尾毛中碳同位素组成的影响远大于个体对其的影响;分段取得的牛尾毛δ13C值与其饲料δ13C值、C4植物饲料比例呈极显著相关(P<0.01),而不分段的牛尾毛δ13C值与饲料碳同位素组成相关性不显著。【结论】牛尾毛一旦长成,其中的稳定性碳同位素不再与其它部分进行交换,每段毛发的同位素信息可反映牛在毛发生长时的饲料信息,牛尾毛可以看作是记录牛饲料改变信息的档案库。

关键词: 牛, 牛尾毛, 追溯, 稳定性碳同位素

Abstract: 【Objective】To verify the feasibility of tracing cattle life history using carbon isotopic analysis in cattle tail hair.【Method】The experiment of cattle model were designed by changing the feeds composition, the changed trends of δ13C values in different segment of cattle tail hair with the change of feeds composition were analyzed, and the relation of carbon isotope composition between cattle tail hair, feeds and individual were analyzed. 【Results】There was very significant difference between carbon isotopic composition in different cattle tail hair segment with the feeds composition changed, and the feeds have more effects on carbon isotopic composition of cattle tail hair than individual. The significant correlations were showed between δ13C values of cattle tail hair segment and feeds, and they were significantly correlated with the proportion of C4 plant of feeds, but there were no significant correlations between δ13C values of whole cattle tail hair and feeds, which indicated that the carbon isotopic composition of every segment of hair could reflect the feeds information when it was produced, and cattle tail hair can be regarded as an isotopic archives recording feeds changes. 【Conclusion】The cattle life history could be traced by carbon isotopic fingerprint analysis in cattle tail hair.

Key words: Cattle, cattle tail hair, traceability, stable carbon isotope