摘要
为应用牛组织中C、N同位素组成的区域分布和同位素指标溯源肉牛产地,本文利用同位素比率质谱仪(IRMS)对陕西关中不同区县来源的牛尾毛样品的1δ3C和1δ5N值进行检测,通过聚类分析,研究陕西关中地区肉牛组织中同位素组成的区域分布情况。结果表明,杨凌区、眉县牛尾毛样品聚为一类;乾县、永寿县样品聚为一类;麟游县样品聚为一类;扶风县、岐山县和凤翔县分类不十分明显,分散在上述3类中。说明陕西关中不同地区肉牛组织中同位素组成存在差异,利用它们可进行肉牛地域的小范围溯源。
In order to identify the regional distribution of carbon and nitrogen isotope in tissues of cattle in Shaanxi province, Guanzhong District, as well as to identify the origin-tracing scope of isotope for cattle, the δ13C and δ15N values in cattle tail hair from Shaanxi were determined by isotopic ratio mass spectrometry （IRMS）, and the isotopic ratio distribution in cattle tail hair were analyzed using cluster analysis. The results showed that cattle samples from Yangling District and Mei County could be classified into one classification, cattle samples from Qian County and Yongshou County were clustered into the same classification, and samples from Linyou County were separated from others. But cattle samples from Qishan County, Fufeng County and Fengxiang County could not be obviously classified according to δ13C and δ15N values, and they were distributed into different classifications. It was concluded that there were significant difference of δ13C and δ15N values in cattle tail hair from different regions in Shaanxi Province. It may be feasible to trace the cattle geographical origin by using isotopic analysis technology.
出处
《核农学报》
CAS
CSCD
北大核心
2008年第6期834-838,共5页
Journal of Nuclear Agricultural Sciences
基金
“十一五”国家科技支撑计划(2006BAK02A16)
国家自然科学基金(30671484)
关键词
同位素
溯源
产地
牛尾毛
δ13C
1δ5N
isotope
source-trace
geographical origin
cattle tail hair
δ13C
1δ5N
