Sulphur-isotope compositions of pig tissues from a controlled feeding study

Sulphur-isotope compositions of pig tissues from a controlled feeding study
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受控饲养研究中猪组织的硫同位素组成

DOI:
10.1080/20548923.2017.1368821
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发表时间:
2017
影响因子:
3.5
通讯作者:
Webb E
Webb E
中科院分区:
--
文献类型:
--
作者:
Webb E

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硫同位素测定在古饮食重建中越来越有用,但关于饮食和各种组织之间同位素区分的知识仍然不足。在本研究中,我们探讨了δ 34stisvalues对δ 34ssi值变化的敏感性,饮食和消费者之间的硫同位素区别,以及陆地和海洋蛋白质消费对这些区别抵消的潜在影响。我们对10头成熟母猪、10头仔猪和15头对照饲养猪的骨胶原、肌肉、肝脏、毛发、乳汁和粪便进行了新的δ 34s值测定。δ 34stissuvalue与δ 34sdieovalue共变,δ 34stissuvalue - δ 34sdieotopic偏移量(Δ34Stissue-diet)虽小但一致,且膳食蛋白质来源并未系统性地改变Δ34Stissue-dietisotopic的差别。这项研究的结果与仅使用碳和氮稳定同位素难以解决的问题特别相关,并且在陆地,淡水和海洋资源可能都对人类饮食有潜在贡献的地区也将有用。
Sulphur-isotope determinations are becoming increasingly useful for palaeodietary reconstruction, but knowledge of isotopic discrimination between diet and various tissues remains inadequate. In this study, we explore the sensitivity ofδ34Stissuevalues to changes inδ34Sdietvalues, sulphur isotopic discrimination between diet and consumer, and the potential impact of terrestrial vs. marine protein consumption on these discrimination offsets. We present newδ34S values of bone collagen, muscle, liver, hair, milk and faeces from ten mature sows, ten piglets and fifteen adolescent pigs from a controlled feeding study. Theδ34Stissuevalues were found to co-vary with theδ34Sdietvalues, theδ34Stissue–δ34Sdietisotopic offsets (Δ34Stissue-diet) are small but consistent, and dietary protein source does not systematically alter the Δ34Stissue-dietisotopic discrimination. The outcomes of this study are of particular relevance to questions that are difficult to resolve using carbon and nitrogen stable isotopes alone, and will also be useful in regions where terrestrial, freshwater, and marine resources could have all potentially contributed to human diet.
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期刊: Rapid communications in mass spectrometry : RCM
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