在肉料-动物排泄物系统中,XAS光谱学揭示了意想不到的Cu和Zn物种化模式
Marie Tella1, Samuel Legros2, Alessandra N T R Monteiro3
1US 49 Analyses, CIRAD, F-34398, Montpellier, France; Analyses, Univ. Montpellier, CIRAD, Montpellier, France.
Chemosphere
|August 2, 2023
概括
铜 (Cu) 和 (Zn) 料添加剂在肉中迅速改变物种,在肠道中形成有机复合物,在便中形成硫化物/酸盐物种. 这影响了生物可用性和土壤肥潜力.
科学领域:
- 动物营养 动物营养
- 环境科学 环境科学
- 分析化学 分析化学
背景情况:
- 像铜 (Cu) 和 (Zn) 这样的微量矿物质对于牲畜的健康和生产力至关重要.
- 这些必不可少的矿物质,当作为料添加剂补充时,可以导致由于动物排泄的环境问题.
- 了解Cu和Zn物种化从料到便的转化对于管理它们对环境的影响和生物可用性至关重要.
研究的目的:
- 研究不同铜 (Cu) 和 (Zn) 料添加剂如何影响物种化模式.
- 为了确定整个料动物排泄物系统中Cu和Zn物种的保存.
- 评估这些微量矿物质的环境命运和生物可用性.
主要方法:
- 利用基于同步的X射线吸收光谱 (XAS) 进行详细的物种分析.
- 从料添加剂通过肉的消化道到新鲜便.
主要成果:
- 在料中,Cu和Zn迅速从无机形式 (氧化物,硫酸盐) 转变为有机复合物 (植物酸盐).
- 在消化道内,Cu和Zn植物酸盐占主导地位,还有少量Cu硫化物和Zn无形酸盐.
- 新鲜排泄物主要含有硫化和 Zn 无形酸盐物种.
结论:
- 不同的Cu和Zn料添加剂诱导不同的物种化模式.
- 从料到排泄物,特异性发生显著变化,影响生物可用性.
- 这些发现有助于设计更好的料添加剂,评估矿物质的生物可用性,并了解Cu和Zn在作为肥料时在土壤中的命运.
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