动物肝脏水分含量以及肝脏干物质含量变化的可能原因
J B J van Ryssen1, E C Webb1, J G Myburgh2
1Department of Animal Science, Faculty of Natural and Agricultural Sciences, University of Pretoria, South Africa.
Journal of the South African Veterinary Association
|June 26, 2023
概括
肝脏微量元素分析需要一致的水分含量测量. 在干物质基础上表达矿物质度可以提高动物营养研究的准确性和可比性.
科学领域:
- 兽医科学 兽医科学 兽医科学
- 动物营养 动物营养
- 分析化学 分析化学
背景情况:
- 肝脏微量元素度是动物矿物质状况,环境暴露和元素代谢的重要指标.
- 目前的方法表达这些度在湿或干肝的基础上.
- 在反动物中,肝脏水分含量的显著变化 (20-40%) 被记录在案,这使得数据解释和研究间比较变得复杂.
研究的目的:
- 为了研究可变的肝脏水分含量对微量元素分析的影响.
- 为了确定影响肝脏水分变化的因素.
- 推标准化方法来表达肝脏矿物质度.
主要方法:
- 关于肝脏微量元素分析现有研究的文献综述.
- 分析实验室数据的分析.
- 在类动物的肝脏中估计干物质 (DM) 含量.
主要成果:
- 影响肝脏水分的因素包括采样不一致,毒素,健康状况,脂肪含量和动物年龄.
- 据估计,健康的爪类肝脏 (<1%脂肪) 的平均DM含量为27.5-28.5%,或在无脂肪基础上为25-26%
- 湿度含量的高变化大大影响了湿基结果的可靠性.
结论:
- 建议在例行分析中以干物质 (DM) 为基础表达肝脏矿物质度,以尽量减少与水分有关的变化.
- 对于详细的矿物代谢研究,建议使用干燥,无脂肪的基础.
- 当使用湿基时,报告肝脏DM含量对于准确的解释至关重要.
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