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在生长的牛肉牛中,从碳酸铜 (-C) 和三基铜化物中确定相对生物利用率

Jacob A Henderson¹, Stephanie L Hansen¹

¹Department of Animal Science, Iowa State University, Ames, IA 50011.

Journal of animal science

|July 8, 2025

概括

铜碳酸盐 (CuCO3) 和三基铜化物 (TBCC) 在基于肝铜的牛中显示生物利用率低于硫酸铜 (CuSO4). 然而,CuCO3倾向于增加循环中的,这表明铜状况可能得到改善.

科学领域:

动物营养和新陈代谢
微量矿物质的生物可用性
动物生理学动物生理学

背景情况:

铜是一种重要的微量矿物质,对牲畜的各种生理功能至关重要.
不同的铜来源在化学形式和随后的生物可用性方面有所不同.
了解铜源的生物可用性对于优化动物健康和表现至关重要.

研究的目的:

为了确定铜碳酸盐 (CuCO3) 和三基铜化物 (TBCC) 与铜硫酸盐 (CuSO4) 的相对生物利用率 (RBV) 在steers.
评估不同铜源对铜状况标志物的影响,包括肝脏和血铜度以及甲胺水平.
为了评估缺铜牛的铜补充率,养不同铜来源的牛.

主要方法:

实验1:84头公牛在96天的时间内被食补充了CuCO3,TBCC或CuSO4的5或10毫克立方米/公斤肉质.
采集了血液和肝脏样本,以测量铜度,血胺和与铜贩运相关的基因表达.
实验2:在21天的时间里,用含有不同铜源的饮食补充了5毫克立方米/公斤的铜贫的牛.

主要成果:

基于肝铜,CuCO3和TBCC的生物利用率较低 (分别为89%和88%),而不是CuSO4.
使用血铜度的来源之间没有观察到相对生物利用度的显著差异.
与CuSO4和TBCC相比,来自CuCO3的铜往往导致循环中的度更高.

结论:

铜碳酸盐和TBCC的生物可用性低于硫酸铜,当通过牛肝铜积累来评估时.
铜碳酸盐可能会提高循环中的铜水平,正如塞鲁洛普拉斯所指出的那样,这表明对铜状况的潜在好处.
需要进一步的研究来阐明影响铜生物利用率及其对动物健康的影响的复杂相互作用.

关键词:

牛肉牛牛肉牛牛肉牛生物可用性生物可用性铜碳酸盐是一种碳酸铜.硫酸铜硫酸盐是什么意思三基铜化物三基铜化物

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