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基于骨灰的相对生物可用性和肉中明显的内皮Ca消化率的比较
1Department of Poultry Science, University of Arkansas at Fayetteville, AR 72701, USA.
Poultry science
|August 13, 2025
概括
植物酸显著降低了肉的 (Ca) 生物可用性,降低了20%. 骨灰和表面质消化性 (AID) 测定都显示出类似的减少,表明它们对评估Ca可用性的潜力.
科学领域:
- 动物营养 动物营养
- 营养素的生物利用性 营养素的生物利用性
- 禽畜科学 禽畜科学 禽畜科学
背景情况:
- (Ca) 是骨发育和肉整体健康的重要矿物质.
- 植物性料成分中常见的反营养因素 - - 酸可以结合矿物质并减少它们的吸收.
- 了解植物酸对Ca生物可用性的影响对于优化家禽饮食至关重要.
研究的目的:
- 为了确定试剂级碳酸 (RCaCO3) 在肉中含有或不含有植物酸的相对的Ca生物可用性.
- 为了比较骨灰和显而易见的乳房消化率 (AID) 方法在评估酸在植物酸的存在下生物可用性的有效性.
主要方法:
- 两项实验是使用任意养的肉进行的.
- 实验1使用斜率比方法,对不同饮食中的Ca水平进行评估,以评估骨灰 (骨灰).
- 实验2确定了使用有或没有植物酸的玉米基饮食的Ca的AID.
主要成果:
- 在实验1中,骨灰与饮食中的Ca线性增加,当添加植物酸时,相对的Ca生物利用率降低了20% (从100%降至80%).
- 在实验2中,植物酸将Ca的AID从38%降低到30%,导致相对AID为80%.
- 两种生物测试均产生了相似的相对比较结果,这表明它们适合用于评估Ca可用性.
结论:
- 酸显著降低了大约20%的肉的Ca生物可用性,无论评估方法 (骨灰或AID).
- 这些发现表明,骨灰和AID测定都是可靠的,用于评估料成分中的Ca可用性.
- 相对生物可用性值可以预测Ca消化能力,如果参考Ca源的AID是已知的.
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