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过氧化大豆油对肉生长和能量消化能力的影响

Brian J Kerr¹, Victoria C Wilson², Patrick C von Schamburg³

¹USDA-Agricultural Research Service, Ames, IA 50011, USA.

Poultry science

|January 4, 2025

概括

饮食中的过氧化物值 (PV) 和无氧化物值 (AnV) 可以预测肉的表现,较高的值表明生长和料摄入量减少. 这些脂质氧化标志物解释了高达43%的性能变化.

科学领域:

动物科学动物科学
脂质化学脂质化学
营养生物化学营养生物化学

背景情况:

过氧化脂质对肉生长和料效率产生负面影响.
饮食中的过氧化物值 (PV) 和无氧化物值 (AnV) 是脂质氧化的指标.
对于肉表现的PV和AnV的预测能力需要进一步研究.

研究的目的:

为了确定饮食PV和AnV是否可以预测肉的表现.
量化过氧化大豆油对肉生长,料摄入量和料效率的影响.
为了评估过氧化大豆油在的相对生物利用性.

主要方法:

实验1:肉 (7-35天) 被食不同水平的过氧化大豆油 (SO).
使用回归分析来建模PV,AnV和肉表现指标 (ADG,ADFI,GF) 之间的关系.
实验2:精准养的测定确定了不同SO样品的真实代谢能量,校正 (TME_n) 和相对生物利用率 (RBV).

主要成果:

由于SO的加工温度更高,导致平均每日增益 (ADG) 和平均每日料摄入量 (ADFI) 的降低.
在养在90°C处理的SO养肉时,观察到料增益 (GF) 的减少.
回归模型表明,PV和AnV解释了43% (ADG),32% (ADFI) 和27% (GF) 的绩效变化,尽管PV不是一个显著的个人预测因素.
过氧化SO与未加热的SO相比,RBV减少了12-29% .

结论:

饮食PV和AnV可以预测肉的表现,尽管相对平坦的响应斜率.
脂质氧化,如PV和AnV所示,显著影响肉生长和料利用.
这些发现支持使用PV和AnV作为指标来评估氧化脂质对家禽生产的潜在影响.

关键词:

牛肉是什么意思牛肉是什么意思可消化性可消化性业绩表现业绩表现业绩表现过氧化的脂质过氧化预测方程预测方程

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