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不同的营养系统会影响羊羔肉的柔软性和脂质氧化,但不会改变基因表达

Isabella G Silva¹, Ines Cristina Giometti¹, Caliê Castilho¹

¹Programa de Pós-Graduação em Zootecnia, Universidade do Oeste Paulista, Rod. Raposo Tavares, Km 572, 19067-175 Presidente Prudente, SP, Brazil.

Anais da Academia Brasileira de Ciencias

|November 1, 2023

概括

羊的营养影响肉质. 不同的养策略并没有改变CASP3,CAPN1,CAPN2和CAST的基因表达,但影响了体重增加和肉的柔软性.

科学领域:

动物科学动物科学
分子生物学分子生物学
食品科学食品科学食品科学

背景情况:

养习惯显著影响绵羊肉的特性和动物的表现.
了解肉质背后的分子机制对于优化生产至关重要.

研究的目的:

调查不同营养平面对母羊羔肉质量的影响.
分析与肉质特征相关的CASP3,CAPN1,CAPN2和CAST的基因表达.
确定营养策略与特定的肉质参数之间的关联.

主要方法:

雌羊羔 (n=24) 被分配到三个饮食组:牧场 (P),补充牧场 (PS) 和料场 (F).
肉质通过物理化学分析来评估,包括百分位组成,pH,脂质氧化和华纳-布拉茨勒剪切力.
使用RT-qPCR量化CASP3,CAPN1,CAPN2和CAST的相对基因表达.

主要成果:

料区完成的羊羔每天体重增加,肉中质提取物含量更高.
牧场养的羊羔由于脂质含量降低而表现出较低的脂质氧化,但具有更高的华纳-布拉茨勒剪切力,表明更坚固的肉.
在不同营养组中观察到CASP3,CAPN1,CAPN2和CAST的基因表达没有显著差异.

结论:

营养平面会影响羊肉的质量属性,例如体重增加,脂质含量和柔软度.
在这些条件下,研究的基因 (CASP3,CAPN1,CAPN2,CAST) 似乎不会被不同营养系统调节.

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