Effects of sex on meat quality traits, amino acid and fatty acid compositions, and plasma metabolome profiles in White King squabs

文献类型： 外文期刊

第一作者： Dai, Zichun

作者： Dai, Zichun;Zhu, Huanxi;Chen, Zhe;Guo, Binbin;Yan, Leyan;Dai, Zichun;Zhu, Huanxi;Chen, Zhe;Guo, Binbin;Yan, Leyan;Feng, Mengwen;Feng, Chungang

作者机构：

关键词： pigeon meat; amino acid composition; lipogenesis; metabolomics; sexual dimorphism

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2024 年 103 卷 4 期

页码：

收录情况： SCI

摘要： The objective of this study was to investigate the effects of sex on meat quality and the composition of amino and fatty acids in the breast muscles of White King pigeon squabs. Untargeted metabolomics was also conducted to distinguish the metabolic composition of plasma in different sexes. Compared with male squabs, female squabs had greater intramuscular fat (IMF) deposition and lower myofiber diameter and hydroxyproline content, leading to a lower shear force. Female squabs also had higher monounsaturated fatty acid and lower n-6 and n-3 polyunsaturated fatty acid proportions in the breast muscle, and had greater lipogenesis capacity via upregulation of PPARg, FAS and LPL gene expression. Moreover, female squabs had lower inosine 50-monophosphate, essential, free and sweet -tasting amino acid contents. Furthermore, Spearman's correlations between the differential plasma metabolites and key meat parameters were assessed, and putrescine, N-acetylglutamic acid, phophatidylcholine (18:0/P-16:0) and trimethylamine N -oxide were found to contribute to meat quality. In summary, the breast meat of male squabs may have better nutritional value than that of females, but it may inferior in terms of sensory properties, which can be attributed to the lower IMF content and higher shear force value. Our findings enhance our understanding of sex variation in squab meat quality, providing a basis for future research on pigeon breeding.

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