Şen Uğur, Gökçek Dilek, Yılmaz Ömer Faruk, Yüksel Hüseyin Mert, Önder Hasan, Şirin Emre, Bozkurt Sibel, Yetişgin Sezen Ocak, Yücel Ceyhun, Omarova Karlygash, Tyasi Thobela Louis
Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, 55139 Samsun, Türkiye.
Department of Animal Science, Faculty of Agriculture, Ondokuz Mayis University, 55139 Samsun, Türkiye.
Animals (Basel). 2024 Dec 25;15(1):16. doi: 10.3390/ani15010016.
The objective of this study was to determine the relationship between the MRF gene family members and slaughter characteristics in Saanen kids with varying slaughter weights. Twenty male kids of the Turkish Saanen breed were individually fattened for 60 days after weaning under an intensive management system. The kids were divided into two groups: low slaughter weight (L; = 11; ≤29 kg) and high slaughter weight (H; = 13; >29) at the end of the fattening. After slaughter, muscle samples from Longissimus-dorsi (LD) and Semitendinosus (ST) muscles were obtained. Carcass characteristics were higher in H than in L kids ( < 0.05). gene expression level in the LD muscle of H kids was higher ( < 0.05) than that of L kids. A similar trend was observed regarding and gene expression levels in the LD muscle ( < 0.05). Also, the gene expression level of H kids was higher than that of L kids in both muscles ( < 0.05). There were positive correlations among the slaughter weight, carcass characteristics, and some MRF gene expression levels in both muscles ( < 0.05) that the higher gene expression increases the weight and affects the carcass characteristics. The study results suggest that the difference in slaughter weight at the end of fattening in Saanen kids may be due to the expression level of myogenic regulatory factor (MRF) genes. Fattening performance and MRF genes may have a positive correlation.
本研究的目的是确定不同屠宰体重的萨能山羊幼崽中MRF基因家族成员与屠宰特性之间的关系。20只土耳其萨能品种的雄性幼崽在断奶后采用集约化管理系统单独育肥60天。育肥结束时，将幼崽分为两组：低屠宰体重组（L组；n = 11；≤29 kg）和高屠宰体重组（H组；n = 13；>29 kg）。屠宰后，采集背最长肌（LD）和半腱肌（ST）的肌肉样本。H组幼崽的胴体特性高于L组（P < 0.05）。H组幼崽LD肌肉中的MyoD基因表达水平高于L组（P < 0.05）。在LD肌肉中，MyoG和MRF4基因表达水平也观察到类似趋势（P < 0.05）。此外，H组幼崽在两块肌肉中的Myf5基因表达水平均高于L组（P < 0.05）。两块肌肉的屠宰体重、胴体特性和一些MRF基因表达水平之间存在正相关（P < 0.05），即较高的基因表达增加了体重并影响胴体特性。研究结果表明，萨能山羊幼崽育肥结束时屠宰体重的差异可能归因于生肌调节因子（MRF）基因的表达水平。育肥性能与MRF基因可能存在正相关。
