Abstract：
Yak is an important dominant livestock species at high altitude, and the growth performance of yak has obvious differences under different feeding methods. This experiment was conducted to compare the effects of different feeding practices on growth performance and meat quality of yaks through combined transcriptomic and metabolomic analyses. In terms of yak growth performance, compared with traditional grazing, in-house feeding can significantly improve the average daily weight gain, carcass weight and net meat weight of yaks; in terms of yak meat quality, in-house feeding can effectively improve the quality of yak meat. A combined transcriptomic and metabolomic analysis revealed 31 co-enriched pathways, among which arginine metabolism, proline metabolism and glycerophospholipid metabolism may be involved in the development of the longissimus dorsi muscle of yak and the regulation of meat quality-related traits. The experimental results increased our understanding of yak meat quality and provided data materials for subsequent deep excavation of the mechanism of yak meat quality.
摘要：
牦牛是高海拔地区重要的优势畜种,不同饲养方式下牦牛的生长性能存在明显差异。本试验旨在通过结合转录组学和代谢组学分析，比较不同饲养方式对牦牛生长性能和肉质的影响。在牦牛生长表现方面,与传统放牧相比，内部喂养可以显着改善平均每日体重增加，牦牛的胴体重量和净肉重量；就牦牛肉品质而言，内部饲喂可以有效提高牦牛肉的品质。联合转录组和代谢组学分析揭示了31条共同富集的途径，其中精氨酸代谢，脯氨酸代谢和甘油磷脂代谢可能参与牦牛背最长肌的发育和肉质相关性状的调节。实验结果增加了我们对牦牛肉品质的认识，为后续深入挖掘牦牛肉品质机理提供数据材料。
