在Langshan的同时改善乳腺肌肉产量和肉质
Junjie Chen1, Xiuze Zhang2, Lin Zhang1
1College of Animal Science and Technology, State Key Laboratory of Meat Quality Control and Cultured Meat Development, Key Laboratory of Animal Origin Food Production and Safety Guarantee of Jiangsu Province, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality, and Safety Control, Nanjing Agricultural University, Nanjing 210095, PR China.
Poultry science
|February 6, 2026
概括
提高兰山的乳腺肌肉产量改善了肉质,柔软性和保持水分的能力. 这与增加的肌肉纤维数量和特定的代谢途径有关,而不是更大的纤维.
科学领域:
- 动物科学动物科学
- 家禽遗传学 家禽遗传学
- 肉类科学 肉科学
背景情况:
- 中国原生朗山的肉质优越,但生长速度低于白肉.
- 改善兰山的乳腺肌肉产量可以显著提高它们的商业价值.
- 兰山的肌肉增长和肉质量之间的关系还不太清楚.
研究的目的:
- 为了研究乳腺肌肉产量增强对兰山肉质量,肌性能力,蛋白质沉积和代谢概况的影响.
- 为了确定增加乳腺肌肉产量是否会对这种品种的肉质产生负面影响.
- 识别导致乳腺肌肉产量和肉质量同时改善的分子和代谢机制.
主要方法:
- 屠宰15周大的朗山,并将它们分为高 (HPB) 和低 (LPB) 乳腺肌产量组.
- 评估肉类质量特征 (切割力,滴滴损失),肌肉纤维特征 (直径,密度) 和卫星细胞群 (PAX7,MYOD1).
- 分析与肌体发生和蛋白质合成/降解相关的基因表达,并执行非向的代谢学概况.
主要成果:
- 与LPB组相比,HPB组的肉质有所改善,剪切力和滴滴损失减少.
- HPB的肌肉纤维密度和卫星细胞数量增加,表明肌肉纤维更多,而不是更大.
- 在HPB组中发现了增强的蛋白质合成途径和特定的代谢物,如多可萨氨酸 (DPA),与改善的肌体差异化相关.
结论:
- 增加Langshan的乳腺肌肉产量可以同时提高肉质,柔软度和保持水分的能力.
- 这些改善与增加的肌肉纤维数量和有利的代谢特征有关,特别是不和脂肪酸.
- 这项研究为旨在改善的乳腺肌肉产量和肉质量的育种策略提供了理论基础.
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