图像分析多个肌肉的特征和肌肉间/皮下脂肪的影响日本黑牛肉尸体价格和遗传参数
Yuta Tamagawa1, Mikiya Takahashi1, Koichi Hagiya1
1Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080- 8555, Japan.
Animal bioscience
|January 25, 2024
概括
对瓦古牛肉特征如肌肉和脂肪含量的图像分析显著影响了尸体单位价格 (UP). 这些特征显示出遗传性和可取的遗传相关性,使它们成为肉牛遗传改进的关键目标.
科学领域:
- 动物科学动物科学
- 量化遗传学 量化遗传学
- 牛肉牛生产 牛肉牛生产
背景情况:
- 瓦格尤牛肉的尸体单位价格 (UP) 受各种因素的影响.
- 了解这些因素的遗传基础对于优化牛肉质量和经济价值至关重要.
研究的目的:
- 通过图像分析,研究尸体单位价格 (UP) 与瓦格尤牛肉的特定肌肉和脂肪特征之间的关系.
- 估计这些特征的遗传参数,以便在育种计划中潜在应用.
主要方法:
- 分析了1,807个日本黑牛 (Wagyu) 牛体.
- 利用图像分析特征 (IAT) 和统计模型,包括对方差和回归系数的分析.
- 估计IAT和尸体分类特征之间的遗传性和遗传相关性.
主要成果:
- 与肌肉 (M. trapezius dorsi,M. latissimus dorsi) 和肌肉间脂肪 (IF) 相关的图像分析特征 (IAT) 显著影响了UP (p<0.05).
- 相关IAT的遗传概率估计在0.38到0.85.5之间.
- 在特定肌肉特征和肋眼区域 (REA) 之间发现了积极的遗传相关性,而IF百分比和尸体重量,REA和产量得分之间存在负相关性.
结论:
- 瓦格尤牛肉的尸体单位价格受肌肉特征和肌肉间脂肪含量的影响,可通过图像分析进行测量.
- 这些特征具有显著的遗传性和有利的遗传相关性,与重要尸体分类特征有关.
- 图像分析特征为Wagyu牛肉生产中的遗传改进策略提供了有价值的目标.
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