以基因表达为基础的肉牛肌间脂肪含量预测模型

来源 :2015第三届中国肉牛选育改良与产业发展国际研讨会 | 被引量 : 0次 | 上传用户：wuyouan321

【摘要】

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【作者】

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郭兵张万刚徐幸莲 Aaron B.Ingham Nick J.Hudson Brian Dalrymple 周光宏

【机构】

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南京农业大学食品科技学院,国家肉品质量与安全控制工程技术研究中心,肉品加工与质量控制教育部重点实验室,农业部畜产品加工重点实验室,南京,中国,210095;建明工业(珠海)有限公司,珠海,中国,519

【出处】

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2015第三届中国肉牛选育改良与产业发展国际研讨会

【发表日期】

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2015年6期

【关键词】

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肉牛肌间脂肪含量预测模型基因表达

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本试验依据胴体重(hot slaughter carcass weight,HSCW)与肌间脂肪沉积的指数生长经验理论,以品种、年龄和肌间脂肪含量水平不同的牛为研究对象,建立以qPCR为基础的肉牛肌间脂肪含量预测模型.结果表明:IMF5中单个基因的表达水平与肌间脂肪含量的相关性不强.5个基因的表达量进行拟合后与肌间脂肪含量的相关性并未获得明显提升.但在排除两组离群动物的干扰后,IMF5与肌间脂肪含量的相关性得以大幅提高(从0.2到0.8).基于胴体重、肌间脂肪含量和IMF5表达水平的综合分析显示,上述两组离群动物未来的肌间脂肪含量水平将分别保持恒定或短期内大幅提升,而其余动物的肌间脂肪含量将会沿着指数生长曲线以正常速率沉积.

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