利用眼肌深度预测猪活体眼肌面积  

Prediction of loin eye muscle area in live pig using loin eye muscle depth

作　　者：倪德斌[1] 赵书红[1] 夏欣[1] 胡军勇[1] 刘望宏[1] 马云龙 NI Debin;ZHAO Shuhong;HU Junyong;LIU Wanghong;MA Yunlong(Breeding Swine Quality Supervision,Inspecting and Testing Center(Wuhan),Ministry of Agriculture,Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]华中农业大学农业部种猪质量监督检验测试中心(武汉),武汉430070

出　　处：《华中农业大学学报》2018年第4期126-130,共5页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金地区间重大合作项目(31361140365);国家生猪产业技术体系项目(CARS-35)

摘　　要：采用胴体性状测定方法对286头猪胴体进行测定,采用B超测定方法对357头猪活体进行测定,通过分析286头猪胴体测定数据(宰前活体质量、背膘厚、眼肌深、眼肌宽、瘦肉率等)和357头猪活体测定数据(结测质量、背膘厚、眼肌深、眼肌面积),建立胴体与活体2个预测模型并加以验证。结果发现:胴体眼肌深与眼肌面积的相关系数(0.945)高于活体(0.720),胴体模型的决定系数(R2)值(0.894)高于活体模型的R2值(0.519);胴体模型预测值与实测值的散点分布相对一致,而活体模型预测值与实测值的散点分布则较分散;胴体模型预测值与实测值的相关系数为0.497,活体模型为0.672,均为极显著正相关;经t检验,胴体模型预测值与实测值差异不显著,活体模型则差异极显著。本研究结果表明,用眼肌深度预测猪活体眼肌面积是可行的,但预测值的准确性仍需进一步研究。To predict loin eye area in live pig using loin eye depth,traits of 286 carcasses and 357 live pigs were measured by standard method and B-mode ultrasound scanner,respectively.The traits data from the 286 carcasses(live weight at slaughter,back fat thickness,loin eye depth,loin eye width,loin eye area and lean percentage)and 357 live pigs(live weight at end,back fat thickness,loin eye depth and loin eye area)were analyzed to set up the prediction model of loin eye area,respectively and the prediction model was verified.The results showed that the correlation coefficient between loin eye depth and loin eye area of the carcass model(0.945)was higher than that of the living model(0.720);the determination coefficient(R 2)of the carcass model(0.894)was higher than that of the living model(0.519).The predicted values were consistent with the measured values of the carcass model,while the predicted and measured values of the living model were more dispersed.The correlation coefficient between the predicted and measured loin eye area was 0.497 for carcass,and 0.672 for live pig,which were significantly positively related.There was no difference between the prediction and measurement data in the carcass model,while significant difference was observed in the living model.The results showed that it is reasonable to predict the live pig loin eye area with the carcass model,but further research is needed to improve the accuracy.

关 键 词：猪 B超 预测模型 眼肌深 眼肌面积 

分 类 号：S813.2[农业科学—畜牧学]