Predicted Regression Model for Beef Carcass Yield of Liaoyu White Cattle

To investigate the predicted regression model for beef carcass yield and percentage of Liaoyu White cattle,60 cattles were slaughtered and determined 10 indicators about beef carcass yield and percentage,including carcass weight (X₁),the 5th rib thickness (X₂),product of 5th to 6th rib eye width and height (X₃),5th to 6th rib eye area (X₄),the 12th rib thickness (X₅),product of 12th to 13th rib eye width and height (X₆),12th to 13th rib eye area (X₇),the weight of kidney,heart and diaphragm fat (X₈),hind leg circumference (X₉) and thigh muscle depth (X₁₀).Then correlation and regression analysis between 10 indicators and beef carcass yield and percentage were taken using SPSS 19.0.The results showed that the correlation were the highest between X₁ and beef carcass yield,X₈ and beef carcass yield percentage.Besides,there were two credible regression model for beef carcass yield of Liaoyu White cattle:① Beef carcass yield (product of 12th rib eye width and height)=0.809X₁+0.158X₆+0.857X₈-13.967 (R²=0.986);② Beef carcass yield (12th rib eye area)=0.779X₁+0.318X₇+0.933X₈-17.779 (R²=0.990).