Back fat thickness and fat percentage of 180–day–old Large White pig and Bamei pig.

Back fat thickness (cm) = average back fat thickness over three positions = (back fat thickness at shoulder+back fat thickness at thorax–waist+back fat thickness at buttock)/3.Fat percentage (%) = (Fat weight/carcass weight)×100%; Lean percentage (%) = (Lean weight/carcass weight)×100%.背膘厚度（back fat thickness，单位：cm）= 三个测点的平均背膘厚度 =（肩部背膘厚度 + 胸腰部背膘厚度 + 臀部背膘厚度）/3。脂肪率（Fat percentage，单位：%）=（脂肪重量/胴体重）×100%；瘦肉率（Lean percentage，单位：%）=（瘦肉重量/胴体重）×100%。