Marcoux M, Bernier J F, Pomar C
Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, PO Box 90-2000 Route 108 East, Lennoxville, Quebec, Canada J1M 1Z3; Département des sciences animales, Université Laval, Sainte-Foy, Québec, Canada G1K 7P4.
Meat Sci. 2003 Mar;63(3):359-65. doi: 10.1016/s0309-1740(02)00094-3.
Dual-energy X-ray absorptiometry (DEXA) was used on 110 pig carcasses to estimate fat, lean, bone mineral content and total tissue masses of the major primal cuts and overall carcasses. The DEXA estimations were compared and used to predict the dissected lean, fat (including skin), bone and weight of primal cuts and carcasses, as well as to predict the Canadian and the European lean yields. The best relationships were obtained when predicting the weight of ham (R(2)=0.99), loin (R(2)=0.99), shoulder (R(2)=0.96), belly (R(2)=0.93), half carcass (R(2)=0.98), ham lean (R(2)=0.89), loin lean (R(2)=0.89), shoulder lean (R(2)=0.87), and the meat weight used in the estimation of the Canadian (R(2)=0.92) and the European lean yield (R(2)=0.82). While the weight of fat in the carcass and primal cuts was accurately estimated by DEXA (R(2)>0.72), DEXA carcass composition estimations were less accurate when predicting dissected bone weights (R(2)<0.54).
对110头猪胴体使用双能X射线吸收法（DEXA）来估计主要原切肉块和整个胴体的脂肪、瘦肉、骨矿物质含量以及总组织质量。将DEXA估计值进行比较，并用于预测原切肉块和胴体的解剖瘦肉、脂肪（包括皮肤）、骨骼和重量，以及预测加拿大和欧洲的瘦肉产量。在预测火腿重量（R² = 0.99）、里脊重量（R² = 0.99）、肩部重量（R² = 0.96）、腹部重量（R² = 0.93）、半胴体重量（R² = 0.98）、火腿瘦肉重量（R² = 0.89）、里脊瘦肉重量（R² = 0.89）、肩部瘦肉重量（R² = 0.87）以及用于估计加拿大瘦肉产量（R² = 0.92）和欧洲瘦肉产量（R² = 0.82）的肉重量时获得了最佳关系。虽然DEXA能准确估计胴体和原切肉块中的脂肪重量（R²>0.72），但在预测解剖骨骼重量时，DEXA对胴体成分的估计准确性较低（R²<0.54）。
