Boland M A, Foster K A, Schinckel A P, Chen W, Wagner J, Berg E P, Forrest J C
Department of Agricultural Economics, Purdue University, West Lafayette, IN 47907, USA.
J Anim Sci. 1995 Mar;73(3):645-50. doi: 10.2527/1995.733645x.
Carcasses of 154 hogs representing seven genotypes with substantial variation in carcass composition and percentage of lean were completely dissected and analyzed. Measurements from a ruler, Hennessy probe, and electromagnetic scanner were each used to predict wholesale and lean boneless carcass value. Error, defined as dissected value minus predicted value, due to the omission of sex, genotype, weight, and their interactions was estimated for each model. The errors were significantly different from zero for the models using ruler and electromagnetic scanning measurements separately (P < .01). Errors due to sex, genotype, weight, and their interactions were greatest for the less lean barrows. A combination of probe and electromagnetic scanner measurements resulted in the least error. The value of barrows with low percentage of lean was consistently overpredicted, whereas the value of leaner gilts was underpredicted for the models using ruler and electromagnetic scanning separately (P < .001).
对154头猪的胴体进行了完整的解剖和分析，这些猪代表了七种基因型，其胴体组成和瘦肉百分比有很大差异。分别使用直尺、轩尼诗探头和电磁扫描仪的测量数据来预测胴体批发价值和去骨瘦肉价值。对于每个模型，估计了由于遗漏性别、基因型、体重及其相互作用而产生的误差，误差定义为解剖值减去预测值。单独使用直尺和电磁扫描测量数据的模型，其误差显著不同于零（P <.01）。对于瘦肉较少的公猪，由于性别、基因型、体重及其相互作用导致的误差最大。探头和电磁扫描仪测量数据相结合产生的误差最小。对于分别使用直尺和电磁扫描的模型，瘦肉率低的公猪的价值一直被高估，而瘦肉率较高的母猪的价值则被低估（P <.001）。
