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Assessment of Intramuscular Fat, Lean Growth, and Lean Composition Using Real-time Ultrasound

出版	Iowa State University, 1998
URL	http://books.google.com.hk/books?id=9x6fNwAACAAJ&hl=&source=gbs_api

註釋The correlation between real-time ultrasound predicted intramuscular fat and actual intramuscular fat was 70, while the residual variance and the standard error prediction were .66 and . 81, respectively. When real-time ultrasound predicted intramuscular fat and actual intramuscular fat were grouped into one of six classes, 71% of the predicted values were correctly classified. All misclassifications fell into an adjacent class. In the second study, pigs were, ultrasonically evaluated for tenth rib backfat (BF) and loin muscle area (LMA) at or near five target weights (Scan 1: 22.7 kg, Scan 2: 45.5 kg, Scan 3: 68.2 kg, Scan 4: 91.0 kg, Scan 5: 109 kg), After slaughter, carcass weights were recorded and carcasses were subsequently evaluated for weight of total carcass lean (TOTLN), percentage of lean (%LEAN), weight of ham lean (HAMLN), weight of loin lean (LOINLN), weight of shoulder lean (SHLN), and percentage of primal lean (%PRIMLN) using a MQ-25 electromagnetic scanner.