ANSI 2233 Lecture Notes - Lecture 4: Rib Cage, Gestation
Document Summary
Measured by the number of days it takes to reach 250 pounds. Used to estimate pounds or percent acceptable quality lean pork in the carcass. Three traits used to predict: fat depth over loin at the tenth rib, loin muscle area, carcass muscling score. Hampshire: oldest american breed, black with a white belt, small erect ears, heaviest muscled. Yorkshire: (cid:862)large white(cid:863, white in color, large erect ears, (cid:862)the mother breed(cid:863, large litters. Duroc: solid red, drooped ears, slight dish to the face, excellent meat type hog. Spot: black and white spots, efficient feeders, noted for rapid weight gain. Poland: black with white snouts, legs, and switch, generally poor mothers, drooped ears, quiet dispositions, noted for ability to easily gain weight. Chester white: white with drooped ears, mothering breed, known for large litters. Landrace: drooped ears, good maternal instincts, white, long bodied. Berkshire: black with white legs, snout and switch, known for producing high quality meats, erect ears.
