Breeding and Genetics
Carcass data including Warner-Bratzler shear force, marbling score, hot carcass weight, 12-13th rib fat, and ribeye area from 589 Angus-sired steers in the National Cattlemen’s Beef Association Carcass Merit Project were analyzed to estimate heritabilities and genetic correlations. Genetic parameters were estimated using the sire/maternal-grandsire model with the relationship matrix. The heritabilities for tenderness, marbling, hot carcass weight, ribeye area and rib fat were .25, .29, .79, .59, and .07, respectively.
Iowa State University
Minick, Jennifer A.; Wilson, Doyle E.; Dikeman, M. E.; and Pollak, E. J., "Heritability and Correlation Estimates of Carcass Data from Angus-Sired Steers" (2002). Beef Research Report, 2001. 4.