Genetic parameter estimates of ultrasound-measured longissimus muscle area and 12th rib fat thickness in Brangus cattle.

@article{Johnson1993GeneticPE,
  title={Genetic parameter estimates of ultrasound-measured longissimus muscle area and 12th rib fat thickness in Brangus cattle.},
  author={Marsha Johnson and R. R. Schalles and Michael E. Dikeman and Bobby Golden},
  journal={Journal of animal science},
  year={1993},
  volume={71 10},
  pages={2623-30}
}
Data from 2,101 Brangus calves born from 1986 to 1990 were analyzed with a REML procedure using a derivative-free algorithm in a mixed linear animal model to obtain variance component estimates of ultrasound-measured longissimus muscle area and fat thickness. Direct additive heritabilities (ha2) of .39 and .40 were obtained for age-constant weaning and yearling longissimus muscle area (WLMA and YLMA, respectively), with a genetic correlation (rg) of .66 between them. The rg of YLMA with birth… CONTINUE READING