Table 5.

Phenotypic (r_p) and genetic (r_g) correlations among 2 measures of bovine respiratory disease (BRD) incidence with performance traits and carcass traits estimated for a bivariate sire model

Item1	Trait2,3
	BRD incidence			NoTrt
	rp	rg	rp	rg
Weaning BW	−0.04	−0.02 ± 0.32	−0.02	0.25 ± 0.35
Birth BW	−0.03	0.07 ± 0.27	−0.00	0.30 ± 0.27
Acclimation ADG	−0.19	−0.63 ± 0.22	−0.20	−1.00 ± 0.68
On-test ADG	−0.06	−0.04 ± 0.23	−0.06	−0.04 ± 0.39
Overall ADG	−0.14	−0.31 ± 0.21	−0.14	−0.47 ± 0.41
Final BW	−0.11	−0.39 ± 0.21	−0.11	−0.66 ± 0.40
HCW	−0.09	−0.22 ± 0.22	−0.09	−0.58 ± 0.45
LMA	−0.03	−0.03 ± 0.22	−0.02	−0.12 ± 0.38
Fat	−0.07	0.24 ± 0.25	−0.07	0.42 ± 0.50
MarbS	−0.05	−0.43 ± 0.20	−0.06	−0.32 ± 0.37

¹Weaning BW = BW of cattle at weaning time; birth BW = BW at birth; acclimation ADG = early period of feedlot; on-test ADG = late period of feedlot; overall ADG = total feedlot period; fat = subcutaneous fat cover; and MarbS = marbling score.

²BRD incidence = untreated (100) vs. treated (200); NoTrt (number of treatments): 100 = nontreated cattle, 200 = cattle treated once, 300 = cattle treated twice, 400 = cattle treated 3 or more times.

³Phenotypic correlations were calculated as a ratio of phenotypic covariance estimates to the product of respective phenotypic SD estimates.