Table 5.
Environmental variances (diagonals), covariances (above the diagonals), heritability estimates (h2) and genetic correlation coefficients (below the diagonals) of growth and ultrasound measures by breeds
| Breed | Trait | Model I | Model II | Model III | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| DAYS90 (d) | BF (mm) | EMA (cm2) | RCP (%) | DAYS90 (d) | ABF (mm) | AEMA (cm2) | ARCP (%) | DAYS90 (d) | ABF (mm) | AEMA (cm2) | ARCP (%) | ||
| Landrace | DAYS90 | 56.73 | −5.67 | −6.50 | 3.81 | 57.15 | −0.22 | −0.93 | 0.39 | 57.09 | 1.16 | 4.62 | −0.43 |
| (A)BF | −0.36 | 4.49 | 0.50 | −2.16 | −0.02 | 2.73 | −0.48 | −1.32 | 0.09 | 2.78 | −0.29 | −1.34 | |
| (A)EMA | −0.20 | 0.05 | 18.44 | 1.81 | −0.03 | −0.08 | 15.29 | 2.30 | 0.15 | −0.04 | 16.07 | 2.24 | |
| (A)RCP | 0.26 | −0.53 | 0.22 | 3.68 | 0.03 | −0.45 | 0.33 | 3.22 | −0.03 | −0.45 | 0.31 | 3.22 | |
| Yorkshire | DAYS90 | 60.94 | −6.01 | −7.25 | 4.10 | 61.25 | −0.95 | −0.86 | 1.15 | 61.27 | 0.86 | 3.50 | 1.00 |
| (A)BF | −0.36 | 4.69 | 0.52 | −2.37 | −0.07 | 3.23 | −0.64 | −1.62 | 0.06 | 3.29 | −0.47 | −1.63 | |
| (A)EMA | −0.22 | 0.06 | 17.94 | 2.19 | −0.03 | −0.09 | 15.07 | 2.80 | 0.11 | −0.07 | 15.53 | 2.75 | |
| (A)RCP | 0.26 | −0.53 | 0.25 | 4.20 | 0.08 | −0.46 | 0.37 | 3.79 | 0.01 | −0.46 | 0.36 | 3.79 | |
| Duroc | DAYS90 | 58.37 | −5.28 | −6.12 | 3.76 | 58.80 | −0.57 | −0.91 | 1.33 | 58.74 | 1.32 | 4.43 | −0.24 |
| (A)BF | −0.35 | 3.87 | 0.92 | −1.72 | −0.05 | 2.14 | −0.11 | −1.02 | 0.12 | 2.24 | 0.21 | −1.06 | |
| (A)EMA | −0.19 | 0.11 | 16.97 | 1.76 | −0.03 | −0.02 | 13.47 | 2.10 | 0.15 | 0.04 | 14.28 | 1.91 | |
| (A)RCP | 0.26 | −0.47 | 0.23 | 3.47 | 0.10 | −0.40 | 0.33 | 3.02 | −0.02 | −0.41 | 0.29 | 3.02 | |
DAYS90, days to 90 kg body weight; BF, backfat thickness; EMA, eye muscle area; RCP, retail cut percentages; ABF, pre-adjusted backfat thickness; AEMA, pre-adjusted eye muscle area; ARCP, pre-adjusted retail cut percentages.