Table 3 Estimates of variance components, heritabilities, and genetic correlations for average daily gain (ADG) and feed conversion ratio (FCR) in Yorkshire pigs using pedigree-based univariate BLUP and univariate (UNI) or bivariate (BI) single-step genomic prediction models with or without metafounders (MF)
\(\sigma_{a\_ADG}^{2}\) | \(\sigma_{a\_ADG, a\_FCR}\) | \(\sigma_{a\_FCR}^{2}\) | \(\sigma_{pen}^{2}\) | \(\sigma_{litter}^{2}\) | \(\sigma_{e\_ADG}^{2}\) | \(\sigma_{e\_FCR}^{2}\) | \(h_{a\_ADG}^{2}\) | \(h_{a\_FCR}^{2}\) | \(r_{g}\) | |
|---|---|---|---|---|---|---|---|---|---|---|
Univariate animal model BLUP | 2039.74 (117.88) | − 1.19 (0.22) | 3.60 × 10–3 (6.47 × 10–4) | 577.24 (57.33) | 445.98 (62.07) | 5144.01 (94.21) | 1.55 × 10–2 (6.19 × 10–3) | 0.25 (0.05) | 0.19 (0.05) | − 0.44 (0.15) |
UNI_SSGBLUP | 2168.95 (116.30) | – | 3.75 × 10–3 (5.95 × 10–4) | 571.73 (56.91) | 422.21 (61.32) | 5092.61 (93.86) | 1.54 × 10–2 (5.69 × 10–3) | 0.26 (0.04) | 0.19 (0.04) | – |
BI_ SSGBLUP | 2174.28 (110.43) | − 1.28 (0.31) | 3.58 × 10–3 (5.26 × 10–4) | 568.85 (54.42) | 418.41 (70.61) | 5080.37 (100.25) | 1.56 × 10–2 (4.22 × 10–3) | 0.26 (0.03) | 0.19 (0.04) | − 0.46 (0.13) |
UNI_MF-SSGBLUP | 2305.03 (122.34) | – | 3.79 × 10–3 (6.31 × 10–4) | 570.11 (56.87) | 415.72 (61.25) | 5077.82 (93.91) | 1.56 × 10–2 (5.72 × 10–4) | 0.27 (0.03) | 0.20 (0.03) | – |
BI_MF-SSGBLUP | 2311.95 (118.92) | − 1.37 (0.22) | 3.86 × 10–3 (5.91 × 10–4) | 567.00 (60.40) | 411.53 (57.75) | 5065.37 (88.41) | 1.55 × 10–2 (5.01 × 10–4) | 0.28 (0.03) | 0.20 (0.03) | − 0.46 (0.12) |