Table 2.
Estimated variance components of random effects of body weight and egg production traits of LHKK chickens
| Trait1) | Model2) | σ2a | σ2m | σ2pe | σ2p | h2a | h2m | c2pe |
|---|---|---|---|---|---|---|---|---|
| BW1D (g) | D | 1.20±0.23 | 2.96±0.51 | 3.13±0.38 | 11.51±0.33 | 0.10±0.02 | 0.26±0.04 | 0.27±0.03 |
| BW4 (g) | D | 232.65±32.31 | 47.98±19.11 | 91.40±17.03 | 1,141.78±20.34 | 0.20±0.03 | 0.04±0.02 | 0.08±0.02 |
| BW8 (g) | D | 2,645.90±264.98 | 301.01±130.00 | 379.14±104.73 | 7,860.71±153.07 | 0.34±0.03 | 0.04±0.02 | 0.05±0.01 |
| BW12 (kg) | D | 0.01±0.00 | 0.00±0.00 | 0.00±0.00 | 0.02±0.00 | 0.37±0.03 | 0.03±0.02 | 0.05±0.01 |
| BW16 (kg) | D | 0.01±0.00 | 0.00±0.00 | 0.00±0.00 | 0.04±0.00 | 0.30±0.03 | 0.04±0.02 | 0.04±0.01 |
| BW20 (kg) | D | 0.02±0.00 | 0.00±0.00 | 0.00±0.00 | 0.06±0.00 | 0.30±0.03 | 0.02±0.02 | 0.06±0.02 |
| BW24 (kg) | B | 0.03±0.00 | 0.01±0.00 | - | 0.09±0.00 | 0.30±0.04 | 0.10±0.02 | - |
| BWFE (kg) | A | 0.03±0.00 | - | - | 0.05±0.00 | 0.47±0.06 | - | - |
| AFE (day) | C | 40.49±14.74 | - | 13.95±7.58 | 246.37±10.04 | 0.16±0.06 | - | 0.06±0.03 |
| EWFE (g) | A | 3.03±0.91 | - | - | 19.40±0.77 | 0.16±0.05 | - | - |
| EN (egg) | A | 24.50±17.52 | - | - | 161.65±12.00 | 0.15±0.11 | - | - |
LHKK, Lueng Hang Kao Kabinburi; σ2a, direct additive genetic effect; σ2m, maternal genetic effect; σ2pe, permanent environmental hen effects.
1)
BW1D, body weight at day 1; BW4, BW8, BW12, BW16, BW20, BW24 are body weight at 4, 8, 12, 16, 20 and 24 weeks of age, respectively; BWFE, body weight at first egg; AFE, age at first egg; EWFE, egg weight at first egg; EN, total number of eggs laid from onset of lay to 17 weeks of lay.
2)
Model A: Y = Xb+Z1a+e, Model B: Y = Xb+Z1a+Z2m+e, Model C: Y = Xb+Z1a+Z3pe+e, Model D: Y = Xb+Z1a+Z2m+Z3pe+e