TABLE 5.
Factors influencing wooden breast occurrence in male broiler chickens and extracted by forward selection in the multivariate logistic regression analysis.
| Variable | Estimate | SE | Odds Ratio | 95% CI | p value | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| Intercept | −1.87 | 0.22 | - | - | - | <0.001 |
| Genotype | ||||||
| A (Ref) | - | - | - | - | - | - |
| B | 0.76 | 0.23 | 1.85 | 0.61 | 5.58 | <0.001 |
| C | −0.90 | 0.30 | 0.35 | 0.10 | 1.26 | <0.01 |
| Daily weight gain | ||||||
| Intermediate: 70.7–78.0 g/d (Ref) | - | - | - | - | - | - |
| Low: <70.7 g/d | −0.22 | 0.15 | 0.95 | 0.58 | 1.56 | 0.12 |
| High: >78.0 g/d | 0.39 | 0.13 | 1.75 | 1.12 | 2.73 | <0.01 |
SE, standard error; CI, confidence interval; Ref, reference. Genotype A, Ross 708; Genotype B, Ross 308; Genotype C, Cobb 500.