TABLE 4.
Factors influencing white striping occurrence in broiler chickens extracted by forward selection in the multivariate logistic regression analysis.
| Variable | Estimate | SE | Odds Ratio | 95% CI | p value | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| Intercept | 0.55 | 0.12 | - | - | - | <0.001 |
| Genotype | ||||||
| A (Ref) | - | - | - | - | - | - |
| B | 0.18 | 0.13 | 2.18 | 1.28 | 3.71 | 0.16 |
| C | 0.41 | 0.19 | 2.75 | 1.37 | 5.52 | <0.05 |
| Breast weight | ||||||
| Intermediate: 850–960 g (Ref) | - | - | - | - | - | - |
| Low: <850 g | −0.50 | 0.10 | 0.57 | 0.41 | 0.80 | <0.001 |
| High: >960 g | 0.45 | 0.11 | 1.49 | 1.03 | 2.15 | <0.001 |
| Breast yield | ||||||
| Intermediate: 39.0–40.7% (Ref) | - | - | - | - | - | - |
| Low: <39.0% g | −0.21 | 0.10 | 0.82 | 0.58 | 1.15 | <0.05 |
| High: >40.7% | 0.22 | 0.10 | 1.27 | 0.89 | 1.81 | <0.05 |
SE, standard error; CI, confidence interval; Ref, reference. Genotype A, Ross 708; Genotype B, Ross 308; Genotype C, Cobb 500.