Table 6.
Effects of dietary threonine levels on reproductive organs and follicle development in breeder hens of yellow-feathered chickens.
| Thr supplementation (bold) and (total dietary content, %) | P-value2 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Variable | 0.00 (0.38) | 0.12 (0.50) | 0.24 (0.62) | 0.36 (0.74) | 0.48 (0.86) | 0.60 (0.98) | SEM1 | Thr | L | Q |
| Ovary weight (g) | 62.3 | 55.4 | 55.6 | 55.9 | 59.4 | 63.3 | 1.6 | 0.54 | 0.60 | 0.07 |
| Oviduct weight (g) | 63.74 | 55.08 | 58.5 | 55.3 | 58.0 | 60.7 | 1.2 | 0.29 | ||
| Large follicle number | 6.1 | 5.3 | 5.3 | 5.0 | 5.3 | 5.9 | 0.2 | 0.20 | ||
| Total large follicle weight (g) | 52.3 | 43.1 | 44.1 | 43.0 | 46.8 | 51.1 | 1.6 | 0.38 | ||
1
Means within each row with different superscripts are significantly different (P < 0.05). Standard error of the mean from ANOVA (n = 6).
2
Thr = treatment effect; when significant, linear (L) and quadratic (Q) effects were tested.