| If female broiler breeders are fed ad libitum then egg production and hatchability are poor. |
| By the hatchability of eggs, we then mean the percentage of eggs set that hatch chicks able to walk and eat. |
| Eggs set under hens usually give a hatchability of 50 per cent. |
| Effect of the trichothecene mycotoxin diacetoxyscirpenol on fertility and hatchability of broiler breeders. |