Abstract
In the present study will investigate the effect of duration of hatching period on the quality and performance chicks ahead or not to heat stress. For this, three experiments will be performed. In experiment 1, fertile eggs of broilers (Cobb ®) will be incubated at 37.5 ° C and 60% RH up to 12 days. From the 13th day of incubation to hatching incubators two will be maintained at 37.5 ° C …