Understanding the importance of hatchery ventilation

Continued genetic broiler improvement has made dramatic differences in fertility and hatchability. More embryos are now present in the setter and more chicks in the hatcher, creating additional heat production. Some older machines may not be able to maintain the correct temperatures and cooling capacity compared with the incubators of today. By Steve Tweed, hatchery specialist, Cobb World Technical Support Team We are told by scientists that embryos from modern lines of broiler, produce twice a