![]() The results reported here were from the conventional Aviagen broiler product, in the second trial.Įgg shell temperatures were recorded using Gemini data loggers feeding to a wireless broadcast system that could be interrogated in real time. Three consecutive trials were run, using two Aviagen breeds, including a high-breast-meat-yield chicken, and a competitor strain, to investigate the impact of raised incubation temperature on hatch, chick quality and broiler performance. indicate the effects of incubating eggs too hot. The results of trials conducted at the Aviagen product development center in the U.S. Set-point temperatures should also be reduced gradually farther in the hatcher. The best target egg shell temperature appears to be 37.8 C (100.0 F) from the beginning of incubation to time of transfer of the eggs to the hatcher. It is best not to think in terms of your set-point temperature program, but to adjust your set points based on the egg shell temperatures you actually measure daily. So, in the second half of the incubation period, it becomes important to gradually reduce the set point of the machine in order to prevent embryos from becoming too hot. ![]() ![]() It is not unusual for eggshell surface temperatures to be 0.2 C higher than the surrounding air. This heat has to be lost into the environment if embryo temperatures are to remain within comfortable limits (Figure 1). After nine days of incubation, embryos become more active and heat production rises daily. ![]()
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