Effect of Eggshell Temperature and Drilling a Hole in The Air Cell on Survival and Development in Layer Hatchlings
Poster Presentation on the XIIIth European Poultry Conference, August 2010, by Roos Molenaar*
Roos Molenaar*, Sonja de Vries†, Ilona van den Anker†, Ron Meijerhof‡, Bas Kemp†, and Henry van den Brand†
*HatchTech Incubation Technology B.V., P.O. Box 256, 3900 AG Veenendaal, the Netherlands; †Adaptation Physiology Group, Wageningen Institute of Animal Sciences, Wageningen University, P.O. Box 338, 6700 AH Wageningen, the Netherlands; ‡Poultry Performance Plus, Kleine Enkweg 1, 7383 DB Voorst, the Netherlands.
In broilers, high eggshell temperatures negatively affect hatchability, chick quality and subsequent performance. In practice, a higher embryo mortality is found in layer than broiler embryos at the end of incubation and this may be related to gas exchange. Therefore, this study evaluated effects of eggshell temperature (EST) and improving gas exchange by drilling a hole in the air cell on survival and development in layer hatchlings.