Impact of Egg Storage and Prewarming Duration on Embryo Viability, Hatchability and Chick Quality


Published: May 20, 2026
Keywords:
egg incubation storage time preincubation warming hatchabil ity chick quality
T Boussaada
MA Bennoui
AS Benatallah
C Aberkane
D Ouachem
Abstract

This study investigates the effects of storage time and pre-incubation warming duration on egg weight loss, hatchability, hatching synchrony, and chick quality. A total of 3000 eggs from Cobb 500 broiler breeder stock randomly devided into two storage times (4 and 10 days) and two pre-incubation warming durations (8 and 10 hours) at  25°C. The study was conducted in a commercial hatchery with 5 replicate trays per subgroup. Results showed that neither storage time nor preincubation warming duration had a significant effect on hatchability, embryonic mortality, or chick quality metrics, except for a slight improvement in the Pasgar score with a longer prewarming duration. A key finding was the significantly improved hatching synchronization and reduced average hatching time, in eggs stored for 10 days with a 10-hour prewarming duration.which reflected by significant interaction between storage time and prewarming duration.These results confirmed that extended storage increases egg weight loss, the preincubation warming duration of 10 hours may promote to improving hatching outcomes in commercial conditions.

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