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Egg storage and breeder age impact on egg quality and embryo development
Hedia Nasri1, Henry van den Brand2, Taha Najjar1
1Department of Animal Production, National Agronomic Institute of Tunisia, Tunis, Tunisia.
Journal of Animal Physiology and Animal Nutrition
|November 7, 2019
Summary
Prolonged hatching egg storage negatively impacts egg quality and embryo survival, with effects varying by breeder age. Short storage may benefit young breeders, while long storage affects older breeders more severely.
Area of Science:
- Poultry Science
- Animal Reproduction
- Hatchery Management
Background:
- Extended hatching egg storage impacts internal egg quality and embryo viability.
- Breeder age significantly interacts with storage duration effects on hatching eggs.
Purpose of the Study:
- To review the interaction between hatching egg storage duration and breeder age.
- To assess effects on egg, embryo, hatchling, and chicken characteristics.
Main Methods:
- Literature review synthesizing existing research.
- Analysis of studies examining storage duration and breeder age effects.
Main Results:
- Prolonged storage reduces egg quality more in young than old breeders (e.g., higher albumen pH).
- Embryonic development increases with storage, more so in younger flocks.
- Short storage (<7 days) may improve hatchability in young breeders; long storage (>7 days) decreases it, especially in older breeders.
- Chicken quality declines with prolonged storage, but interactions with breeder age are unclear.
Conclusions:
- Short storage can enhance hatchability for young breeders, not older ones.
- Long storage's negative impact is less pronounced in young breeders compared to old breeders.
- Tailored storage conditions based on breeder age could mitigate negative effects on egg and chicken quality.
