Impact of Egg Storage on Embryo Development

1. New information is introduced and other information reviewed regarding the impact of egg storage on the integrity of the avian embryo. 2. Morphologically, the blastoderm from an egg which has been stored more than 10 days is often asymmetrical and may have an attenuated appearance. 3. Fresh egg breakouts coupled with the perivitelline layer sperm-hole determination procedure provide detailed informa-tion on the male's contribution to overall fertility. 4. The biological basis for embryonic mortality in eggs stored for longer than 10 days remains the subject of speculation