Summer: warm weather and pale eggs
Heat stress could be a major cause of pale eggs, a
condition that can impair free-range layer flocks during summer
According to Professor Sally Solomon
of the University of Glasgow
Veterinary School, examinations of affected eggs had revealed that pale eggs had
been laid six hours prematurely, at which time the pigment had not yet been laid
down. Most of the pigment is contained in the cuticle and, since thee eggs
have no cuticle, eggs appear pale.
Solomon says that this is due to heat stress, which could explain why the
problem tends to be seen during the warmer summer season. The problem seems to
disappear once the birds go inside.
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