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Egg drop syndrome ’76 (EDS ‘76) is an adenovirus-induced disease characterized by the production of pale, soft-shelled, and shell-less eggs by apparently healthy laying hens.
Internal quality of eggs is unaffected.
The thin-shelled and shell-less eggs are fragile, and the birds tend to eat them; these eggs also may get trampled into litter and may be overlooked unless a careful examination is made. Although it has been shown experimentally that eggs usually continue to be produced at a normal rate (so the disease name may be a misnomer), the number of useable eggs produced falls by 10%-40%. Egg production by the flock usually returns to normal.
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26 дек 2016
