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thin-shelled egg

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thin-shelled egg
thin egg shells can be caused by a nutritional deficiency of calcium, phosphorus, vitamin D, copper or manganese. Other causes are sulfonamides in the diet, end of the laying season, a diet contaminated by DDT and diseases at a chronic or subclinical level, e.g. infectious bronchitis. See also thin-shelled egg.


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Symptoms include sneezing, coughing and gasping for air; nasal discharge; greenish, watery diarrhea; depression, muscular tremors, drooping wings, twisting of the head or neck; drop in egg production and thin-shelled eggs, swelling around the eyes and neck or sudden death.
Instead, the male builds a large mound of leaf litter and other organic material in which the hen lays and buries numerous thin-shelled eggs.
Other threats, such as contaminants from industrial and agricultural sources, are often unseen until they cause fish die-offs, malformed frogs, or thin-shelled eggs.
 
 
 
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