Factors Causing Poor Pigmentation of Brown-Shelled Eggs
Published: December 9, 2008
Summary
The first documented report of shell pigment loss in brown-shelled eggs was in 1944 when Steggerda and Hollander, while removing dirt from eggshells produced from a small flock of Rhode Island Red hens, made the surprising discovery that some of the brown pigment also rubbed off. This effect was even more evident when the eggs were rubbed vigorously. Most of the eggs gave up their pigment fairly ...
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University of Florida
University of Florida
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10 de diciembre de 2008
The depigmentation of brown shell egg to chalky white is also the first sign in case of Avian Influenza H9, which persist throught life after infection if birds recover from disease.
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11 de diciembre de 2008
I agree with the author that people usually farm manager always jumps to conclusion. They have their own way to express and diagnose problems at a farm. You can find this kind of diagnosis in almost all farms, where a manager attributes a single factor to certain disease without waiting for lab analysis. Sometimes it helps to start an early treatment, but often it resulted in treatment in the wrong direction.
Author elaborated reason for depigmentation of brown eggs and if managers read it carefully, they will not jump to conclusion and declare their veredict before going through case history and scientific analysis.
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