Eggs with the smell of rotten fish do not necessarily come from hens that have been fed fishmeal. A genetic defect in brown layers lay cause a similar effect, especially when fed ingredients that trigger the production of the unpleasant smell.
This article can also be found at World Poultry Volume 22 number 3. To view the article online simply click on the link below.
Keywords: fishy odour, eggs, genetic, brown layers