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The effects of chronic and periodic exposure to un-ionised ammonia (UIA) on growth and food conversion efficiency in juvenile Atlantic halibut, Hippoglossus hippoglossus were examined. Fish with a mean (SD) initial weight 51.7 (13.2) g, were exposed to five treatments consisting of a control group, three chronic groups (Chronic Low, Chronic Medium and Chronic High, ambient UIA levels of 0.06, 0.12...
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