Abstract
Length, wet weight, dry weight, and the content of lipid, ash and protein of young plaice were determined. The energy content of the fish was estimated by multiplying lipid and protein content by the commonly used calorific equivalents. The data were sorted from low to high condition factor of the fish and grouped according to condition factor (K = 100·W·L −3) into 8 condition groups. Mean values of percentage body composition and energy content were calculated for each condition group. Equations giving the best fit between condition factor and the parameters of body composition and energy content are presented. From the decrease in condition factor in fasting fish the relative losses of lipid and protein energy are calculated. The accuracy of equations for the calculation of energy content of plaice from condition factor is discussed.
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