Energy ingestion and conversion rate in pollock (Theragra chalcogramma) fed different prey types

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Abstract
Juvenile pollock were held at 5.5°C and fed a variety of whole crustaceans and fish tissues for which the energy content had been determined. Growth in body weight was measured relative to energy consumption. This relationship was described by the equation: growth (%bw d 1 ) = 0.044 consumption (cal g 1 d 1 ) −0.343: r 2 = 0.95. Pollock converted the energy content of crustacean and fish tissues with similar efficiency. Therefore, if prey types are converted to caloric values, the relationship between energy consumption and growth can be expressed mathematically with confidence for a range of prey taxa.

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