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During sea-cage rearing, Atlantic cod and haddock are fed commercial diets that have high protein content (∼50–58%) and are designed for optimum growth at temperatures of 10–12°C. However, these fish spend several months at temperatures below 5°C in Atlantic Canada, and there are data to suggest that growth could be enhanced at low water temperatures by feeding a diet with lower protein (LP) content...
Enhancement of growth of juvenile haddock (Melanogrammus aeglefinus) was achieved through photomanipulation. After 24 weeks (August-January), hatchery-reared haddock under 24 h light were 53-60% heavier than those under natural photoperiod. In a second 24-week experiment, haddock were grown under five photoperiod regimes (natural photoperiod, 12, 16, 20 and 24 h light) with two light intensities (30...
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