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Liver biomass was 17.6% of the entire body weight, suggesting haddock had problem in using dietary lipid. Thereafter, on indications of elevated liver weights, fish had been fed each second day. All fish in this feeding periodicity experiment were sacrificed at 12 weeks, and length, whole physique, and liver weight measured. April 2003. Alternative feeding regimes had been examined experimentally at the Ardtoe hatchery by feeding completely different groups of fish each day or every second or third day, over a 12-week trial interval, with three replicate tanks per regime. Feeding fee of haddock grown in onshore tanks as a percentage of body weight per day. Fillet yield as headless, gutted, and boneless was assessed as a percentage of entire physique weight. Dead fish had been removed from the tanks each day and reported as numbers of mortalities per month, and as a percentage of inventory measurement. Fish had been fed EWOS Marine weight loss plan (14% lipid) with pellet size rising from 2 mm on stocking to 5 mm for fish of 150-300 g, 7 mm for 800-g fish, and 10-mm pellet measurement for heavier fish. A weight-reduction plan of EWOS Marine (5 mm) was hand fed and the amount recorded.
Mean weight, FCR, and SGR in fish fed daily or every second and third days had been compared by ANOVA, and publish hoc comparisons had been made with Tukey’s HSD test. The expansion rates of haddock had been in contrast with cod stocked in July 2002 at 15-g imply weight in 24-m3 tanks at the same farm from the identical supply hatchery. 0.008) compared with cod. The precise growth rate of haddock was comparable to Atlantic cod (Gadus morhua) throughout the primary 12 months but decreased by 20% after that. The thermal growth coefficient of haddock in tanks was 1.54 but declined after nine months within the netpens to 0.Eighty two and remai