Respiratory metabolism and growth of atlantic salmon in relation to various levels of routine activity
MetadataVis full innførsel
OriginalversjonThis report is not to be quoted without prior consultation with the General Secretary.
Studies on the respiratory metabolism and growth of young Atlantic salmon (132 - 475 g) in seawater at 8. SOC have been conducted. The experiments were performed in the laboratory using five "growth metabolism" tanks. The average metabolic rate at swimming speeds from 5-25 cm/ sec. wer e determined and compared with similar data for sockeye salmon. Both fed and starved salmons were examined and a daily average metabolic rate of 81 ml. O2/kg/hr for starved fish (173 g) and 102ml. O2/kg/hr for fed fish were found. Both groups displayed a higher oxygen consumption during the night than at daytime due to increased activity. Growth and gross growth efficiency varied according to activity and a velocity of 15 cm/sec. (0.6 L/sec) gave the best results. Preliminary bioenergetic calculations indicated that the measured metabolic rate were in agreement with the calculated value from food-growth experiments.