Status of an intensive cod rearing project in Norway.
Original version
This report is not to be quoted without prior consultation with the General Secretary.Abstract
Cod yolk sac larvae were start fed with natural plancton in
plastic pens. Eggs were obtained from a plastic spawning pen
where cod spawned naturally. An attempt to incubate eggs
directly in the start feed pens failed. Planctonts were collected
with two propeller pumps coupled to double gauze cones.
Hoses led the plancton to a collecting bag from where it was
distributed to the pens by an automatic pump. Survival through
start feeding was 2,5 - 5%. A yet unexplained heavy mortality
occurred 70-100 days after hatching.