Available Online: http://www.ejpau.media.pl/volume1/issue1/fisheries/abs-02.html
EFFECTS OF DIFFERENT DURATION OF FEEDING ON RESULTS OF CARP (CYPRINUS CARPIO) FRY CAGE CULTURE IN COOLING WATER
Jacek Sadowski, Jarosław Filipiak, Rajmund Trzebiatowski
The “Safir” trout feed (Aller Aqua) was offered to carp (Cyprinus carpio) fry of 21 + 5 g/ind. initial weight, stocked at a density of 300 ind./m3 in cages placed in cooling water. Identical rations (5 – 4.0% metabolic weight) were offered for 6, 12, and 18 h per day. The data obtained showed the best results (as indicated by SGR and FCR) of culturing carp of up to about 75 g individual weight were obtained when the feeding took 18 h, 12 – 18 h being the best duration of feeding for the carp weighing 75 – 130 g. No effect of duration of feeding was observed in the carp weighing more than 130 g.
Key words: carp, cooling water, feeding time, metabolic daily ration..