The effect of feeding frequency on growth performance of rainbow trout fingerlings reared in recirculating system.
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2011, Vol 4, Issue 2
Abstract
Growth, feed consumption and conversion ratios of trout fingerlings (Oncorhynchus mykiss) subjected to daily feeding frequencies were evaluated. The trial performed using 295 fish with a mean weight of 5.53±0.25 g divided equally to four tanks. The two treatments (namely, daily feeding frequencies of two -F1 and four meals- F2) were each applied for two tanks. Mean live weights of the fish in trial groups reached 13.15 g and 13.61 g at the end of the trial in groups F1 and F2, respectively. Growth data indicated that, the final live weight and SGR values of group F2 were similar with those of the F1 group (4.22%/bw/day respectively 4.19%/bw/day). Condition factors (CF) showed similar values. It seems that, rainbow trout fed twice a day performed better than those fed four times a day, in terms of feed conversion ratio (FCR) and protein efficiency ratio (PER) (FCR was 0.55 in F1 and 0.63 in F2; PER was 4.33 in F1 and 3.8 in F2).
Authors and Affiliations
Lorena Dediu, Victor Cristea, Mirela Mocanu, Desimira Dicu, Angelica Docan, Iulia Grecu
Keywords
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