engleski

Influence of linolenic fatty acid (18 : 3W3) additive on European sheat fish (Silurus glanis) growth bred in cages

Influence of linolenic fatty acid on productive results of sheat fish (1+) of medium individual weight 149.0-151.1 g/piece was investigated in an experiment. The feeding experiment was conducted in 4 treatments and each treatment in 3 repetitions. Thirty fishes were stocked in each of 12 cages of 1 m3 capacity. The fish from the control group was fed by standard feed for sheat fish with 45% protein (FCF-Factory of cattle feed Valpovo). Linolenic fatty acid was added to feed with the same protein level in the first experimental group 0.5%, second 1.0% and third 1.5%. Linolenic fatty acid efficiency was determined on the basis of yield feeding coefficient, SGR and PER value. The best results were achieved from the second experimental feed. Fish yield was by 12.6% higher and feeding coefficient by 12.9 lower than in the control group. SGR and PER values were by 6.08% and 12.05% better than in the control group. All above mentioned indicators in all 3 experimental groups were highly significant in relation to the control (P<0.01)

fish nutrition ; Silurus glanis ; linolenic fatty acid ; feeding coefficient ; specific growth rate

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