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Turkish Journal of Fisheries and Aquatic Sciences 2007, Vol 7, Num, 1     (Pages: 13-17)

The Effect of Feeding Frequency on Growth Performance and Feed Conversion Rate of Black Sea Trout (Salmo trutta labrax Pallas, 1811)

Nadir Başçınar 1 ,Eyüp Çakmak 2 ,Yahya Çavdar 2 ,Nilgün Aksungur 2

1 Karadeniz Technical University, Faculty of Marine Sciences, Department of Fisheries, 61530 Çamburnu, Trabzon, Turkey
2 Ministry of Agriculture and Rural Affairs, Central Fisheries Research Institute, P.O.B. 129, 61001, Trabzon, Turkey
Viewed : 1025 - Downloaded : 1473 Growth, feed consumption and conversion ratios of Black Sea trout (Salmo trutta labrax Pallas, 1811) subjected to daily feeding frequencies were evaluated. The trial performed using 360 fish with a mean weight of 155.9±31.56 g was sampled, counted and divided equally to nine tanks. The three treatments (namely, daily feeding frequencies of one - F1, two - F2 and three - F3) were each applied to three tanks. Mean live weights of the fish in trial groups reached 201.7±3.42 g, 202.7±3.18 g and 217.6±2.54 g at the end of the trial in groups F1, F2 and F3, respectively. Growth data indicated that, the final live weight and SGR values of group F3 were significantly higher than those of the other groups (P<0.01). The best (lowest) mean FCR was obtained from once daily feeding (F1) (P<0.05). Condition factors (CF) showed similar values. It seems that, Black Sea trout fed once a day grow lower than those fed two or three times a day, but FCR was the best than the other groups. Keywords : Black Sea trout, Salmo trutta labrax, feeding frequency, growth, feed consumption and conversion ratios, condition factor