Abstract

GARCIA-ULLOA GOMEZ, Manuel  and  HERNANDEZ-GARCIABADA, Fernando. Effect of the feeding ration on growth performance of Oreochromis mossambicus (Peters) larvae using decapsulated Artemia cysts as dietary supplement. Hidrobiológica [online]. 2004, vol.14, n.2, pp.137-144. ISSN 0188-8897.

Red tilapia larvae Oreochromis mossambicus, were cultured during the 30 days after the onset of the feeding, in order to evaluate different food rations (15, 20, 25, 30 and 35% body-weight/daily) when dried decapsulated Artemia cysts (DDC) were included in a commercial diet as a dietary supplement. Each feeding level was tested with three replicates, and given four times a day. Fish were reared in 10-L plastic containers (n = 40 fish per container) in a water recirculation system. Mean standard length, wet weight and survival were determined at the end of the experiment. Fish larvae growth increased with food ration. There were no differences in fry wet weight results for the 25, 30 and 35% body-weight/daily feeding levels (1.64, 2.05 and 1.94 g, respectively), although decrease in weight gain obtained for the 35% BW/d ration suggest that such food level was higher than the optimum. Survival was not affected for the different feeding rations tested.

Keywords : Tilapia larvae; growth; feeding ration; decapsulated Artemia cysts.

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