Growth and Feed Conversion Ratios of Albino and Normal Pigmented Rainbow Trout (Oncorhynchus mykiss

Abstract

Here, we have compared the growth performance, daily feed consumption and feed conversion ratio of albino, normally pigmented rainbow trout (Oncorhynchus mykiss) and mixed group (albino and normally pigmented rainbow trout) which was subject to pure and mixed species culture conditions. In the study, initial average fish weights were 1.64±0.1g. Groups were normal pigmented rainbow trout (50), mixed (normal (25), albino (25)) and pure albino (50). The 120 day experiment was conducted as three groups and two replicates for each group. At the end of the study, average final weights were 19.3 g (pure normal), 17.2 g (pure albino) and 15.3 g mixed (normal and albino) were significantly different (P 0.05). But, feed conversion ratio in mixed group was found slightly lower than others.