Effect of betaine as a feed attractant on growth, survival, body composition and response to environmental stress in kutum (Rutilus frisii kutum) fingerling

Abstract

An 8- week feeding experiment was conducted to evaluate the effect of dietary betain as a feed attractant on growth, survival, body composition and resistance rate on kutum (Rutilus frisii kutum) fingerling. 225 fish by the initial weight of 2.26±0.2 g and density of 15 fish per tank. Five treatments of different levels of betain including 0 (control),0.5%, 1%, 1.5% and 2% added to diet containing 40% protein and 8% lipid. According to the results of this study,  no significant differences in growth performance and feeding parameters  observed between fish fed control and betain supplementation diets . No significant differences in survival rate among all treatment groups . There were no significant differences in body composition among all treatment groups . Resistance rate were not influenced by the levels of betain . Totally considering betain did not show significant  effect on the growth, surviving and resistance to stress in kutum fingerling.

Keywords

Iranian Scientific Fisheries Journal
Volume 26, Issue 1 - Serial Number 99
March and April 2017
Pages 83-92

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