Effects of dietary tauri̇n on growthperformance of hybrid tilapia (Oreochromis niloticus x O. aureus) fingerling undergreenhouse conditions

Taurine is a prerequisite for certain dietary types, especially when reducing fish meal levels in their diet. Taurine supplementation has not yet been evaluated in the hybrid tilapia (Oreochromis niloticus x O. aureus). In this study, the effect of taurine supplementation on hybrid tilapia growth parameters was investigated. Fish (2.15 ± 0.01 g) were fed into four experimental groups fed by feed with taurine concentrations of 0% (control), 5, 10 and 15g / kg in the feed and fed for 90 days until satiation. At the end of the experimental feeding period, the highest (15g / kg) taurine-supplemented group fish (34.41 ± 1.90g) were found to have higher live 6 weight gain compared to the fish in all other groups (P <0.05). The growth values ​​obtained were 32.78 ± 1.46g, 31.48 ± 0.89g, 31.88 ± 1.42g, respectively. However, it was observed that the addition of taurine to the diets adversely affected the Feed Conversion Rate of hybrid tilapia (P <0.05). The specific growth rate of hybrid tilapias fed with a high level of taurine-supplemented feed was found to be significantly higher than the other groups (3.03 ± 0.05, 2.98 ± 0.03 and 2.98 ± 0.05) (P>0.05). As a result, it can be suggested that 15 g/kg taurine supplementation may be offered to feeds in nutrition for better growth of the offspring hybrid tilapia. Key Words: Taurine, Hybrid Tilapia, Aquaculture, Fish nutrition.