Effects of dietary garlic (Allium sativum) on growth performance of hybrid tilapia fingerling under greenhouse conditions

The effect of different concentrations of garlic (Allium sativum) supplement in fish diet on growth parameters of hybrid tilapia (Oreochromis niloticus x O.aureus) fingerlings was investigated. Fish (2.57 ± 0.01 g) were divided into three experimental groups in the diet, 0% (control), 0.5% and 1% garlic concentrates and fed with satiation. At the end of the experimental feeding period, it was observed that garlic supplemented diet did not have any significant effect on weight gain of hybrid tilapia fingerlings when compared to fish in the control diet. However, final fish weight of high level garlic added group was higher (8,09±0,84g) than the others (7.41±0.64 and 7.44±0.30g) respectively (P>0.05). But Fish fed higher concentrations of garlic in diet showed significantly differences in FCR of among the groups (P<0.05). In conclusion %1 dietary supplementation of garlic in diet can be recommended for getting to better FCR in overwintering of hybrid tilapia fry under the greenhouse conditions.