Modulatory effect of pomegranate peel against cold and salinity stress in the monosex Nile tilapia, Oreochromis niloticus

A total of 360 monosex Nile tilapia (O. niloticus) fingerlings (mean individual initial weight = 30.8 ± 2.0 g) were divided into eight equal treatments, including a control. Each treatment, the control, consisted three replicates (15 fish per replicate). The in control group fed basal diet containing 25% protein. In other 7 was supplemented with pomegranate peel at rate 1, 2, 3, 5, 10, 15, or 20%. For 90 days, diets 3 times daily to 5% body weight. Afterwords, from each replicate and treatment groups exposed temperature 4oC. first mortality recorded 47.3 seconds group. While exhibited delay time compared Also, different salinities 25, 37‰ for 6 days. 100% 25 salinity, while those 15‰ salinity 0% mortality. present results showed that feeding pomegranate-enriched could improve stressors resistance tilapia.