Department of Fisheries and Wildlife Science The Effects ofdifferent Nigella sativa meal and oil levelon Growthperformance ,toxitity and enzymes in Nile Tilapia

Abstract

Using Statistical Analysis `the obtained data in this study were subjected to one-way (ANOVA) analysis of variance (snedecor,andCochranl, 1986),(Sokal,and Rohlf,1981). Data were entered and analyzed using Statistical Package for Social Sciences program (SPSS) for Windows. This study was conducted to investigate the immune modulation effects of Negilla sativameal andoil as feed additives for Nile Tilapia (Oreochromisniloticus), influence of such additives on the digestive enzyme activities, to determine the effects of cumin on the feed conversion rate (FCR) in Nile tilapia (O. niloticus). The results showed that the diet containing 10 and 15% Negilla sativa meal improved significantly (P>0.05) growth rate compared with Negilla sativa oil 6 and 12% .The effects on serum protein and enzyme levels were investigated. Although the activity of alkaline phosphates increased over experimental period between treatments, the increases were statistically significant. The results showed the effect of chloride solution for fish fed the Negilla sativa meal 15% more resistant to stress and toxicity . Key Words: Specific Growth Rate (SGR)-Survival Rate (SR) - Feed Conversion Ratio (FCR) - Protein Efficiency Ratio (PER)