author(s)
Sanishth Sikotariya and SI Yusufzai

abstract
The experiments were conducted using feed prepared with supplementation of Tulsi powder to know their effect on growth performance and survival rate in Cirrhinus mrigala fingerlings (2.65 ± 0.02g). Fingerlings were stocked at a density of 10 nos./experimental tank. Experimental diets were formulated with 35% protein level. In this experiment 10 diets were prepared. T0 diets were considered as control. Tulsi were added at the rate of 5g, 10g, 20g and 50g per kg of feed in T1, T2, T3 and T4 respectively. The experimental feed was given at the rate of 10% of body weight of the fish twice daily. After 10 days, feeding was decreased to 4% of body weight. After 60 days, Results showed that mean weight gain (%), Specific Growth Rate, Protein Efficiency Ratio and survival were significantly higher in T3. The significantly lowest Feed Conversion Ratio was recorded in T3 (2.66± 0.07) respectively. The survival rate was higher in T3 (97.75±0.75), but it was not significantly different among treatments. The results of the present investigation revealed that the supplementation of Tulsi in the diet of C. mrigala fingerlings significantly affected the mean weight gain (%), SGR, PER and survival rate.