Effect of starvation and compensatory growth on growth and survival of Rutilus frisii kutum (Kamensky,1901)

One of the major problems in aquaculture need to achieve a balance between growth rate and optimal use of fish meal is provided. Successful breeding fish (such as kutum) to the ability to access food, nutrition and health could depend on to grow, especially in the larval stage guarantee. A compensatory growth phase of rapid growth following feed restriction in effect in such critical situations is what a lot of cellar and what has hydrothermal. This experiment for 6 weeks in the summer of 2009 and in Center for cultural and breeding of bony fish Syjuval, Bandar Turkman in Golestan province was conducted. Given the importance of factors physico chemical water and their impact on nutrition and ultimately the growth of fish, these factors all the time growing precisely control was so that the amount of dissolved oxygen against ppm 7.09 ± 0.06, the temperature equal to 24.61 ± 0.2 and pH during the test 7.98 ± 0.01 was measured. Kutum fry during the experiment with food that has SFK: moisture 8.7 %, Ash 11.2 %, protein 32 % fat and 10.5 % was fed. Experiments in four treatments and three replications following were: Treatment A: One week starvation + a week feeding, treatment B: two-week starvation + two weeks feeding, treatment C: three-week starvation + three weeks of feeding, treatment D: 6 weeks feeding complete. Feeding rate of 10 percent based on total body weight of fish a repeat fry, took a day. The results showed that treatments were between body weight of fish are significant differences observed dust (P <0.05). The highest weight gain in six weeks feeding fry were completely growth and increased starvation decreased.