Effects of feeding frequency on nutrient digestibility and growth performance of rainbow trout (Oncorhynchus mykiss) fed a high lipid diet

Authors : Serap USTAOĞLU TIRIL, Fikret ALAGİL

Pages : 317-322

View : 10 | Download : 4

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The effect of feeding frequency on nutrient digestibility and growth performance was investigated in rainbow trout insert ignore into journalissuearticles values(Oncorhynchus mykiss); fed a high lipid diet. The experimental diet contained 25.2% crude lipid and 40.7% crude protein. Two feeding frequencies were tested: 2 meals per day insert ignore into journalissuearticles values(Group I); and 6 meals per day insert ignore into journalissuearticles values(Group II);. Fish were fed a restricted daily ration insert ignore into journalissuearticles values(1.5% of body weight); divided into equal meals. t the end of the experiment, the weight gain in Group I and II was 84.6% and 90.1%, respectively. There was no statistically significant difference between groups. The crude lipid and protein digestibility values were above 95% in both groups. The feed conversion ratios of Group I and II were 1.28 and 1.21, respectively. There was no significant difference between the 2 groups. Because nutrient digestibility, growth, and feed efficiency were not significantly enhanced when feeding was increased from twice to 6 times daily, feeding twice per day was considered to be sufficient for rainbow trout fed the high lipid diet in this experiment.
Keywords : Key words Feeding frequency, high lipid diet, digestibility, growth, Oncorhynchus mykiss