Optimum dietary protein level for growth of bighead carp (Aristichthys nobilis) fry in a static water system.
Isoenergetic diets with digestible energy 290 kcal/100 g with protein ranging from 20 to 50% in increments of 5% were fed to bighead carp fry, (weight 3.8 mg and length 9.8 mm) for 7 weeks. Weight and length increased with increasing dietary protein from 20 to 30% and decreased as the protein level increased further. Although not significantly different from those of fry given 25 or 35% protein, weight gain (250 mg) and increase in total length (15.7 mm) were highest for fry fed on the 30% protein diet. Feed conversion, protein efficiency and survival rate were not different.