The Protein Requirement of Pla Swai Fry, Pangastus sutchi Fowler

Abstract

Seven experimental diets containing 20, 25, 30, 35, 40, 45, and 50% protein were fed to pla sawai fry in twenty-one 350-liter circular concrete tanks for 60 days. Each dietary treatment was randomly assigned to three tanks which were stocked with 100 fish. Fish were fed seven days a week at the rate of 10% of fish body weight, and their dairy feed allowances were increased weekly on the basis of fish weight gain. Growth for each diet was compared along with survival rates and feed conversion ratios. Statistical analyses indicated that of the diets tested, a diet containing 25% protein produced optimum growth.