Determination of optimum feeding rate expressed as percent of body weight in Persian sturgeon, Acipenser persicus

The present study was conducted to determine the best feeding rates expressed as percent of body weight in Persian sturgeon fingerlings at different body weights. Eighteen fiberglass tanks each holding ۳۰ fingerlings with an average initial body weight of ۱۹.۴۵ ± ۰.۵ g were used in this experiment. Six different feeding trials (۱, ۲, ۳, ۴, ۵ and ۶ percent of body weight) were employed and each trial was run in three replicates through a period of ۶۰ days (۴ periods of ۱۵ days). The results were analyzed using Statgragh software and compared using Duncan test. The optimum recommended feeding rate was ۴ percent of body weight for an increase of body weight from ۱۹.۵ to ۳۱g and ۳ percent of body weight for an increase of body weight from ۳۳ to ۴۷g. For an increase in body weight from ۴۷ to ۹۰g the recommended feeding rate was ۳ percent of body weight. The recommended doses are subject to alteration with variation in water temperature. 

Keywords:

Persian sturgeon , Acipenser persicus , Feeding , Body weigth