In connection with the global demand for safe human food and the production of environmentally friendly aquaculture products, acidifiers are natural organic acids and salts that have received considerable attention as animal-feed additives. The current study was designed to evaluate the effects of potassium diformate (KDF) on the growth performance and immunity of cultured Oreochromis niloticus (O. niloticus). Four iso-nitrogenous and iso-caloric rations containing graded levels of KDF, including 0% (control basal diet), , and , were fed separately to four equal fish groups (30 fish/group with an initial body weight of ± g) for sixty days. At the end of the experimental period, the fish groups fed on and KDF exhibited significant improvements in their feed intake, live weight gain, specific growth rate, feed conversion ratio and protein efficiency ratio, with concomitant improvement of their apparent protein digestibility (p | Eubiotic effect of a dietary acidifier (potassium diformate) on the health status of cultured Oreochromis niloticus
