Aquaculture is a fast-growing sector of agriculture with tremendous growth of more than 30 percent worldwide during the last t

A 84 day experiment was conducted to evaluate the effect of sodium diformate NDF ® as commercial feed additives on growth performance and feed utilization of hybrid tilapia (♀ O. niloticus X ♂ O. aureus) fingerlings. Four treatments were applied; three levels of NDF ® (1 g kg -1 , 3 g kg -1 and 5 g kg -1 ) in addition to the control. The experimental diets containing (320 g kg -1 crude protein and 19.3 MJ GE) were applied into 24 fiberglass tanks, six replicate, stocked randomly with 25 hybrid tilapia fingerlings initial BW (15 ± 0.5 g) each. The efficiency of diformate supplementation was evaluated by parameters of growth response, crude protein (using body composition data). Generally, significant difference (P<0.05) were detected in growth performance with groups of fish fed on diets supplemented by NDF ® compared to the control group. The diet supplemented by 3 g kg -1 NDF ® had a mean final body weight 95.5g while control diet was 87.9 g. In terms of feed utilization, supplementation of 3 g kg -1 NDF ® showed a statistical significant (P<0.05) improvement in terms of FCR (1.28), PER (2.71) and PRE (40.3) compared with other groups of fish at various supplementation levels of organic acids salts and better than control. Apparent protein and lipid digestibility among fish groups fed the experimental diets supplemented by NDF ® improved significantly (P<0.05) compared to the control group. From these results it can be concluded that the dietary organic acids have the potential beneficial effects on growth and feed utilization in tilapia feeding.