The second experiment was an on-farm evaluation to test the efficacy of Excential Energy Plus in ponds. Over a period of 92 days, Nile tilapia were fed either a commercial control diet or the same control diet with Excential Energy Plus at 350 g/MT on top. The trial was done on a farm, in regular ponds to come as close as possible to a normal production situation. During and after the feeding trial, the survival, growth performance and feed efficiency were measured and calculated. Survival, fish health and feed intake were unaffected by the addition of the nutritional emulsifier. However, when looking at growth after 92 days, it was observed that fish fed the nutritional emulsifier had a significantly higher growth (499.7 g) compared to fish not fed the emulsifier (435.5 g) (p<0.05; Figure 3). Additionally, the FCR showed a trend towards significance (p<0.1), as the FCR improved when fish were fed the nutritional emulsifier .
(1.44) compared to fish fed the same diet without the nutritional emulsifier (1.70).
With the rising feed prices and the demand for increased efficiency, the use of nutritional emulsifiers is a suitable strategy. Excential Energy Plus, an emulsifier with a high, optimal HLB value for the intestinal environment, is already widely used in livestock and aquaculture and known to improve growth performance and feed efficiency. Especially the positive effect on fat, protein and energy digestibility is a very powerful tool in the optimization of nutrients. Next to that, the use of Excential Energy Plus is linked to an increased health status, enzyme activity and fillet yield in Nile tilapia.