protein source whiles the test diets contained the test ingredientsat 30% inclusions. All the basal ingredients used in the feed for-mulation were finely-ground and sieved to obtain a homogenousmixture and weighed out according to their respective formu-lations. Mineral and vitamin premixes were added to each diet.Pre-gelatinised tapioca flour was used as the binder and the dietspelletized with a meat grinder fitted with a 2 mm die plate. Theresulting pellets were oven-dried at 40◦C for 48 h.