Propiedades físicas de alimento para tilapia roja (Oreochromis spp.) elaborado con ensilado químico y secado en microondas

Abstract

The present research study assessed the drying kinetics of non-extruded pellet feed for red tilapia (Oreochromis spp.). The pellets were made with conventional inputs in the control diet by using convective drying and microwave drying. Pellets were made with a control diet and with a diet including viscera silage for which the most relevant physical parameters were determined. The selection criterion was floatability. The results showed that the best method was microwave drying, which delivered pellets with physical properties, floatability (63-96%) and expansion ratio (1.6-1.8), similar to that of extruded pellets. However, pellets made with a silage diet required the application of waterproofing strategies to improve their stability in water. It is concluded that microwave dried red tilapia feed has similar physical properties to feed made by conventional methods.