The fat coating machine has been evaluated in several studies evaluating its impact on production. The question remained as to what speed the various components of the fat coater should be operated at to optimize performance. Therefore the influence of coating speed (10, 13, 16 rpm) at different time (5, 10, 15, 20, 25, 30, 35, 40 minutes), on extruded fish size (3, 4, 6, 8 mm) was studied using fat coating machine. This article presents the results of an optimisation study conducted on a fat

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... ating machine showing that an increase in pellet size resulted in a decrease in oil absorption and an increase in coating time and speed resulted in an increase in oil absorption. Extrudates size and coating time were the two factors that significantly affected the oil absorption rate of the extruded feed. The optimum point of oil absorption was achieved after 33 minutes using a 3 mm extrudates size, resulting in a machine efficiency of 99.8%. The coated extrudates were checked for physical parameters. The equipment performance was carried out to demonstrate the efficiency of the equipment and ended with satisfactory results.