Physical and mechanical properties of commercial fish feed with addition of fish scales and starch

One way to reduce the price of fish feed while maintaining quality is to utilize existing organic waste such as fish scales or weed plants such as water hyacinth and taro. This study aims to determine the physical and mechanical characteristics of extruded feed with waste material added with a reinforcement, namely starch. The materials used were mixed using three different combinations to see the effect of fish scales on the mechanical and physical properties of the feed. The addition of torpedo fish scales to the feed can increase the mineral content of the feed and reduce the water content of the fish feed produced to produce feed that is more durable and not easily mouldy. On the other hand, the floating Time and resistance of the fish feed produced decreased with torpedo fish scales. The addition of torpedo fish scale composition should be limited to a value of 41.25% of the total feed to produce a density of about 0.99 g/cm3. The average value of compressive strength at maximum loading of fish feed decreased with increasing feed protein ratio.