Abstract
Commercial fish scale removers are very expensive. This study was conducted in order to fabricate and test the performance of a low cost, stand-alone semi-manually operated fish scale remover. The randomized complete block design (RCBD) quasi-experiment was used to test the capacity and efficiency of the semi-manually operated fish scale remover. Three (3) different kinds of fish in Northern Samar (Bangus, Sagision and Kirawan) with three (3) different sizes of scales (Large, Medium and Small) were used in the testing of the fabricated fish scale remover at three (3) different speeds of the scaling drum (High, Medium and Low). The results revealed that the higher the speed of the scaling drum, the higher is the scaling capacity of the manually-operated fish scale remover. Likewise, the bigger the scales of fish being descaled, the higher is the scaling capacity of the manually-operated fish scale remover. The average scaling capacity of the fish scale remover is higher than the average scaling capacity of an experienced fish vendors for kirawan and sagision but is lower than that of the experienced fish vendors for bangus. On the other hand, the average scaling efficiencies of the machine for all the fish used in testing the machine were highest at medium speed setting of the scaling drum. The cost and return analysis on the operation of the semi-manually operated fish scale remover revealed that it will have an annual net income of P 48,724.37, a payback period of 50 days, and a rate of return of 3.82. The actual cost of constructing the semi-manually operated fish scale remover is ₱ 12,756.00.
Highlights
The tool must be repeatedly moved over the same area of the fish in order to ensure that all scales are removed and so there is that tendency to destroy the skin of the fish
The researchers developed and constructed a semi-manually operated fish scale remover consisting of the following parts: 1) Machine Support Frame 2) Scaling Drum 3) Scaling Board / Platform 4) Scale Collecting Hopper 5) Motor
The component parts and the materials used in the fabrication of the above manually operated fish scale remover are the following: Table 3: The component parts and materials used in the fabrication of the manually operated fish scale remover
Summary
For this reason, man is determined to conduct more beneficial projects and upgrade devices/equipment for special purposes. In the Philippines, the common practice of removing fish scales is done by moving the dull side of a knife, spoon, fork, or wood with spike nails against the fish in a direction opposite to the extending scales (Dela Cruz, 1983). This procedure, is difficult, time consuming, and very messy since the removed scales is snapping off in a variety of directions. The tool must be repeatedly moved over the same area of the fish in order to ensure that all scales are removed and so there is that tendency to destroy the skin of the fish
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