Abstract
The conventional methods of supplying feed to tilapia tanks are ineffective. It is better to find new a automatic feeder saving pellets from crushing and cohesion without hitting pellets during feeding at a predetermined interval of time and an accurate amount of food with a larger surface area covered by pellets. Developing-country fish farmers use manual feeding to be more cost-effective than with costly mechanized feeding, so this research aimed to design and construct an automatic fish feeder prototype to feed tilapia in a recirculation aquaculture system’s tank. The performance of the prototype was studied after it was designed and installed. The dispensed feed operated by a DC motor located underneath the pellet hopper and the feed material was discharged into the tank through a gate in the bottom of the feeder. Three pellet sizes, three rotation speeds, and three feeder heights from the water’s surface were used to test the automatic feeder’s efficiency. The results showed that the optimal speed for the automatic feeder was 14 rpm with a height of 70 cm, resulting in a distribution width of 26.6 cm and a high automatic feeder efficiency of 99.9%. Furthermore, the feeder used very little electricity and saved time, cost, labor, energy, and pellets.
Highlights
The cost of raw material, as well as the equipment used in the production and processing of the feed, contribute to the high cost of aquaculture feed
There was no difference in the viscerosomatic index, indicating that the ultimate carcass quality had not changed. These findings show that in the last phases of cage-raising Nile tilapia, a higher feeding rate combined with efficient feed management can be used without sacrificing end fish productive quality [25]
The automatic fish feeder was installed in a private workshop in Mansoura, Daqahlia province, and tests were conducted in El Salhiya, El Sharkia province, Egypt
Summary
Feeding frequency is dependent on labor availability, farm size, as well as fish species and sizes. Growth and feed conversion increase with feeding frequency. In intensive fish culture systems, fish may be fed as many as five times a day to maximize growth at optimum temperatures [1]. Since fish farmers must ensure that feeding regimes, feeding rates, ration sizes, and the period over which they are dispensed are adjusted to optimize consumption, growth, and conversion efficiencies, the expression of feeding behavior and the satiation time are both important. The cost of raw material, as well as the equipment used in the production and processing of the feed, contribute to the high cost of aquaculture feed. The cost of aquaculture feeds can account for from 30 to
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