The study aimed to determine the optimal feeding regime for tilapia reared at high stocking densities (4.50 kg/m³) under varying temperature conditions. Tilapia were divided into groups subjected to high (29.88 ± 0.38°C) and low (21.78 ± 0.38°C) temperatures, with three feeding frequencies (2%, 3%, and 4%) within each temperature group, over 60 days. All the groups were in three replicates. Results indicated better growth at higher temperatures, with a 4% feeding frequency leading to the best growth rate and weight gain across both temperature conditions. Higher temperatures facilitated better feed utilization due to increased metabolism. The feed conversion ratio (FCR) was optimal at a 2% feed frequency for both temperature conditions, with high temperatures showing better FCR results. Variations in feeding frequency did not affect the chemical composition or digestive enzyme activity of the fish. The study concluded that temperature fluctuations within the tolerance range did not adversely affect weight gain or nutritional quality. Similar growth patterns were observed across different feed frequencies, suggesting that a 2% feeding frequency is effective for various culture systems without compromising growth rates.

Keywords:

Growth efficiency; metabolism; feed conversion ratio; feeding regime