Growth of red tilapia (Oreochromis sp.) and lettuce (Lactuca sativa) in aquaponics system using two plant growing systems [manuscript]
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Date
2018
Authors
April A. Doring
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Abstract
Aquaponics is the combined culture of fish and hydroponic plants inrecirculating systems. Two experiments were conducted with the objective of evaluating the growth and yield of red tilapia and lettucein aquaponics system. The experiments were carried out using 500 liters capacity fishtank with 400 liter of water volume. Fish starter feeds were given to fish three times daily from 1-45 days. Result showed higher length gain and weight hain in treatment compared to treatment compared to treatment II with values 2.56 (±0.12) cm, 12.67 (±0.33) g, 2.08 (±0.05) cm and 9.49 (±.47) g, respectively. In the present study, survival rate was observed to be higher in treatment II compared to treatment I with values, 96.67 (±3.33) and 85.83 (±7.95), respectively. Statistically, significant difference was observed in both treatments in terms of length gain and weight gain, while there is no significant difference in terms of survival rate. Growth performance of lettuce was also evaluated in the two growing systems. It was found out that treatment has higher length and weight gain compared to treatment I with values 14.63 (±2.78) cm, 0.82 )±.87), 7.44 (±.75) cm and .35 (±.06) g. respectively. However, statistical analysis showed that there is no significant difference was observed in both treatments in terms of length gain and weight gain of lettuce. The study suggested that both treatments are suitable growing systems with the improvement for better production.