Oxygenation effect of wave aerator on shrimp culture

Dissolved oxygen is necessary for growth and metabolism of shrimps. In order to find a more efficient aeration way for intensive shrimp farming, the effects of different aeration methods using one 0.75 kW wave aerator and one 0.75 kW paddlewheel aerator under different weather conditions were compared. The experiment was conducted in a concrete pond with film bottom, with Litopenaeus vannamei culture density of 10 000 kg/hm2. The results showed that under fine weather conditions, the aeration effect of wave aerator was better than paddlewheel aerator, which could make the dissolved oxygen concentration in the culture pond higher to 1.24 mg/L. However, in the rainy days or at night, the difference was not very obvious. Therefore, for commercial intensive shrimp farming, it is suggested to use wave aerator combined with other aeration method to ensure the dissolved oxygen demand.