Effect of covering water surface with azolla (Azolla filiculoides Lam.) on water

Although common in Africau2019s rural areas, covering fish pond with Azolla is an extensive aquaculture practice that generates lower fish growth performances. To improve fish yield, a 90-days experiment was implemented to evaluate the effects of several Azolla cover (AC) levels on water nutrient, plankton dynamic, growth and production of Nile tilapia supplementary fed in ponds. Six triplicate groups of ponds were covered with one of the following AC extensions: 0%, 15%, 30%, 45%, 60% and 75% of the surface. Fingerlings were fed with a practical diet containing 20% of Azolla meal (AM).

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Effect of covering water surface with azolla (Azolla filiculoides Lam.) on water

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