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H. G. Ketola and B. F. Harland, “Influence of Phosphorus in Rainbow Trout Diets on Phosphorus Discharges in Effluent Water,” Transactions of the American Fisheries Society, Vol. 122, No. 6, 1993, pp. 1120-1126. doi:10.1577/1548-8659(1993)122<1120:IOPIRT>2.3.CO;2

has been cited by the following article:

• TITLE: Evaluation of Nitrogen and Phosphorus Wastes Produced by Nile Tilapia (Oreochromis niloticus L.) Fed Azolla-Diets in Earthen Ponds

  AUTHORS: Youssouf Abou, Aliou Saidou, Daouda Mama, Emile D. Fiogbé, Jean-Claude Micha

  KEYWORDS: Azolla; Aquaculture; Environment; Fish Meal Replacement; Oreochromis niloticus; Nitrogen; Phosphorus; Nutrient Balance

  JOURNAL NAME: Journal of Environmental Protection, Vol.3 No.6, June 21, 2012

  ABSTRACT: Nitrogen (N) and phosphorus (P) wastes produced by Nile tilapia Oreochromis niloticus L. fed Azolla, an aquatic atmospheric nitrogen fixing fern, was evaluated for 90 days in pond experiment. Six isonitrogenous (29.2% crude protein) and isoenergetic (16.9 Kj·g–1) diets A0, A10, A20, A30, A40 and A50, containing 0%, 10%, 20%, 30%, 40% and 50% of Azolla meal (AM) respectively, as partial fishmeal (FM) substitutes, was provided to experimental fish. The Azolla-free diet A0 served as a control. Fish specific growth rate (SGR) was higher with the control diet, the lower values being obtained in A50-fed fish (P Azolla could be used in diet to sustain Nile tilapia growth and as “environmentally-friendly” ingredient to limit P loss, while providing N to the field, beneficially in tropical marshland pond where this nutrient is already limiting.