, Volume 321, Issue 2, pp 101-107

First online:

First data on rabbit dung as a water fertilizer in tropical fish culture and its effect on the growth of Oreochromis niloticus (Teleostei, Cichlidae)

  • J. J. BreineAffiliated withK.U. Leuven, Lab. of Ecology and AquacultureInstitut de Recherches Zootechniques et Vétérinaires
  • , G. G. TeugelsAffiliated withK.U. Leuven, Lab. of Ecology and AquacultureMusée Royal de l'Afrique Centrale, Lab. d'Ichtyologie
  • , N. PodoorAffiliated withK.U. Leuven, Lab. of Morphology and Systematics of Plants
  • , F. OllevierAffiliated withK.U. Leuven, Lab. of Ecology and Aquaculture

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The influence of rabbit dung on water quality, plankton occurrence and Nile tilapia growth (Oreochromis niloticus) was studied. pH and total alkalinity increased, dissolved oxygen concentration decreased but not below the critical level whilst the nitrogen parameters were not affected in a significant way. An important increase of plankton was recorded and was reflected in a decrease of transparency: the phytoplankton density was 2.7 times that of the controls. Tilapia growth rate in the manure treatments was 5.1 times that of the control group; no significant difference in survival rates was observed.

Key words

rabbit dung water quality Nile tilapia growth fish culture Africa