ISSN 2167-0447
International Journal of Agricultural Sciences ISSN 2167-0447 Vol. 6 (2), pp. 927-930, February, 2016. © International Scholars Journals
Full Length Research Paper
Technical assessment of catfish effluents management in Lagos State, Nigeria
Omofunmi O.E.,1 J. .K2. Adewumi., A.F2. Adisa., and S.O3 Alegbeleye
1Department of Agricultural and Bio-Environmental Engineering, YABATECH, Lagos, Nigeria
2Department of Agricultural Engineering, Federal University of Agriculture Abeokuta, Nigeria.
3Department of Fisheries and Aquaculture, Federal University of Agriculture, Abeokuta, Nigeria.
Corresponding author. E-mail: address:[email protected]. 08033046416; 08076510369.
Accepted 03 January, 2016
Abstract
Catfish is one of the major source of dietary protein in Nigeria. Lagos State in particular is one of culturing area with abundant fresh water and marine environments. The aim of the study was to evaluate the catfish rearing industry and its effluents management and make appropriate recommendations. Forty fish farms were randomly selected in Lagos State. Questionnaire and in-depth interview were used for data collection on water sources, equipment operations, and waste management. Data were analyzed using descriptive statistics. Results indicated that over 80% of water for fish rearing was from shallow well and 95% of the waste water generated was not treated before disposal into environment (land, river, streams). Effluents disposals employed were open pit, 12.5%; drainage canal, 32.5%; bared-land, 10.0%; stream, 22.5% and re-used on farm, 12.5%. Only few farmers carried out simple treatment before disposal namely; infiltration, 2.5% and sedimentation, 2.5%. If the effluent management conditions were not improved, it could pose treat to environment in the studied areas. Pond effluent must be treated before disposed into environment and waste water from fish pond effluent should be reused as soil amendment (solid) as irrigation water and impoundment for newly established pond with little treatments.
Key words: Assessment, catfish, data collection, effluents, Lagos State, management.