Growth performance of Oreochromis niloticus (Pisces: Cichlidae) in fertilized, tropical earthen ponds
Journal of Food, Agriculture and Environment
Department of Zoology and Environmental Biology, Faculty of Science, University of Calabar, Nigeria; Department of Fisheries and Aquatic Sciences, Faculty of Agriculture and Forestry, Cross River University of Technology, Calabar, Nigeria
The effect of cow dung, chicken manure and NPK on the production of Oreochromis niloticus was investigated in earthen ponds which were prepared thus: no liming, no fertilization (NL/NF), liming and fertilization with cow droppings (L/Cow), liming and fertilization with chicken droppings (L/Chick) and liming and fertilization with NPK (L/NPK). Best fish growth was recorded in the limed, NPK-fertilized (L/NPK) ponds while productivity values (Gross and Net) were highest in the limed, chicken droppings fertilized (L/Chick) ponds. Growth parameters decreased with age of fish while significant differences (P<0.05) were observed between treatments.
age; article; growth; manure; nonhuman; Oreochromis niloticus; pond; Cichlidae; Oreochromis niloticus; Pisces