Growth performance of bighead carp Aristichthys nobilis (Richardson) in monoculture system with and without supplementary feeding
2008
Afzal, M. (National Agricultural Research Centre, Islamabad (Pakistan). Aquaculture and Fisheries Program) | Rab, A. (National Agricultural Research Centre, Islamabad (Pakistan). Aquaculture and Fisheries Program) | Akhtar, N. | Ahmed, I. (University of Agriculture, Faisalabad (Pakistan). Dept. of Zoology and Fisheries) | Khan, M.F. (University of Agriculture, Faisalabad (Pakistan). Dept. of Zoology and Fisheries) | Qayyum, M. (Pir Mehr Ali Shah Arid Agriculture Univ., Rawalpindi (Pakistan). Dept. of Zoology)
Growth performance of bighead carp (Aristichthys nobilis) in monoculture system with and without supplementary feeding indicated that supplementary feeding played an important role in better growth of bighead carp. The average initial weight of bighead carp at the time of stocking was 11.40 plus minus 3.258 and final weight of 902.00 plus minus 4.63g was recorded after 12 months of experiment using organic (cow dung) and inorganic (urea and single super phosphate) fertilizers. The average initial weight at the time of stocking of bighead carp was 10.3 plus minus 1.32g and average final weight was 1170 plus minus 4.85g at the end of experiment using fertilizers and supplementary feed with 20% crude protein. Significantly higher (P less than 0.05) weight gain of 1170.0 plus minus 3.258 was achieved in treatment with supplementary feeding compared to 902.00 plus minus 4.63g without supplementary feeding. Temperature range of 26-33 degree C (during May to July) was found to be suitable for fish growth, as better weight gain and lower feed conversion ratio were recorded during this period. Lower growth was observed during the months of December, January and February, when average temperature was 7-15 degree C.
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