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- W1592869815 abstract "Two experiments were carried out to study the effect of different feeding levels and feeding frequencies in the culture of Clarias lazera (C. & V.) fingerlings from 0.5 to 10 g. It was found that 0.5 g fingerlings could reach an average weight of about 10 g in 3–4 weeks when they were fed continuously for 24 h per day or 12 h at night at a daily rate of 8% of the biomass or more. A feeding level of 10% of the biomass appeared to be optimal, from the point of hygiene, growth rate and feed utilization parameters. Continuous feeding during part or all of the day clearly gave better growth than feeding two or four defined meals per day. When these preferred feeding regimes were practised, the feed conversion (wet weight) ranged from 0.65 to 0.97, the protein efficiency ratio from 2.14 to 3.04 and the productive protein value from 0.34 to 0.47. These values compare favourable with values reported for other cultured species, indicating that C. lazera fingerlings are efficient feed convertors. It could be calculated that, when the rations are readjusted only once a week, the high growth rates occurring in these experiments result in a considerable difference between the designated feeding rates and the actual feeding rates." @default.
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- W1592869815 date "1981-01-01" @default.
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- W1592869815 title "Controlled propagation of the African catfish, Clarias lazera (C. & V.)" @default.
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- W1592869815 doi "https://doi.org/10.1016/0044-8486(81)90049-1" @default.
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