EFFECT OF UNCONVENTIONAL DIETS ON GROWTH AND SURVIVAL OF CLARIAS BATRACHUS (LINN.)
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Authors
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C. B. TIWARY
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KAMALAKANT THAKUR
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S. K. TIWARY
Abstract
Enriched nutrient supply in aquaculture enables better growth and survival of fishes (Dutta Munshi et al., 1990). The nutrients could be supplied through natural form (Adigun, 2005), or supplementary diet for successful aquaculture. Organic manures are traditionally applied in fish ponds to release inorganic nutrients, which stimulate the growth of plankton, yet leads to depletion of dissolved oxygen, high oxygen demand and high ammonia levels, resulting in stress in cultured fish (Tiwary, 2009). Introduction of live zooplankton has been investigated as a practicable alternative to pond fertilization while avoiding water quality deterioration (Jha et al., 2007). The plankton in the food can reduce the cost associated with artificial diet. Survival and increased availability of fries and fingerlings were better supported in combination with plankton, than the result with artificial diet alone in the hatchery (Ovie, 1996). High cost of fish feed has been a major problem to fish farmers in India. There is need to identify, explore and utilize cheaper natural feeds, which are easily available. The present study was aimed to utilise natural feed with artificial ingredients for the growth and survival of Clarias batrachus.References
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