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Abstract

Four laboratory experiments were conducted in Laboratory of Live Food- Aquaculture Unit- Agriculture College during 2015-2017. First experiment investigate the response of grass carp (Ctenopharyngodon idella) to pellet diet in comparison to aquatic plants. Second experiment conducted to investigate three protein levels (18, 20 and 22 %) of pelleted food. Third experiment conducted to investigate three protein levels (24, 27 and 30 %) of pelleted food, and fourth experiment to investigate three feeding ratio (2, 4 and 6 % of fish weight) of pelleted food. Results of first experiment appeared an obvious negative growth in fish fed on plant only and also positive growth in fish fed on pellets and also plant and pellets. Weight increments were (-10.78, 5.08 and 8.14) gm, SGR were (-0.39, 0.17 and 0.28) %/day, while DGR were (-0.22, 0.10 and 0.17) g/day for fish fed on plants, plants & pellets and pellets respectively. Weight increments for 95 days were (1.91, 2.82 and 2.86) g for fish fed on pelleted food of (18, 20 and 22)% protein levels respectively. SGR were (0.25, 0.27 and 0.31) %/day, while

Keywords

Grass carp Growth Food conversion rate Pellets

Article Details

How to Cite
Taher, M. M. . (2018). Laboratory experiments on cultivation of grass carp Ctenopharyngodon idella (Valenciennes, 1844). Basrah J. Agric. Sci., 30(2), 91–98. https://doi.org/10.37077/25200860.2017.57

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