Duckweed (Lemna paucicostata Heglem ex Engle) in the diet of tilapia (Sarotherodon galilaeus)

Okoye, F.C. and Mbagwu, I.G. (1985) Duckweed (Lemna paucicostata Heglem ex Engle) in the diet of tilapia (Sarotherodon galilaeus). In: 4th Annual Conference of the Fisheries Society of Nigeria (FISON) , 26-29 November, 1985 , Port-Harcourt, Nigeria.

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Abstract

The growth of Sarotherodon galilaeus fingerlings fed with test diet of 33% crude protein and containing 10% duckweed was compared with standard KLRI/40/6 feed of 40% crude protein. From an initial mean weight of 1.18gm and 1.17gm, the fingerlings in the test diet and control respectively grew to a final mean weight of 2.17gm and 1.98gm after seven weeks. With mean growth rate of 2.02% and 1.65% of their body weight per day respectively for the test diet and the control, it was obvious that the test diet was better and had a higher food conversion than the control. The duckweed must have therefore, supplied some essential amino acids to the test diet thereby making it a higher quality feed

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