Nutritional and anti-nutritional analyses of Azolla africana Desv. and Spirodela polyrrhiza L. Schleiden as feedstuffs for fish production

Fasakin, E.A. and Balogun, A.M. (2001) Nutritional and anti-nutritional analyses of Azolla africana Desv. and Spirodela polyrrhiza L. Schleiden as feedstuffs for fish production. In: 14th Annual Conference of the Fisheries Society of Nigeria (FISON) , 19-23 January 1998 ,Ibadan, Nigeria, pp. 31-39.

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Abstract

The chemical composition of Azolla africana and Spirodela polyrrhiza cultivated in earthen ponds were determined. Crude protein contents of the samples were 28.9~c0.6 and 25.6~c0.2% dry matter for A. africana and S. polyrrhiza respectively. Dry matter, crude fibre and lipid contents of A. africana were higher (P<0.05) than values obtained for S. polyrrhiza. Mineral analyses showed that S. polyrrhiza contained higher levels of Na, S, Ca, Mg and Fe than A. africana. Except for Ca content in S. polyrrhiza, heavy metals (Ni and Zn) accumulation in Azolla were very high. There were no wide differences in the individual amino acid indexes except for methionine. Some anti-nutritional factors were determined. Cyanide, tannin and phytin contents of fresh weed samples were higher than sun-dried samples. A. africana contained more cyanide and tannin than S. polyrrhiza both in fresh and sun-dried forms

Item Type: Conference or Workshop Item
Title: Nutritional and anti-nutritional analyses of Azolla africana Desv. and Spirodela polyrrhiza L. Schleiden as feedstuffs for fish production
Personal Creator/Author:
CreatorsEmail
Fasakin, E.A.
Balogun, A.M.
Page Range: pp. 31-39
Date: 2001
Event Title: 14th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Ibadan, Nigeria
Event Dates: 19-23 January 1998
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; amino acids; aquatic plants; fish culture; food organisms; nutrients (mineral); nutritive value; plant culture; Azolla africana; Spirodela polyrrhiza
Subjects: Aquaculture
Chemistry
Item ID: 3654
Depositing User: Ms Maria Kalentsits
Date Deposited: 11 Jul 2010 09:56
Last Modified: 29 Sep 2011 17:03
URI: http://aquaticcommons.org/id/eprint/3654

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