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Partial replacement of fish meal by earthworm meal (Libyodrilus violaceus) in diets for African catfish, Clarias gariepinus

Dedeke, G. A. and Owa, S. O. and Olurin, Kayode B. and Akinfe, A. O. and Awotedu, O. O. (2013) Partial replacement of fish meal by earthworm meal (Libyodrilus violaceus) in diets for African catfish, Clarias gariepinus. International Journal of Fisheries and Aquaculture, 5 (9). pp. 229-233. ISSN 1991-637X

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Abstract

A seven-week feeding trial was conducted to examine the possibility of replacing fish meal with earthworm meal in the diets of the African catfish, Clarias gariepinus fry. Fish meal protein was replaced by earthworm meal at 0% (D0); 15% (D15); 25% (D25); 35% (D35); and 50% (D50). The diets were isonitrogenous (54%) and fed thrice daily to triplicate groups of African catfish fry at 5% body weight. Diet had a significant effect on growth performance and feed utilization (p≤0.05). Final weight, weight gain, daily weight gain, and specific growth rate, were highest in fish fed diet D25. A similar pattern of growth was observed for length measurements. Fish fed diets exceeding 25% replacement of fish meal with earthworm meal had depressed growth. Feed conversion ratio was highest in fish fed D35. Mortality was not dependent on diet. It is concluded that fish meal can be substituted with earthworm meal up to 25% in the diet of C. gariepinus fry without adverse effects on growth and nutrient utilization

Item Type: Article
Uncontrolled Keywords: Earthworm meal, fish nutrition, African catfish (Clarias gariepinus), Libyodrilus violaceous.
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 22 Feb 2017 13:29
Last Modified: 22 Feb 2017 13:29
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/7828

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