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Evaluation of the Fatty Acid Composition of Earthworm Eisenia andrei Meal as an Alternative Lipid Source for Fish Feed

Fernando Isea-León1, 2,, Vanessa Acosta-Balbás1, Leandra Beatriz Rial-Betancoutd2, Ana Luisa Medina-Gallardo2, Ble Mélécony Célestin3

1Universidad Técnica de Manabí. Escuela de Acuicultura y Pesquería. Facultad de Ciencias Veterinarias. Grupo de Sanidad e Inocuidad y Ambiente; y Grupo de Biodiversidad y Ecología de Sistemas Acuáticos. Bahía de Caráquez EC131450, Ecuador

2Universidad de Los Andes. Departamento de Ciencias de Alimentos. Laboratorio de Ciencias de Alimentos. Facultad de Farmacia y Bioanálisis. Grupo de Ecología y Nutrición. 5101 Mérida. Venezuela

3Centre de Recherches Océanologiques - CRO·Department of Aquaculture Abidjan. Code. 00225. Abidjan, Ivory Coast

Journal of Food and Nutrition Research. 2019, 7(10), 696-700. DOI: 10.12691/jfnr-7-10-2
Received August 13, 2019; Revised September 25, 2019; Accepted October 06, 2019

Abstract

This study propose to evaluate the fatty acid composition of the earthworm Eisenia andrei as an alternative lipid source for fish feed. Methods: The analytical composition of moisture, protein, lipids, ash and non-nitrogenous extract of earthworm meal Eisenia andrei and fishmeal was initially determined. Subsequently, the fatty acid contents of the lipids of these two ingredients were determined by gas chromatography. Results: Significant differences were found in the content of group ω-6 Polyunsaturated Fatty Acids (PUFA), with higher value (19.85 %) in the earthworm flour vs. 13,29% in fish meal, specifically the group of C14 PUFA, C16:2 n-4; C18: 2 n-6; C18: 3 n-6; C20:2 n-6; C20:3 n-6 and n-6 C20:4. The content of ω-3 fatty acids, mainly C20:5 n-3 and n-3 C22:6 is also important in the earthworn flour. Conclusions: the flour of E. Andrei could be recommended as a source of protein and lipid in fish feed because of its high protein and PUFA content.

Keywords:

earthworm, biochemical composition, fish feed, PUFA, nutritional value
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