[en] The earthworm Eudrilus eugeniae is a well-known source of protein in animal feeding but there is lack of information on its fatty acid profile. This study aimed to determine its nutrient components and fatty acid profile. Earthworms were bred in substrate containing organic matter; peanut powder was added in the experimental group diet. The nutrient components (protein, ash, and minerals) of the adult worms were determined according to the Kjeldahl method and by atomic absorption spectrophotometer. The fatty acid profile was determined by gas chromatography / mass spectrometry. The dry-matter protein content significantly increased in worms fed peanut powder (p < 0.05) as did the minerals measured. The main fatty acid families had similar proportions in the groups. In the saturated fatty acids, C12:0 and C18:0 were present in higher proportions in both groups, whereas in monounsaturated fatty acids, C18:1ω9 prevailed. Significant differences (p < 0.05) in polyunsaturated fatty acids were observed between the two groups. An increase in the proportion of ω6 and ω3 was observed in the experimental group compared to the control. This study showed that peanut powder significantly influenced nutrient components of E. eugeniae. The fatty acid profile of this species was similar to that of most animals. Earthworms’ diet can be altered to improve the nutritional value of E. eugeniae.
Research center :
FARAH - Fundamental and Applied Research for Animals and Health - ULiège
Douny, Caroline ; Université de Liège - ULiège > Département de sciences des denrées alimentaires (DDA) > Département de sciences des denrées alimentaires (DDA)
Moula, Nassim ; Université de Liège - ULiège > Dpt. de gestion vétérinaire des Ressources Animales (DRA) > Dpt. de gestion vétérinaire des Ressources Animales (DRA)
Scippo, Marie-Louise ; Université de Liège - ULiège > Département de sciences des denrées alimentaires (DDA) > Analyse des denrées alimentaires
Hornick, Jean-Luc ; Université de Liège - ULiège > Dpt. de gestion vétérinaire des Ressources Animales (DRA) > Nutrition animale en milieu tropical
Language :
English
Title :
Influence of the diet on the composition of the earthworm Eudrilus eugeniae
Alternative titles :
[fr] Effet du régime alimentaire sur la composition du ver de terre Eudrilus eugeniae
Publication date :
31 March 2021
Journal title :
Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux
ISSN :
0035-1865
eISSN :
1951-6711
Publisher :
Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Paris, France
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