Typology of organic residues attracting flies and their utilization in the agricultural sector in southern Benin

Abstract

The use of fly larvae as protein source for poultry and agent of biodegradation of organic substrates such as manure proves to be a promising and innovative technology for resource poor farmers. The study aimed at categorizing the organic substrates regarding their capacity to attract flies and to produce fly larvae, and at discussing their utilization in the agricultural domain in southern Benin. A total of 390 farmers were surveyed from October to November 2015 in the six departments (Atlantique, Ouémé, Plateau, Mono, Couffo and Zou) of southern Benin using an open-ended questionnaire. Most of the farmers had limited knowledge on the use of fly larvae to feed poultry. Some of them were not aware of the role of fly larvae in the degradation of the organic substrates. Three utilizations of these organic substrates were mentioned by the farmers: organic fertilizer, fly larvae production, and food for poultry. Animals' intestines, carcasses, poultry manure, pig manure were mentioned as animal residues attracting flies and potentially suitable for fly larvae production. Suitable plant residues for fly larvae production included agro-artisanal by-products such as soybean bran, corn bran and sorghum bran; brewery malt, rotten papaya fruits, mango rind and rotten banana fruits. The study suggests that these different types of substrate should be assessed for their suitability in fly larvae production and that the quality of residues obtained from the degradation by the fly larvae should be evaluated in the perspective of soil fertility replenishment.

Black soldier flies (<i>Hermetia illucens</i> Linnaeus) as recyclers of organic waste and possible livestock feed

“…Not only do we jeopardise our health and that of the environment when we don't take good care of our waste, we also lose on the economic benefit thereof. Food and other organic wastes are a valuable resource that we shouldn't waste as it contains a lot of nutrients and energy value that could be beneficial to both humans and the environment if reintegrated into the value chain (Bloukounon-Goubalan et al, 2017).…”

Techniques de production d’asticots de mouches domestiques (Musca domestica L. 1758) pour l’alimentation des volailles, synthèse bibliographique.

“…Il a été démontré que les asticots de M. domestica (1,5 gr d'oeufs pour 1kg de substrat) pouvaient réduire de 43 % le substrat de développement composé à 70% de déchets organiques (52). Le résidu d'élevage peut ensuite être utilisé comme un bio fertilisant de qualité pour améliorer la qualité des sols, augmenter le rendement des cultures et réduire l'utilisation d'engrais chimiques (16,20,21,22,69,71). Les teneurs en oligoéléments des résidus produits à partir des différents substrats de production d'asticots ont été comparés (15).…”

Effect of locally generated food waste on bioconversion and nutrient parameters of black soldier fly larvae, Hermetia illucens L.

“…Now it's time to use each and every part of our food, produced by our hard work in limited natural resources. Food and other organic wastes are a valuable resource that everyone should not waste as it contains a lot of nutrients and energy value that could be beneficial to both humans and the environment if reintegrated into the value chain (Bloukounon et al, 2017) [4] . Black soldier fly (BSF) organic waste management technology is the key to reduce the organic waste generated by us which will be consumed by these insects, so the nutrients present in the ~ 109 ~ wastes will get converted into insect biomass.…”