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Proximate composition and in vitro protein digestibility of extruded aquafeeds containing Acheta domesticus and Hermetia illucens fractions

dc.contributor.authorIrungu, F.G.
dc.contributor.authorMutungi, C.M.
dc.contributor.authorFaraj, A.K.
dc.contributor.authorAffognon, H.
dc.contributor.authorEkesi, S.
dc.contributor.authorNakimbugwe, D.
dc.contributor.authorFiaboe, K.K.M.
dc.date.accessioned2022-08-04T09:33:06Z
dc.date.available2022-08-04T09:33:06Z
dc.date.issued2018-11-08
dc.identifier.citationIrungu, F.G., Mutungi, C.M., Faraj, A.K., Affognon, H., Ekesi, S., Nakimbugwe, D. & Fiaboe, K.K.M. (2018). Proximate composition and in vitro protein digestibility of extruded aquafeeds containing Acheta domesticus and Hermetia illucens fractions. Journal of Insects as Food and Feed, 4(4), 275-284.
dc.identifier.issn2352-4588
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7604
dc.description.abstractMajor protein sources for feed manufacture have become costly, and this has led to increased cost of products such as aquafeeds. This has dampening effect on fish production especially in developing countries, and has necessitated a search for alternative protein sources in processed feeds. The effects of extrusion on aquafeed blends containing fractions of adult cricket (Acheta domesticus) meal (ACM) or black soldier fly (Hermetia illucens) pre-pupae meal (BSFM) on proximate composition and in vitro protein digestibility were investigated. Extrusion resulted in higher contents of protein and nitrogen free extract, and lower contents of ether extract and crude fibre as compared to the non-extruded feed. These observations were mainly associated with denaturation of proteins leading to increase in solubility, solubilisation of fibre due to the shearing forces at high temperature resulting in higher nitrogen free extract, and formation of starch-lipid complexes leading to lower ether extract. Our findings indicate that ACM or BSFM can be used to substitute fresh water shrimp meal up to 75 g/100 g level and still achieve highly nutritious processed fish feed.
dc.description.sponsorshipInternational Development Research Centre
dc.description.sponsorshipAustralian Centre for International Agricultural Research
dc.format.extent275-284
dc.language.isoen
dc.subjectAquaculture
dc.subjectFeeds
dc.subjectProcessing
dc.subjectInsects as Food
dc.subjectExtrusion
dc.subjectNutritive Value
dc.subjectProteins
dc.subjectHermetia illucens
dc.subjectAcheta domesticus
dc.titleProximate composition and in vitro protein digestibility of extruded aquafeeds containing Acheta domesticus and Hermetia illucens fractions
dc.typeJournal Article
cg.contributor.affiliationEgerton University
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationInternational Crop Research Institute for the Semi-Arid Tropics
cg.contributor.affiliationMakerere University
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryKenya
cg.coverage.hubEastern Africa Hub
cg.identifier.bibtexciteidIRUNGI:2018a
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectLivelihoods
cg.iitasubjectNutrition
cg.iitasubjectValue Chains
cg.journalJournal of Insects as Food and Feed
cg.notesPublished online: 08 Nov 2018
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCopyrighted; all rights reserved
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3920/JIFF2017.0089
cg.futureupdate.requiredNo
cg.identifier.issue4
cg.identifier.volume4


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