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Universität für Bodenkultur Wien (2012)

Utilization of locally available feedstuffs for small-scale aquaculture production in Ethiopia

Desta, Kassahun Asaminew

Titre : Utilization of locally available feedstuffs for small-scale aquaculture production in Ethiopia

Auteur : Desta, Kassahun Asaminew

Université de soutenance : Universität für Bodenkultur Wien

Grade : Doctor rerum naturalium technicarum (Doctor of Natural and Technical Sciences) 2012

Résumé
The present study was conducted to identify sustainable alternative protein sources using locally available feedstuffs for aquaculture production in different agro-ecological zone of Ethiopia. Based on their availability, costs, contents of protein, nitrogen free extract, fibre and the feasibility of removal of antinutritional factors ; agriculture and agro-industrial by-products, fish carcause remain, fishery by-catch, Sorghum chafer, milling dust and formulated poultry feeds were identified as most promising potential non-conventional protein and/or energy sources feedstuffs. In an effort to contribute to the identification of locally available and cost effective feeds for cultured O. niloticus, feeding growth experiment was conducted to evaluate the effects of using Lathyrus pea hulls (LPH), wheat bran (WB) and brewer´s grains (BG) as single feed ingredients in fertilized ponds and brewer´s grains (BG), cotton seed cake (CSC), Tilapia carcass remains (TCR), wheat bran (WB) and Sorghum chafer (CH) as ingredients for formulated fish diets in cages. Results indicated that the tested feedstuffs have a high potential and could be utilized interchangeably based on their region of availability, thereby contributing to overcome one of the key factors currently hampering aquaculture development in Ethiopia. From this study it can be concluded that locally available non-convectional feedstuffs can sustainably be utilized in O.niloticus production. Further research is to be directed towards analysing the effects of the feedstuffs identified herein on production traits of O.niloticus grown to market size

Mots clés : Aquakultur / Äthiopien / Fischproduktion / Tilapia / Fischfutter — Nile tilapia / Oreochromis niloticus / aquacultur / Ethiopia / sustainable production

Présentation (österreichischen Bibliothekenverbundes)

Version intégrale

Page publiée le 19 décembre 2015, mise à jour le 13 mars 2019