Apparent digestibility coefficients of brewer's by-products used in feeds for rainbow trout (Oncorhynchus mykiss) and gilthead seabream (Sparus aurata)
Visualitza/Obre
Autor/a
Nazzaro, J.
San Martin, D.
Perez-Vendrell, A.M.
Padrell, L.
Iñarra, B.
Orive, M.
Estévez, A.
Data de publicació
2020-08-06ISSN
0044-8486
Resum
A trial was conducted to test the effect of partial replacement of fishmeal by two brewery industry byproducts, yeast and spent grain, included in isoproteic (41% CP) and isolipidic (22% CL) diets for gilthead sea bream (Sparus aurata) and rainbow trout (Oncorhyncus mykiss), having in mind the availability of these byproducts. A first step before an ingredient is included in a commercial feed is to evaluate the nutritional quality of these raw materials by measuring their digestibility. Thus, the apparent digestibility coefficients of the diets and ingredients were determined after a 30 days feeding trial and faecal collection. Apparent digestibility coefficients of these by products in the case of rainbow trout varied between 75 and 88% whereas for gilthead seabream was between 71 and 88%. According to the results obtained, the inclusion of 20–30% of brewers' spent yeast and spent grain in the feed for carnivorous fish either from fresh (rainbow trout) or marine (gilthead seabream) gave similar results to a feed with fish meal as the main protein source and show a good protein, lipid and amino acid digestibility. Taking into account that these by-products are produced in large quantities in Europe, they can be a potential source of protein to reduce the use of plant proteins or fish/animal byproducts (trimmings) and increase the sustainability of both sectors, brewery industry and aquaculture.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
639 - Caça. Pesca. Piscicultura
Pàgines
26
Publicat per
Elsevier
Publicat a
Aquaculture
Citació
Nazzaro, J., D. San Martin, A.M. Perez-Vendrell, L. Padrell, B. Iñarra, M. Orive, and A. Estévez. 2021. "Apparent Digestibility Coefficients Of Brewer's By-Products Used In Feeds For Rainbow Trout (Oncorhynchus Mykiss) And Gilthead Seabream (Sparus Aurata)". Aquaculture 530: 735796. doi:10.1016/j.aquaculture.2020.735796.
Número de l'acord de la subvenció
EC/LIFE/LIFE16 ENV-ES-000160/EU/New strategies for improving the sustainability of breweries: full waste recovery for Aquaculture feed/LIFE-Brewery
Programa
Aqüicultura
Nutrició Animal
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