Total nitrogen, carbon and phosphorus digestibility in gilthead seabream (Sparus aurata) and European seabass (Dicentrarchus labrax) fed with conventional and organic commercial feeds: implications for particulate waste production

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dc.contributor.author Ballester-Moltó, Mateo
dc.contributor.author Follana-Berná, Guillermo
dc.contributor.author Sanchez-Jerez, Pablo
dc.contributor.author Aguado-Giménez, Felipe
dc.date.accessioned 2019-11-13T11:42:01Z
dc.identifier.uri http://hdl.handle.net/11201/150299
dc.description.abstract [eng] Organic fish farming is postulated as a more environmentally friendly activity than conventional activities. However, environmental sustainability as regards waste output has not been addressed. In this respect, the most important environmental problems associated with fish farming are those related with the discharge of particulate wastes. In this study, total nitrogen, carbon and phosphorus digestibility was estimated in a wide size range of gilthead seabream (Sparus aurata) and European seabass (Dicentrarchus labrax) fed a commercially available conventional diet and an organic feed, as a previous step to assessing particulate waste output. Neither fish size nor feed nutrient content was seen to influence nutrient digestibility in either species. The organic diet provided higher carbon but lower nitrogen and phosphorus digestibility than conventional feed in both species. Simulations under real ongrowing conditions resulted in lower values for nitrogen and higher values for carbon particulate wastes when conventional feed was supplied to both species. Particulate phosphorus wastes were 2.6- to 3.4-fold higher for fish fed the organic diet. Restrictions concerning NO the raw materials used for organic diet formulation and differences in nutrient bioavailability between the diets seemed to be the underlying reason for the differences found.
dc.format application/pdf
dc.relation.isformatof https://doi.org/10.1111/are.13171
dc.relation.ispartof Aquaculture Research, 2016, vol. 48, num. 7, p. 1-14
dc.rights , 2016
dc.subject.classification Medi ambient
dc.subject.classification 57 - Biologia
dc.subject.other Environment
dc.subject.other 57 - Biological sciences in general
dc.title Total nitrogen, carbon and phosphorus digestibility in gilthead seabream (Sparus aurata) and European seabass (Dicentrarchus labrax) fed with conventional and organic commercial feeds: implications for particulate waste production
dc.type info:eu-repo/semantics/article
dc.date.updated 2019-11-13T11:42:02Z
dc.date.embargoEndDate info:eu-repo/date/embargoEnd/2026-12-31
dc.embargo 2026-12-31
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess
dc.identifier.doi https://doi.org/10.1111/are.13171


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