Performance of raw material thermal treatment on formulated feeds for common octopus (Octopus vulgaris) ongrowing

Rodríguez-González, Tania; Cerezo Valverde, Jesús; Sykes, António V.; García García, Benjamín

Publication

Performance of raw material thermal treatment on formulated feeds for common octopus (Octopus vulgaris) ongrowing

2015Journal article

dc.contributor.author	Rodríguez-González, Tania
dc.contributor.author	Cerezo Valverde, Jesús
dc.contributor.author	Sykes, António V.
dc.contributor.author	García García, Benjamín
dc.date.accessioned	2018-11-09T21:01:31Z
dc.date.available	2018-11-09T21:01:31Z
dc.date.issued	2015
dc.description.abstract	The common octopus (Octopus vulgaris) has aroused great interest in recent years as a new species for aquaculture. However, the inexistence of feeds with an adequate and balanced nutritional profile for all life stages has hampered O. vulgaris aquaculture development. In the present study, O. vulgaris juveniles were fed with one of two different diets, based on dried raw materials (22% gelatine, 10% egg yolk, 10% Boops boops, 5% Todarodes sagittatus, 5% Carcinus mediterraneus, 2% fish oil, 3% glucose, 3% starch and 40% water) and differing only on bogue (B. boops) thermal processing (either freeze-dried — FDb or bogue meal prepared with temperature below 60 °C — Mb). Growth, feed efficiency, digestibility and condition were assessed after 56 days of rearing. Data were used to determine growth, weight gain (Wg), absolute growth rate (AGR), specific growth rate (SGR), absolute feeding rate, absolute protein feeding rate (APFR), absolute lipid feeding rate (ALFR), specific feeding rate (SFR), feed efficiency (FE), feed conversion ratio (FCR), protein productive value (PPV), lipid productive value (LPV), digestive gland index (DGI) and apparent digestibility coefficients (ADC). Both diets were accepted, promoted growth and faeces production with 100% of survival. No significant differences were found in growth (SGR of 0.78 ± 0.19%BW·day−1 for FDb and 0.85 ± 0.09%BW·day−1 for Mb), feed efficiency (48.31 ± 9.70% and 39.22 ± 2.92% for FDb and Mb, respectively), PPV and LPV. Despite the similarity on FCR (P N 0.05), a higher ingestion was found on Mb group regarding AFR (P b 0.01), APFR and ALFR (P b 0.01) and SFR (P b 0.05). In addition, the Mb octopi showed the highest DGI (6.75 ± 1.00%). Faeces proximate composition differed between groups in protein (P b 0.05), lipid (P b 0.05) and mineral content (P b 0.01) which were reflected in higher ADC for dry matter, protein and lipids in the Mb group (P b 0.01). Nonetheless, the proximate composition of tissues was similar between both groups (P N 0.05). The results revealed that dehydration of raw materials, performed under 60 °C (bogue-meal), had no effect on ingestion, digestibility, growth and survival when compared with the use of freeze-drying, which points out to the possible suitability of this thermal treatment for O. vulgaris feeds.	pt_PT
dc.description.sponsorship	INIA-Project RTA2012-00072-00-00
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.doi	https://doi.org/10.1016/j.aquaculture.2015.01.035	pt_PT
dc.identifier.issn	0044-8486
dc.identifier.uri	http://hdl.handle.net/10400.1/10928
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Elsevier	pt_PT
dc.relation	FURTHER RESEARCH REGARDING THE DEVELOPMENT OF CUTTLEFISH SEPIA OFFICINALIS AQUACULTURE TECHNOLOGY
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0044848615000861?via%3Dihub	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Boops boops	pt_PT
dc.subject	Freeze-dried raw materials	pt_PT
dc.subject	Octopus vulgaris	pt_PT
dc.subject	Semi-moist diets	pt_PT
dc.subject	Thermal treatment	pt_PT
dc.title	Performance of raw material thermal treatment on formulated feeds for common octopus (Octopus vulgaris) ongrowing	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.awardTitle	FURTHER RESEARCH REGARDING THE DEVELOPMENT OF CUTTLEFISH SEPIA OFFICINALIS AQUACULTURE TECHNOLOGY
oaire.awardURI	info:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F36100%2F2007/PT
oaire.citation.endPage	43	pt_PT
oaire.citation.startPage	37	pt_PT
oaire.citation.title	Aquaculture	pt_PT
oaire.citation.volume	442	pt_PT
person.familyName	Sykes
person.givenName	António
person.identifier	107454
person.identifier.ciencia-id	7510-6641-5A42
person.identifier.orcid	0000-0002-5207-0612
person.identifier.rid	C-3609-2012
person.identifier.scopus-author-id	7102626426
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	restrictedAccess	pt_PT
rcaap.type	article	pt_PT
relation.isAuthorOfPublication	b9d55f95-5de8-40cf-82a3-96ec98c91a55
relation.isAuthorOfPublication.latestForDiscovery	b9d55f95-5de8-40cf-82a3-96ec98c91a55
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