Effects of light spectrum on growth and stress response of rainbow trout Oncorhynchus mykiss reared under recirculating system conditions

dc.contributor.author	Karakatsouli, N	en
dc.contributor.author	Papoutsoglou, SE	en
dc.contributor.author	Panopoulos, G	en
dc.contributor.author	Papoutsoglou, ES	en
dc.contributor.author	Chadio, S	en
dc.contributor.author	Kalogiannis, D	en
dc.date.accessioned	2014-06-06T06:48:49Z
dc.date.available	2014-06-06T06:48:49Z
dc.date.issued	2008	en
dc.identifier.issn	01448609	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.aquaeng.2007.10.006	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4283
dc.subject	Confinement	en
dc.subject	Growth	en
dc.subject	Light spectrum	en
dc.subject	Oncorhynchus mykiss	en
dc.subject	Stress	en
dc.subject.other	Aquaculture	en
dc.subject.other	Fish	en
dc.subject.other	Fluorescent lamps	en
dc.subject.other	Growth kinetics	en
dc.subject.other	Physiology	en
dc.subject.other	Stress analysis	en
dc.subject.other	Light spectrum	en
dc.subject.other	Oncorhynchus mykiss	en
dc.subject.other	Rainbow trout	en
dc.subject.other	Red light	en
dc.subject.other	Light	en
dc.subject.other	fishery management	en
dc.subject.other	growth response	en
dc.subject.other	light effect	en
dc.subject.other	physiology	en
dc.subject.other	recirculating system	en
dc.subject.other	salmonid	en
dc.subject.other	stress resistance	en
dc.subject.other	Oncorhynchus mykiss	en
dc.title	Effects of light spectrum on growth and stress response of rainbow trout Oncorhynchus mykiss reared under recirculating system conditions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.aquaeng.2007.10.006	en
heal.publicationDate	2008	en
heal.abstract	Fish growth and physiology may be affected by light spectrum, which can be easily manipulated in indoor aquaculture facilities, and especially recirculating water systems, with little cost. Since data related to light spectrum and widely reared fish are still few, the present study aimed to investigate the effects of coloured light on growth performance and stress response to confinement of rainbow trout Oncorhynchus mykiss. Fish (145.3 ± 1.5 g) were reared under white (full spectrum, fluorescent lamps), red (605 nm) and blue (480 nm) light (lamps covered with appropriate filters) for 111 days under recirculating water systems (150 lx, 12L-12D). At the end of the experimental period and for each light treatment, fish were either subjected for 1 h to confinement stress or remained undisturbed (control groups). Total length of the fish reared under red light was greater than that of the other regimes, whereas other growth parameters showed a similar trend but were not significantly different from one another. Carcass proximate composition was not affected by light spectrum. Fish exposed to confinement showed typical primary (high cortisol) and secondary (high glucose and haematocrit, liver lipid mobilization, osmotic and ionic disturbances, blood acidosis, etc.) stress responses. Nevertheless, in fish reared under blue light, stress-induced cortisol increase was lower and liver lipids mobilization was absent compared with white light (significant interaction). Present results indicate that if stressors are kept to a minimum then red light could be suggested for the intensive rearing of rainbow trout. © 2007 Elsevier B.V. All rights reserved.	en
heal.journalName	Aquacultural Engineering	en
dc.identifier.issue	1	en
dc.identifier.volume	38	en
dc.identifier.doi	10.1016/j.aquaeng.2007.10.006	en
dc.identifier.spage	36	en
dc.identifier.epage	42	en