000149864 001__ 149864
000149864 005__ 20250128160611.0
000149864 0247_ $$2doi$$a10.3390/w13213057
000149864 0248_ $$2sideral$$a126827
000149864 037__ $$aART-2021-126827
000149864 041__ $$aeng
000149864 100__ $$aVillarroel M.
000149864 245__ $$aEffects of randomly fired underwater currents as an occupational enrichment program in rainbow trout (Oncorhynchus mykiss)
000149864 260__ $$c2021
000149864 5060_ $$aAccess copy available to the general public$$fUnrestricted
000149864 5203_ $$aOccupational enrichment (OE) is directed at introducing variations in the tank water so that fish can exercise as they do in the wild. Two trials were carried out to test the effects of randomly fired underwater currents (RFC) on rainbow trout (Oncorhynchus mykiss) maintained in tanks in a recirculation system, using 1226 trout distributed in two independent trials. In Trial 1, fingerling trout (n = 6 tanks, n = 40 fish per tank) were classified into two groups based on low (13%) or high (30%) coefficient of variation in live weight (CV), and exposed to RFC or no currents (controls). In Trial 2, adult trout (n = 12 tanks, n = 20 fish per tank) were either exposed to RFC or to a constant current (controls) from two submerged pumps. Both trials lasted four weeks. No significant differences in growth were observed between treatments in either trial. In Trial 1, RFC fish maintained a similar CV throughout the trial, while CV decreased in controls. Also, in Trial 1, plasma cortisol levels were higher and creatine phosphokinase (CPK) levels lower in tanks with a low initial CV. In Trial 2, the CV was lower in RFC trout, where cortisol levels were also significantly lower and triglycerides significantly higher. The results suggest that OE using RFC can have positive effects by helping to reduce stress levels, and provides fish with biologically meaningful environmental enrichment related to the natural history of the species. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
000149864 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000149864 590__ $$a3.53$$b2021
000149864 591__ $$aWATER RESOURCES$$b36 / 99 = 0.364$$c2021$$dQ2$$eT2
000149864 591__ $$aENVIRONMENTAL SCIENCES$$b148 / 279 = 0.53$$c2021$$dQ3$$eT2
000149864 592__ $$a0.716$$b2021
000149864 593__ $$aAquatic Science$$c2021$$dQ1
000149864 593__ $$aGeography, Planning and Development$$c2021$$dQ1
000149864 593__ $$aBiochemistry$$c2021$$dQ1
000149864 594__ $$a4.8$$b2021
000149864 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000149864 700__ $$0(orcid)0000-0002-6848-1010$$aMiranda-De la Lama G.C.$$uUniversidad de Zaragoza
000149864 700__ $$aBermejo-Poza R.
000149864 700__ $$aPérez C.
000149864 700__ $$aGonzález-De Chávarri E.
000149864 700__ $$aTorrent F.
000149864 700__ $$aDe la Fuente J.
000149864 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Producción Animal
000149864 773__ $$g13, 21 (2021), 3057 [10 pp]$$pWater (Basel)$$tWater (Switzerland)$$x2073-4441
000149864 8564_ $$s473101$$uhttps://zaguan.unizar.es/record/149864/files/texto_completo.pdf$$yVersión publicada
000149864 8564_ $$s2660919$$uhttps://zaguan.unizar.es/record/149864/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000149864 909CO $$ooai:zaguan.unizar.es:149864$$particulos$$pdriver
000149864 951__ $$a2025-01-28-14:57:32
000149864 980__ $$aARTICLE