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Titolo:
A description of ammonium content of output waters from trout farms in relation to stocking density and flow rates
Autore:
Bergero, D; Forneris, G; Palmegiano, GB; Zoccarato, I; Gasco, L; Sicuro, B;
Indirizzi:
Univ Turin, Dipartimento Prod Anim Epidemiol Ecol, I-10126 Turin, Italy Univ Turin Turin Italy I-10126 Anim Epidemiol Ecol, I-10126 Turin, Italy CNR, Ctr Studio Alimentaz Anim Prod Zootecn, CSAAPZ, Turin, Italy CNR Turin Italy tudio Alimentaz Anim Prod Zootecn, CSAAPZ, Turin, Italy Univ Turin, Dipartimento Sci Zootecn, Turin, Italy Univ Turin Turin Italy iv Turin, Dipartimento Sci Zootecn, Turin, Italy
Titolo Testata:
ECOLOGICAL ENGINEERING
fascicolo: 4, volume: 17, anno: 2001,
pagine: 451 - 455
SICI:
0925-8574(200108)17:4<451:ADOACO>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
AQUACULTURE;
Keywords:
fish; ammonium; excretion; waste; fish culture; pollution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Bergero, D Univ Turin, Dipartimento Prod Anim Epidemiol Ecol, Via Nizza 52, I-10126 Turin, Italy Univ Turin Via Nizza 52 Turin Italy I-10126 10126 Turin, Italy
Citazione:
D. Bergero et al., "A description of ammonium content of output waters from trout farms in relation to stocking density and flow rates", ECOL ENG, 17(4), 2001, pp. 451-455

Abstract

Daily levels of ammonium content in the outflow water of an intensive trout farm and of a mountain pond stocked with rainbow trout were monitored. Output water was sampled for 30 days and analysed every 30 min by an automatic ion selective electrode system (Applikon ADI 2013); input water was also monitored. The ammonium output level was influenced more by atmospheric events than nitrogen excretion by fish. Observed data confirmed an overall ammonium excretion model previously estimated in both laboratory and field conditions. The high water how, that characterises the intensive trout farm where the observations were made induced a high dilution of metabolites. Consequently. if the peaks of ammonium output did not reach values of 0.35-0.40mg l(-1) the environmental impact was limited and not easily detected. Ourresults allow us to affirm that the optimal level of water flow rate for effective zeolite-operated filtration is around 10.3 l t(-1) s(-1). (C) 2001Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 12:05:06