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Titolo:
Effects of dietary fatty acids on the respiratory and cardiovascular physiology of fish
Autore:
McKenzie, DJ;
Indirizzi:
Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
fascicolo: 3, volume: 128, anno: 2001,
pagine: 607 - 621
SICI:
1095-6433(200103)128:3<607:EODFAO>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
STURGEON ACIPENSER-NACCARII; SALMON SALMO-SALAR; OXYGEN-CONSUMPTION; EUROPEAN EEL; ANGUILLA-ANGUILLA; LIPID-COMPOSITION; SKELETAL-MUSCLE; BETA-OXIDATION; METABOLIC-RATE; ATLANTIC COD;
Keywords:
cardiac performance; eel; exercise performance; hypoxia; metabolic rate; n-3 fatty acids; salmon; sturgeon;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: McKenzie, DJ CESI, ENEL, Staz Idrobiol Fluviale Casella, Via Argine Ballottino, I-29010Sarmato, PC, Italy CESI Via Argine Ballottino Sarmato PC ItalyI-29010 PC, Italy
Citazione:
D.J. McKenzie, "Effects of dietary fatty acids on the respiratory and cardiovascular physiology of fish", COMP BIOC A, 128(3), 2001, pp. 607-621

Abstract

In animals, the composition of fatty acids (FAs) in body pools reflects dietary intake. This paper reviews evidence that the manipulation of tissue lipids of farmed fish, by feeding them different natural oils: can have significant effects on their respiratory and cardiovascular physiology. Sturgeon and eels with tissue lipids rich in highly unsaturated FAs of the n-3 series (n-3HUFAs, accumulated from dietary menhaden oil) had significantly lower metabolic rates than fish with tissues rich in saturated FAs (SFAs, fromcoconut oil), although they grew equally well. In sturgeon, the differencein metabolism influenced tolerance of hypoxia. Degrees of hypoxia that depressed oxygen uptake and spontaneous activity in fish rich in SFAs had no such effects on fish rich in n-3HUFAs. In the isolated sturgeon heart working in vitro, reduced oxygen supply depressed the performance of hearts with lipids rich in SFAs but not that of hearts rich in n-3HUFAs. In salmon fed diets with graded mixtures of menhaden and canola oils, there was no relationship between tissue n-3HUFA content (from menhaden oil) and any measured aspect of swimming performance, but a linear relationship between maximum sustainable swimming speed and muscle oleic acid levels (from canola oil). Such exploratory studies indicate that an animal's responses to its environment may be profoundly affected by the oils and FAs it consumes in its diet. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 00:00:20