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Titolo:
Effect of dietary cod liver oil on growth and fatty acids of juvenile hybrid tilapia
Autore:
Chou, BS; Shiau, SY; Hung, SSO;
Indirizzi:
Natl Taiwan Ocean Univ, Dept Food Sci, Chilung 202, Taiwan Natl Taiwan Ocean Univ Chilung Taiwan 202 Food Sci, Chilung 202, Taiwan Univ Calif Davis, Dept Anim Sci, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 s, Dept Anim Sci, Davis, CA 95616 USA
Titolo Testata:
NORTH AMERICAN JOURNAL OF AQUACULTURE
fascicolo: 4, volume: 63, anno: 2001,
pagine: 277 - 284
SICI:
1522-2055(200110)63:4<277:EODCLO>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
X OREOCHROMIS-AUREUS; CHANNEL CATFISH; NUTRITIVE-VALUE; NILOTICUS; LIPIDS; FISH; REQUIREMENTS; PERFORMANCE; STARVATION; CONVERSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Shiau, SY Natl Taiwan Ocean Univ, Dept Food Sci, Chilung 202, Taiwan Natl Taiwan Ocean Univ Chilung Taiwan 202 Chilung 202, Taiwan
Citazione:
B.S. Chou et al., "Effect of dietary cod liver oil on growth and fatty acids of juvenile hybrid tilapia", N AM J AQUA, 63(4), 2001, pp. 277-284

Abstract

An 8-week growth trial was conducted to determine the effects of differentlevels of cod liver oil (CLO) on growth and tissue fatty acids of male hybrid tilapia (Nile tilapia Oreochromis niloticus X blue tilapia O. aureus). Eight isonitrogenous and isoenergetic diets containing various percentages of dodecanoic acid and CLO (5.0:0, 4.5:0.5, 4.0:1.0, 3.5:1.5, 3.0:2.0, 2.0:3.0, 1.0:4.0, 0:5.0) were fed to triplicate groups of tilapia with an initial body weight of 0.83 g (SD = +/-0.03). The fish were kept at 26 +/- 1 degreesC in aquaria connected to a freshwater water-recirculating system. Tilapia fed diets with 2.0% or more CLO had a significantly (alpha = 0.05) higher specific growth rate, feed efficiency, and protein deposition than thosefed diets with lower CLO. Percent muscle and liver fatty acid 18:3, n-3 (where the ratio is the number of carbon atoms to the number of double bonds,and n designates the position of the first double bond); 20:5, n-3; 22:5, n-3; and 22:6, n-3 increased with increasing CLO, but 20:3, n-9 decreased significantly. Tilapia fed a diet without any CLO had significantly lower growth performances and showed a typical n-3 deficiency, with the ratio of liver (20:3, n-9) and muscle (22:6, n-3) fatty acids greater than 0.4. This study lends more support to our previous report that besides n-6, hybrid tilapia may also require n-3 fatty acids for maximum growth.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 12:14:39