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Titolo:
Quality of farmed salmonids with emphasis on proximate composition, yield and sensory characteristics
Autore:
Rasmussen, RS;
Indirizzi:
Univ Aalborg, Dept Civil Engn, Aquaculture Div, Aalborg, Denmark Univ Aalborg Aalborg Denmark il Engn, Aquaculture Div, Aalborg, Denmark
Titolo Testata:
AQUACULTURE RESEARCH
fascicolo: 10, volume: 32, anno: 2001,
pagine: 767 - 786
SICI:
1355-557X(200110)32:10<767:QOFSWE>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
TROUT ONCORHYNCHUS-MYKISS; FATTY-ACID COMPOSITION; RECOMBINANT PORCINE SOMATOTROPIN; RAINBOW-TROUT; ATLANTIC SALMON; BODY-COMPOSITION; GROWTH-RATE; GAIRDNERI RICHARDSON; CHEMICAL-COMPOSITION; FEED CONVERSION;
Keywords:
salmonids; quality; proximate composition; slaughter yield; sensory characteristics;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
155
Recensione:
Indirizzi per estratti:
Indirizzo: Rasmussen, RS Agade 22,1 Th, DK-9000 Aalborg, Denmark Agade 22,1 Th Aalborg Denmark DK-9000 000 Aalborg, Denmark
Citazione:
R.S. Rasmussen, "Quality of farmed salmonids with emphasis on proximate composition, yield and sensory characteristics", AQUAC RES, 32(10), 2001, pp. 767-786

Abstract

Salmonid aquaculture has focused for many years on enhancing the quantity of fish produced. However, optimization of the quality of salmonids may lead to improved consumer acceptance and higher prices for the farmed product. The present review evaluates how the quality of salmonids is affected by parameters such as feed type, level of dietary intake (ration) and growth. Feed composition has a major influence on the proximate composition of salmonids. In particular, whole body lipid as well as the lipid content in the edible fillet is directly related to dietary fat content, while the fatty acid composition of the fish flesh is also strongly influenced by the dietaryfatty acid profile. While fish body composition appears to be largely influenced by feed composition, an increase in other parameters such as feed ration and fish size also results in enhanced adipose deposition and decreased water content in the fish body. The protein content, however, remains more or less stable. An increase in fish body lipid content is not necessarilya negative factor, depending upon the processing procedure that follows. However, an increase in body fat content is generally accompanied by a reduction in slaughter yield, owing to an increase in the weight of viscera in relation to body weight. Although salmonid flesh quality with respect to levels of proximate constituents and yield appears to be under the strong influence of feed composition and feed amount, the sensory characteristics, such as odour, flavour, texture, etc., are only governed by these factors to asmall degree. Tactics for the rearing of salmonids for specific purposes should therefore take into consideration the fact that the level of proximate constituents in the whole body as well as the fillet are readily manipulated by feed composition and feeding strategies, whereas the sensory parameters are less affected by these variables.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 13:36:05