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Titolo:
Carotenoid discrimination by the avian embryo: a lesson from wild birds
Autore:
Surai, PF; Speake, BK; Wood, NAR; Blount, JD; Bortolotti, GR; Sparks, NHC;
Indirizzi:
Scottish Agr Coll, Avian Sci Res Ctr, Auchincruive KA6 5HW, Ayr, Scotland Scottish Agr Coll Auchincruive Ayr Scotland KA6 5HW A6 5HW, Ayr, Scotland Wessex Geese, Sherborne DT95AB, Dorset, England Wessex Geese Sherborne Dorset England DT95AB orne DT95AB, Dorset, England Univ Glasgow, Inst Biomed & Life Sci, Ornithol Grp, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow Glasgow Lanark Scotland G12 8QQ ow G12 8QQ, Lanark, Scotland Univ Saskatchewan, Dept Biol, Saskatoon, SK S7N 5E2, Canada Univ Saskatchewan Saskatoon SK Canada S7N 5E2 skatoon, SK S7N 5E2, Canada
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
fascicolo: 4, volume: 128, anno: 2001,
pagine: 743 - 750
SICI:
1096-4959(200104)128:4<743:CDBTAE>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
BETA-CAROTENE; EGG-YOLK; ALPHA-TOCOPHEROL; CHICK-EMBRYO; VITAMIN-A; ABSORPTION; SUPPLEMENTATION; TRANSPORT; TISSUES; LUTEIN;
Keywords:
carotenoids; lutein; beta-carotene; coot; moorhen; gull; egg yolk; tissues; chick;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Surai, PF Scottish Agr Coll, Avian Sci Res Ctr, Auchincruive KA6 5HW, Ayr,Scotland Scottish Agr Coll Auchincruive Ayr Scotland KA6 5HW r, Scotland
Citazione:
P.F. Surai et al., "Carotenoid discrimination by the avian embryo: a lesson from wild birds", COMP BIOC B, 128(4), 2001, pp. 743-750

Abstract

The concentrations (mug/g wet yolk) of total carotenoids in eggs of the common moorhen (Gallinula chloropus), American coot (Fulica americana) and lesser black-backed gull (Larus fuscus), collected in the wild, were 47.5, 131.0 and 71.6, respectively. In contrast to data for eggs of the domestic chicken, beta -carotene was a significant component in the yolks of these three wild species, forming 25-29% by wt, of the total carotenoids present. The concentration of total carotenoids in the livers of the newly-hatched chicks was 5-10 times higher than in the other tissues and beta -carotene was again a major component, forming 37-58% of the hepatic carotenoids. In the newly-hatched gull, the proportions of both lutein and zeaxanthin were verylow in the liver but high in the heart and muscle when compared with the yolk. By contrast canthaxanthin, echinenone and beta -carotene were very minor constituents of heart and muscle when compared with their proportions inthe yolk of the gull. The proportions of lutein and zeaxanthin in the liver of the newly-hatched coot and moorhen were also far lower than in the yolk whereas the liver was relatively enriched with beta -cryptoxanthin, beta -carotene and (in the moorhen) echinenone. The results indicate that avian embryos discriminate between different carotenoids during their distribution from the yolk to the various tissues. (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 09/04/20 alle ore 06:35:47