A rapid bioassay for the comparison of xanthophyll availability from various sources [Broiler chickens, diets]

A rapid bioassay for the comparison of xanthophyll availability from various sources [Broiler chickens, diets]

A rapid bioassay method for comparing xanthophyll availability from various sources or the pigmenting ability of genetic strains or crosses is proposed. Xanthophyll depleted, fasted birds are intubated with equal amounts of xanthophyll from various sources. Serum xanthophyll is then determined from...

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Veröffentlicht in:Poultry science 1980-07, Vol.59 (7), p.1442-1450
Hauptverfasser: Middendorf, D F, Childs, G R, Cravens, W W
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Biological Assay - methods
Biological Availability
Chickens - blood
Chickens - metabolism
Diet
Female
Glycine max
Lutein - blood
Lutein - metabolism
Male
Triticum
Zea mays
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Zusammenfassung:A rapid bioassay method for comparing xanthophyll availability from various sources or the pigmenting ability of genetic strains or crosses is proposed. Xanthophyll depleted, fasted birds are intubated with equal amounts of xanthophyll from various sources. Serum xanthophyll is then determined from blood samples obtained 14 to 24 hr following intubation. Results are expressed as the increase in serum xanthophyll (microgram/ml) over the intubated controls per milligram xanthophyll intubated per kilogram body weight. Limitations of the bioassay are discussed.
ISSN:0032-5791
1525-3171
DOI:10.3382/ps.0591442