Locating the Site of Absorption of Xanthophylls in the Chicken by a Surgical Technique

Littlefield, L. H.; Bletner, J. K.; Shirley, H. V.; Goff, O. E.

doi:10.3382/ps.0511721

Cited by 14 publications

(4 citation statements)

References 9 publications

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“…Chickens infected with E. acervulina exhibit reduced plasma levels of protein, carotene, and vitamin A, as shown by Kouwenhoven and van der Horst (470). Littlefield et al (510) surgically removed the portion of the jejunum-ileum normally inhabited by Eimeria maxima and, on the basis of blood carotenoid concentration and visual observation of pigmentation after a 2-week feeding period of a ration high in oxycarotenoids, found no significant absorption of xanthophylls. Littlefield et al (510) surgically removed the portion of the jejunum-ileum normally inhabited by Eimeria maxima and, on the basis of blood carotenoid concentration and visual observation of pigmentation after a 2-week feeding period of a ration high in oxycarotenoids, found no significant absorption of xanthophylls.…”

Section: B Diseasesmentioning

confidence: 92%

Oxycarotenoids in Poultry Feeds

Marusich¹,

Bauernfeind²

1981

Carotenoids as Colorants and Vitamin a Precursors

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Section: B Diseasesmentioning

confidence: 92%

Oxycarotenoids in Poultry Feeds

Marusich¹,

Bauernfeind²

1981

Carotenoids as Colorants and Vitamin a Precursors

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“…Various factors can affect the degree of pigmentation obtained in broilers. Upper intestinal tract coccidial infections can cause a reduction in pigmentation (Ruff and Britton, 1976), because the majority of xanthophyll absorption takes place in the jejenum-ileum region of the intestine (Littlefield et al, 1972). Therefore, coccidiostats and antibiotics, when added to the diet, enhance pigmentation (Olson et al, 1972;Fry and Harms, 1974;Harms et al, 1976).…”

Section: Introductionmentioning

confidence: 97%

The Influence of Different Xanthophyll-Containing Feedstuffs on Pigmentation of Broilers Reared in Open and Windowless Houses

1985

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In two experiments, yellow corn, corn gluten meal, alfalfa, or combinations of these pigment-containing feedstuffs were incorporated into finisher diets and fed from 29 to 56 days to broilers housed in either open or windowless houses. Dominant wavelength (DWL), excitation purity, luminosity of shanks, and blood xanthophyll levels at 56 days were determined. Xanthophyll consumption was also calculated.Xanthophyll consumption and blood xanthophyll levels within treatments were inversely related. Shank pigmentation values indicated that feeding xanthophyll supplements containing zeaxanthin, such as yellow corn or corn gluten meal, provided higher DWL; corn gluten meal produced the most acceptable values. Inferior pigmentation was observed in shanks from broilers reared in windowless houses, but pigmentation was improved when corn gluten meal was fed as the source of xanthophyll. It was concluded that the relative higher ratio of zeaxanthin to lutein present in corn gluten meal was responsible for the pigmentation improvement of broilers reared in windowless houses when this feedstuff was fed. (Key words: pigmentation, broiler, xanthophyll, windowless housing) 1985 Poultry Science 64:925-931 925 at East Tennessee State University on May 31, 2015 http://ps.oxfordjournals.org/ Downloaded from

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“…In birds, the duodenum and jejunum are the key sites for carotenoid absorption ( Tyczkowski and Hamilton 1986 ). Studies showed high concentrations of lutein and carotenoids in the duodenum and jejunum ( Littlefield et al, 1972 ; Phelan et al, 2018 ). Although the carotenoid content of the duodenum and jejunum is similar in chicken, the mucosal extracts of the duodenum are more lipid soluble than those of the jejunum and ileum ( McLean et al, 2005 ).…”

Section: Introductionmentioning

confidence: 99%