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Vitamin E in cranes: reference ranges and nutrient interactions

Journal of Wildlife Diseases

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Abstract

Fat soluble vitamins E and A (quantified as alpha-tocopherol and all-trans retinol, respectively) were measured in plasma samples from 274 captive cranes from four institutions and five free-ranging birds. Ages ranged from 4 mo to 80 yr, and all 15 crane species were represented. Captive cranes had a mean +/- standard error (SE) of 6.57 +/- 0.82 micrograms/ml alpha-tocopherol; migrating greater sandhill cranes (Grus canadenis tabida) had a plasma concentration of 3.71 +/- 0.22 micrograms/ml. Sex and age differences were not significant, but crane species that evolved in temperate habitats had higher circulating levels of alpha-tocopherol than tropical or subtropical species. Mean +/- SE retinol values were 0.69 +/- 0.05 micrograms/ml in captive cranes, and 0.66 +/- 0.08 micrograms/ml in free-ranging cranes; values did not differ significantly by sex, age, or species. Dietary vitamin E concentrations were significantly correlated with plasma alpha-tocopherol levels in a logarithmic relationship. Dietary selenium at 0.5 mg/kg was associated with decreased circulating alpha-tocopherol concentrations.

Geospatial Extents

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Vitamin E in cranes: reference ranges and nutrient interactions
Series title:
Journal of Wildlife Diseases
Volume
29
Issue:
1
Year Published:
1993
Language:
English
Contributing office(s):
National Wildlife Health Center
Description:
p. 98-102
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Diseases
First page:
98
Last page:
102
Country:
United States
State:
Georgia, Maryland, New York, Wisconsin
Other Geospatial:
St Catherine's Island, Patuxent Wildlife Center, Bronx Zoo, International Crane Foundation
Online Only (Y/N):
N
Additional Online Files(Y/N):
N