VITAMIN-E IN CRANES - REFERENCE RANGES AND NUTRIENT INTERACTIONS

被引:12
作者
DIERENFELD, ES
SHEPPARD, CD
LANGENBERG, J
MIRANDE, C
SPRATT, J
DEIN, FJ
机构
[1] INT CRANE FDN,BARABOO,WI 53913
[2] ST CATHERINES ISL WILDLIFE SURV CTR,MIDWAY,GA 31320
[3] NATL WILDLIFE HLTH RES CTR,MADISON,WI 53711
关键词
CRANE; DIET; NUTRITION; VITAMIN-A; VITAMIN-E; SELENIUM;
D O I
10.7589/0090-3558-29.1.98
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
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 mug/ml alpha-tocopherol; migrating greater sandhill cranes (Grus canadenis tabida) had a plasma concentration of 3.71 +/- 0.22 mug/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 mug/ml in captive cranes, and 0.66 +/- 0.08 mug/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.
引用
收藏
页码:98 / 102
页数:5
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