Plasma concentrations of vitamin E in six species of bustard (Gruiformes: Otididae)
| Autor: | Tom A. Bailey, Christu-Das Silvanose, Adekunle Dawodu, Susan J. Anderson, Mahendra Patel |
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| Rok vydání: | 2002 |
| Předmět: |
Neotis
medicine.medical_specialty Eupodotis Ecology biology alpha-Tocopherol Age Factors biology.organism_classification Chlamydotis Birds Eupodotis ruficrista Ardeotis Endocrinology Animal science Cholesterol Species Specificity Reference Values Internal medicine medicine Juvenile Animals Bustard Eupodotis senegalensis Ecology Evolution Behavior and Systematics |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0090-3558 |
| Popis: | Vitamin E (measured as alpha-tocopherol) and cholesterol concentrations were determined in plasma samples collected from 86 clinically healthy captive adult bustards of six species and 23 captive juveniles (6-12 mo old) of two of these species. Adult houbara bustards (Chlamydotis undulata macqueenii) had higher plasma alpha-tocopherol concentrations than juveniles (adult: mean +/- SE, 11.07 +/- 0.41 micrograms/ml, n = 32; juvenile: 6.33 +/- 0.48, n = 12) and higher alpha-tocopherol: cholesterol ratios (adult: 6.09 +/- 0.44, n = 12; juvenile: 2.94 +/- 0.22, n = 11). No age difference was evident for kori bustard (Ardeotis kori) plasma alpha-tocopherol concentrations (adult: 4.43 +/- 0.42, n = 21; juvenile: 4.46 +/- 0.26, n = 11) or alpha-tocopherol: cholesterol ratios (adult: 3.67 +/- 0.44, n = 20; juvenile: 3.71 +/- 0.36, n = 11). Adult houbara bustards had significantly higher (P0.01) alpha-tocopherol concentrations compared with adult rufous-crested (Eupodotis ruficrista; 6.64 +/- 0.33, n = 19) and white-bellied (Eupodotis senegalensis; 7.75 +/- 0.81, n = 8) bustards, but similar alpha-tocopherol: cholesterol ratios (rufous-crested: 5.56 +/- 0.32, n = 18; white-bellied: 5.83 +/- 0.43, n = 8). Juvenile houbara bustards had higher plasma alpha-tocopherol concentrations than juvenile kori bustards but similar alpha-tocopherol:cholesterol ratios. Adult houbara bustard plasma alpha-tocopherol levels and alpha-tocopherol:cholesterol ratios did not differ significantly between sexes. The vitamin E status of adult bustards appeared to be influenced by environmental conditions that varied due to species-specific husbandry regimens, but no clear relationship was seen with dietary vitamin E levels. Juvenile bustards did not have higher vitamin E levels than adults, despite being maintained on four-fold dietary vitamin E concentrations and in similar environmental conditions. This paper presents the first published data for plasma vitamin E concentrations in bustards. The plasma alpha-tocopherol and cholesterol concentrations and alpha-tocopherol:cholesterol ratios of captive bustards were similar to those previously reported for omnivorous avian species. Further research is required to determine which components of the identified environmental conditions affect bustard vitamin E status and to confirm whether differences exist between species independent of the variation in their management regimes. |
| Databáze: | OpenAIRE |
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