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1 June 2008 Alpha-Tocopherol in Captive Falcons: Reference Values and Dietary Impact
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Abstract

To determine reference values for plasma alpha-tocopherol concentrations in falcons and to investigate a possible dietary impact, 29 falcons were randomly selected from a collection of 500 captive breeding falcons fed with 4-week-old chicks. Blood samples collected from each falcon were analyzed for plasma alpha-tocopherol concentrations. Reference values were 16.7–46.1 mg/L with a mean plasma alpha-tocopherol concentration of 27.5 ± 8.7 mg/L. A group of 5 gyr-saker falcon hybrids (Falco rusticolus × Falco cherrug) were fed 1-day-old chicks for 4 weeks; the resultant mean plasma alpha-tocopherol concentration was 34.9 ± 5.6 mg/L. When the diet was changed to turkey breast meat for 4 weeks, the mean plasma alpha-tocopherol concentration decreased significantly to 13.1 ± 2.6 mg/L. Results appeared to support the influence of diet on plasma alpha-tocopherol concentrations in falcons.

Bianka Schink, Hafez M. Hafez, and Michael Lierz "Alpha-Tocopherol in Captive Falcons: Reference Values and Dietary Impact," Journal of Avian Medicine and Surgery 22(2), 99-102, (1 June 2008). https://doi.org/10.1647/2007-014R.1
Published: 1 June 2008
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