Selenium accumulation in captive American kestrels (Falco sparverius) fed selenomethionine and naturally incorporated selenium
- Univ. of California, Davis, CA (United States). Dept. of Animal Science
- CH2M Hill, Sacramento, CA (United States)
Male-female pairs of kestrels were maintained for 11 weeks on diets containing 5 or 9 ppm selenium (Se) (dry weight) as seleno-L-methionine, or naturally incorporated Se in the form of mammals collected at Kesterson Reservoir, CA, USA. Selenium concentrations in blood and excreta of male and female kestrels within groups were similar. Near-maximal mean Se concentrations in blood were observed after the 5th week of treatment in the seleno-L-methionine-treated kestrels, and an approximately 1:1 ratio was observed between maximal blood concentrations and dietary concentrations. All treatment groups exhibited reduction of Se concentration in excreta, but not in blood, to baseline values 4 weeks after treatment ended. No birds were observed to exhibit signs of general illness or Se toxicity during the study.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 305462
- Journal Information:
- Environmental Toxicology and Chemistry, Vol. 17, Issue 12; Other Information: PBD: Dec 1998
- Country of Publication:
- United States
- Language:
- English
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