Circadian rhythms of determined blood chemistry values in buzzards and eagle owls |
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| Affiliation: | 1. UWA Institute of Agriculture and School of Animal Biology, The University of Western Australia, Crawley 6009, Australia;2. College of Animal Science and Technology, Gansu Agricultural University, 730070, PR China |
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| Abstract: | - 1.1. Fifteen values were determined in blood samples from six buzzards (Buteo buteo) and six eagle owls (Bubo bubo) over the 24 hr of the day.
- 2.2. Glucose, urea, uric acid, triglyceride and calcium values showed diurnal rhythms in both species. Their respective patterns of diurnal variation were compared.
- 3.3. Phosphorus, cholesterol and cholinesterase levels underwent circadian rhythms only in the buzzards. Albumin/globulin and amylase exhibited diurnal variations exclusively in the eagle owls.
- 4.4. Glutamatic oxaloacetic transaminase, albumin, globulin, total protein and creatinine concentrations did not show diurnal rhythms in either of the species.
- 5.5. Blood values of the different parameters were studied on the basis of the ranges described in birds.
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