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  • Title: Winter blood values of selected parameters in a group of non-hibernating captive brown bears (Ursus arctos).
    Author: Sergiel A, Bednarski M, Maślak R, Piasecki T, Huber D.
    Journal: Pol J Vet Sci; 2015; 18(4):885-8. PubMed ID: 26812835.
    Abstract:
    Bears undergo some significant changes reflected in blood values during winter season. The most significant are reduced urea and increased creatinine, by some authors considered to be physiological indicators of hibernation. Studied group of six captive brown bears (Ursus arctos) showed decreased activity in winter but were accepting food and walked outdoors. Blood parameters assessed in February 2011 revealed mean values of leucocytes and neutrophils as significantly lower, and creatinine significantly increased compared to captive and free living bears sampled during other seasons when bears are active.
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