HEMATOLOGICAL AND BLOOD CHEMICAL VALUES OF MALLARD, Anas p. platyrhynchos, DRAKES BEFORE, DURING AND AFTER REMIGE MOULT

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Abstract
Hematological and blood chemical values were determined for wild and captive mallards, A. p. platyrhynchos, for the late spring period prior to remige molt through early fall migration. Hb, packed cell volume, erythrocyte and total leukocyte counts, as well as the number of heterophils and lymphocytes, declined significantly during and after remige molt compared to values recorded prior to remige molt. During fall migration mallard drakes had elevated levels of glucose and uric acid. No significant changes were observed in total protein, alkaline phosphatase, glutamic oxaloacetic transaminase or creatine phosphokinase in pre- or post-molt periods. The hematological and biochemical values should prove useful in providing background information on mallard drakes, and documenting baseline data for intra and interspecies comparisons with diseased birds.

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