Blood chemistry and hematocrit of captive and wild canvasbacks

Journal of Wildlife Management
By: , and 



Blood chemistry and packed cell volume (PCV) did not vary among groups of captive canvasbacks (Aythya valisineria) maintained ad libitum on 5 diets varying in metabolizable energy (ME) and protein. Ducks fed low quality diets increased their consumption so that all ducks were obtaining similar amounts of energy and protein. Some variables, including cholesterol, were found to differ between the sexes and ages of captive ducks. Seasonal differences were detected in the blood chemistry of captive canvasbacks. Four of the 5 enzyme values increased from October to January and then declined to April. PCV increased from 45 in October to 51 in April. Overall, blood chemistry values and PCV's were highly variable and did not appear to be good discriminators for age, sex, and diet of captive canvasbacks. Differences detected between captive and wild canvasbacks were attributed to increased stress of wild ducks during handling.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Blood chemistry and hematocrit of captive and wild canvasbacks
Series title Journal of Wildlife Management
Volume 50
Issue 3
Year Published 1986
Language English
Contributing office(s) Patuxent Wildlife Research Center
Description 435-441
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Wildlife Management
First page 435
Last page 441
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