Cool weather slows anthrax in park bison

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Published: August 16, 2007

Cool, wet weather has slowed the spread of anthrax among bison at Wood Buffalo National Park in northern Alberta.

As of Aug. 4, 61 bison carcasses were found and none since, said Mike Keizer, park communications manager.

Park officials were running daily helicopter surveys using heat scanning equipment to detect decomposing carcasses in the heavily forested regions of the park.

Record heat at 30 C helped spread the disease starting July 17 but cooler temperatures in the last week appear to have curtailed it.

“It has been cool and wet up here, which seems to slow down the anthrax,” said Keizer.

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Many of the dead animals were found near a public camping ground so additional steps were taken to remove and destroy carcasses. All were treated with formaldehyde to discourage scavengers and then the carcasses were burned for five days.

The ash and surrounding ground was also treated again with formaldehyde to destroy any remaining anthrax spores.

“Lime doesn’t work because we have found bears with lime on their faces,” he said.

This is the third anthrax outbreak for the park in 13 years.

No deer were affected. There are no elk in the park where about 5,400 bison roam in dense forest. The park is the second largest in the world so staff may not find all the dead animals.

About the author

Barbara Duckworth

Barbara Duckworth

Barbara Duckworth has covered many livestock shows and conferences across the continent since 1988. Duckworth had graduated from Lethbridge College’s journalism program in 1974, later earning a degree in communications from the University of Calgary. Duckworth won many awards from the Canadian Farm Writers Association, American Agricultural Editors Association, the North American Agricultural Journalists and the International Agriculture Journalists Association.

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