Colorado Division of Wildlife managers say they've determined culling random deer doesn't seem to reduce the prevalence of chronic-wasting disease.

The wildlife officials told the Boulder (Colo.) Daily Camera the state will halt the culling operation this year.

Officials have been systematically killing randomly selected deer in herds suffering from CWD for four years to prevent the spread of the disease.

Chronic-wasting disease is similar to mad cow disease, in that it creates sponge-like holes in the animals' brains, causing them to lose weight, stagger and die.

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