Bulls need to be protected from winter winds and cold temperatures. Cold weather can result in testicle damage and semen deterioration or complete bull infertility.

The threat of scrotal frostbite greatly increases when the weather conditions include rain that turns to snow and ice, temperatures that are lower then 10 degrees Fahrenheit, or high winds.

Wind is often the greatest contributing factor because of the wind-chill factor. Providing a place for bulls to get out of the wind is the best way to prevent frostbite. Windbreaks and good bedding during bad weather can help prevent testicle freezing. Providing bedding gives bulls a layer of insulation between their reproductive organs and the frozen ground.

Bulls that are being hauled in trucks during cold weather should be protected from the wind because of the dangerous wind-chill factors. Older bulls with lower hanging scrotums are more prone to getting frostbite because mature bulls are not as able to pull their testicles up close enough to the body to keep them warm.

Even if bulls avoid scrotal frostbite they may still suffer sperm damage from exposure to cold temperatures. Fertility soundness examinations should be done if there is a chance that a bull's reproductive system has been damaged by frostbite.