What parasites should dairy producers be on the lookout for during winter months?

Cold weather may slow down pests, but parasites are a different story.

Veterinarians say now is not the time to let up the gas on deworming.

“So, as we move into the winter season, the key external parasites that dairy producers need to be on the lookout for are lice and mange mites. The lice that we worry about, there’s biting lice and sucking lice. The biting lice tend to feed on debris, skin, hair, and secretions that are on the skin’s surface, whereas those sucking lice can attach to the cow and feed on blood. The mange mites typically will live around the tail head and the hindquarters. The one that will see most often, particularly in dairy cattle, is chorioptic mange, and we also sarcoptic mange that can be a bit more severe, but it’s far less common than chorioptic,” said Dr. Jennifer Roberts, a professional services veterinarian with Boehringer-Ingelheim.

Roberts says whatever the parasite may be, they all will have an impact on your bottom line.

Related Stories
As farmers and ranchers navigate rising input costs, lawmakers are considering a roughly $15 billion aid package to help, which would be tied to the spending bill for the war with Iran.
After devastating wildfires swept through Nebraska, Sen. Deb Fischer is championing a bill to expedite the relief process for farmers and ranchers. She joins us with updates on recovery efforts, conditions on the ground, and how the ag community has stepped up to help.
Corn and soybean shipments continue to move at a steady pace as spring trade flows develop.
Bigger flocks are rebuilding egg and poultry supply.
AFBF Women’s Leadership Committee Chair Isabella Chism joined us to discuss Ag Day planning, community involvement, and supporting the future of agriculture.
EPA Administrator Scott Mason shares updates on farm equipment regulations, regional accomplishments, and federal efforts supporting agriculture in honor of National Ag Day.

LATEST STORIES BY THIS AUTHOR:

RealAg Radio host Shaun Haney says farmers there are already sounding the alarm about what this could mean for the future of ag research.
Global pork production is expected to rise in the first half of 2026, despite trade volatility stemming from shifting import policies and swine disease pressures.
Clear right-to-repair guidance reduces downtime, repair costs, and operational risk.
Tennessee State Veterinarian Dr. Samantha Batey joined us with the latest on biosecurity efforts and the state’s new “Know Before You Show” initiative.
Texas Agriculture Commissioner Sid Miller discusses the state’s latest efforts to prevent the New World screwworm from reaching Texas.
Economists are also closely watching how policy decisions in Washington could influence markets moving forward. Analysts say deferred futures for corn, soybeans, and wheat suggest markets are operating near break-even levels, not at prices that would encourage expanded production.