Antibiotics for mastitis in cows

Some cases benefit from an intramammary medicine, some require systemic treatment, and others may not benefit from antibiotics. Do not use human antibiotics, leftover farm medicines, or a product prescribed for another animal. The dose, route, course, and withdrawal instructions are specific to the cow and product.

Mastitis is inflammation of the udder and may be infectious or non-infectious. Visible changes can include clots, flakes, watery milk, an enlarged quarter, heat, and tenderness. A severely affected cow may stop eating, produce much less milk, become dehydrated, or struggle to stand.

A clean milk sample collected before treatment can help identify the organism and guide therapy. Culture results are particularly useful for repeat cases, herd outbreaks, or poor response. The veterinarian may also review milking hygiene, equipment function, bedding, teat condition, and previous records because treatment alone does not remove sources of reinfection.

Separate and clearly identify the affected cow according to the farm's veterinary plan. Milk her hygienically as directed, prevent contaminated milk entering the food supply, provide ready access to water and feed, and keep her in a clean, dry, comfortable area. Wear gloves and disinfect reusable equipment appropriately.

Record the animal, affected quarter, product, dose, route, treatment times, and the veterinarian's milk and meat withdrawal directions. Follow those directions exactly even if the milk looks normal sooner. Never estimate a withdrawal period or rely on instructions from a different formulation. Report dosing errors promptly so the veterinarian can advise on both the cow and food-safety controls.

Contact a veterinarian urgently if the cow is down, severely weak, not eating or drinking, breathing abnormally, cold at the ears or limbs, markedly dehydrated, or showing rapidly increasing udder swelling. Blood in the milk, skin discoloration over the udder, or signs of severe pain also need prompt attention.

Request reassessment when milk or udder changes worsen, another quarter becomes involved, several animals develop signs, or the cow does not respond as the veterinarian expected. Severe mastitis can require fluids, pain control, laboratory testing, and close monitoring in addition to any antimicrobial treatment.

Clarify whether a milk sample should be taken before the first dose, how to give each medicine safely, how treated milk must be managed, and which deterioration signs require an emergency visit. For recurrent cases, ask about individual cow history, milking procedure, machine checks, housing hygiene, dry-period management, and a herd-level prevention plan.