Cefquinome for Ox: Uses, Dosing & Availability Notes

This information is for educational purposes only. Never give your pet any medication without your veterinarian's guidance. Dosing, frequency, and safety depend on your pet's specific health profile.

Cefquinome is a fourth-generation cephalosporin antibiotic used in food animals in some countries. It works by disrupting bacterial cell wall formation, which makes it active against a range of gram-positive and gram-negative bacteria. In cattle medicine outside the United States, it is commonly marketed as injectable or intramammary products such as Cobactan and Cobactan LC.

For oxen and other cattle, cefquinome is not a routine at-home medication. It is a prescription drug that should only be selected by your vet after considering the infection site, likely bacteria, culture results when available, and food-animal residue rules. Because cephalosporins are medically important antibiotics, careful stewardship matters.

A key availability note for U.S. readers: cefquinome is not an FDA-approved cattle drug in the United States. That matters because U.S. rules also prohibit many extralabel cephalosporin uses in major food-producing species. If your ox needs treatment in the U.S., your vet will usually choose from approved cattle antibiotics instead.

In countries where labeled cattle products are available, cefquinome is used for susceptible bacterial infections such as bovine respiratory disease, some interdigital infections including foot rot, and certain mastitis cases. Intramammary cefquinome products are labeled in some markets for clinical mastitis in lactating dairy cows caused by organisms such as Streptococcus uberis, Streptococcus dysgalactiae, Staphylococcus aureus, and Escherichia coli.

Injectable cefquinome products used in cattle outside the U.S. are commonly directed at respiratory disease associated with pathogens like Mannheimia haemolytica, Pasteurella multocida, and sometimes Histophilus somni. Some labels also include acute mastitis with systemic illness and interdigital bacterial disease.

That does not mean cefquinome is the right choice for every ox with fever, lameness, coughing, or udder changes. Many problems that look infectious are not bacterial, and even true bacterial infections vary in severity and drug susceptibility. Your vet may recommend culture, milk testing, or a different antibiotic based on local resistance patterns and legal use restrictions.

Cefquinome dosing in cattle depends on the product, country, indication, route, and food-withdrawal rules. Published cattle labels outside the U.S. commonly use injectable cefquinome at 1 mg/kg intramuscularly once daily for 3 to 5 days for respiratory disease and some interdigital infections. Some calf indications use 2 mg/kg once daily for 3 to 5 days. Intramammary products for lactating cows commonly contain 75 mg per syringe per affected quarter, often repeated at 12-hour intervals for three treatments, but exact label directions vary.

Because this is a food-animal antibiotic, do not estimate a dose on your own. Your vet must calculate the dose from accurate body weight, choose the correct formulation, and document the proper meat or milk withdrawal interval for the exact product being used in the country where you are located.

For U.S. pet parents and producers, the biggest practical point is availability: cefquinome is generally not a legal, routine U.S. cattle option. If your ox has a condition that might otherwise be treated with cefquinome elsewhere, your vet will need to choose a lawful alternative and build the treatment plan around the animal's age, production status, and diagnosis.

Most cattle tolerate cephalosporins reasonably well when they are used correctly, but side effects can still happen. Possible problems include injection-site swelling or soreness, mild digestive upset, and reduced appetite. With intramammary products, some cows may show local udder irritation or persistent abnormal milk for a short period after treatment.

As with other beta-lactam antibiotics, allergic or hypersensitivity reactions are possible. These may range from hives and facial swelling to breathing difficulty or collapse, although severe reactions are uncommon. See your vet immediately if your ox develops sudden swelling, severe weakness, trouble breathing, or rapidly worsening illness after a dose.

Another important safety issue is not a visible side effect at all: residue risk in meat or milk if the drug is used incorrectly. In food animals, wrong dose, wrong route, or wrong withdrawal timing can create serious legal and food-safety problems. That is one more reason cefquinome should only be used under direct veterinary supervision.

Cefquinome does not have a long list of dramatic day-to-day drug interactions, but your vet still needs a full medication history. Other antibiotics may affect how useful cefquinome is in a given case, especially if they are being combined without culture guidance. In general, your vet will be cautious about mixing antibiotics unless there is a clear reason.

As a beta-lactam antibiotic, cefquinome may be less effective if paired inappropriately with drugs that are primarily bacteriostatic rather than bactericidal. The practical takeaway is not to combine treatments from the barn cabinet on your own. Your vet should decide whether a single antibiotic, a switch in therapy, or supportive care makes the most sense.

Also tell your vet about any prior reactions to penicillins, cephalosporins, or other beta-lactam antibiotics. Cross-reactivity can occur. In food animals, interaction planning also includes withdrawal times, so every added drug matters from both a medical and regulatory standpoint.