Pharmacological dosage: 40 mg/kg florfenicol and 2,2 mg/kg l.w. flunixin. Practical dosage: It is 2 ml/15 kg l.w., and administered only by a single injection via subcutaneous route . It should be injected only in the neck. The volume of dosage to be injected in the neck should not exceed 10 ml. The site of injection should be cleaned before administration, and a dry and sterile needle and syringe should be used. To ensure correct dosage and avoid overdose or administration of insufficient dosage, the animal weighing should be as accurate as possible. It is recommended to administer treatment to animals in the early stages of the disease, and evaluate the response to treatment 48 hours after injection. It is recommended to evaluate the response to treatment 48 hours after the injection of flunixin, the anti-inflammatory component contained in the product. Flunixin, the anti-inflammatory component contained in the product, may mask the poor bacteriological response to florfenicol in the first 24 hours after injection of flunix. If the clinical symptoms of the respiratory disease persist or increase, or in case of recurrence, the treatment protocol should be changed, and a different antibiotic should be used until clinical symptoms disappear.