Title: Atrophic Rhinitis in Pigs - Respiratory System - Merck Veterinary Manual
Headings: Atrophic Rhinitis in Pigs
Atrophic Rhinitis in Pigs
Atrophic rhinitis, pig
Etiology:
Clinical Findings:
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Control:
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Content: When atrophic rhinitis rises to an unacceptable level in a herd, control measures are usually strategic: chemoprophylaxis, vaccination, temporary closure of the herd to introduction of new pigs, and improved management (eg, better ventilation and hygiene, less dusty feed). Chemoprophylaxis usually includes administration of antibacterial drugs to all sows, particularly before farrowing, as well as programs of repeated medications for newborn piglets and sometimes for newly weaned pigs. Medication of weaner and grower rations, and sometimes sow rations, is often helpful. Drugs commonly used are ceftiofur, sulfonamides, tylosin, and tetracyclines. Bacterins against toxigenic P multocida and B bronchiseptica have been developed. Both toxoid vaccines and bacterin-toxoid mixtures are available against P multocida; although both give satisfactory results in most herds, infection can be best prevented with bacterin-toxoid mixtures. Typically, sows are vaccinated 4 and 2 wk before farrowing, and the young pigs at 1 and 4 wk of age. However, vaccination schedules recommended by the manufacturer should be followed.