Treatment of bacterial respiratory infections in lambs

Abstract

Objective of the present paper is to discuss treatment of bacterial respiratory infections in lambs. This should aim to control clinical signs, as well as to limit lesions in the lungs of the affected animals, and requires immediate action with mainly antimicrobial agents effective against the causal bacteria. In clinical practice, correct identification of affected lambs is important for administration of the appropriate treatment regime. Fluoroquinolones, tilmicosin, tulathromycin, chlortetracycline, doxycycline and oxytetracycline are effective against both Mannheimia haemolytica and Mycoplasma, which are the major causal agents of respiratory infections of lambs. Simultaneous administration of non-steroid anti-inflammatory drugs is also recommended. All lambs with clinical signs must undergo the full treatment schedule. The potential value of a metaphylactic treatment in clinically healthy lambs, within flocks with affected animals, should be assessed on a case-by-case basis. Treatment protocols of the disease should always include management changes in the flock to eliminate factors that contribute to development of the disease.