Indicated for the treatment of swine respiratory disease (SRD) associated with Actinobacillus pleuropneumoniae, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae, and for the control of SRD associated wIth Actinobacillus pleuropneumoniae, Pasteurella multocida and Mycoplasma hyopneumoniae in groups of pigs where SRD has been diagnosed