The current study conducted on 124 lung and nasal samples from slaughtered veals exclusively males aged less than 2 years slaughtered at Batna abattoirs. The bacteriological examinations indicated that 96.9% samples were positive for mixed bacterial infection, while 3.1% were found to be bacteriologically negative. The isolation rates of most frequently identified species among the 291 bacterial isolates include; E.coli (31.95%), Staphylococcus aureus (7.56%), Streptococcus bovis 1 (4.46%), Pseudomonas aeroginosa (4.46%) and Proteus spp (4.46%). Pasteurella strains were isolated from lungs tissues of 0.68%.The totality of these bacteria seems to be sensitive to different antibiotics used in this study. Our results confirm the importance of bovine respiratory disease in both intensive and traditional breeding. The consequences of these respiratory diseases are very heavy. This is why control measures based on prevention, early detection and effective treatment must be necessary in a modern breeding and must be strongly encouraged in traditional one.
bovine respiratory disease, veals, Pasteurella, isolation, drug sensitivity