approximately two-thirds of the isolates were tested for their antimicrobial sensitivity patterns and the degree of sensitivity for p haemolytica a1 , the most frequently isolated serotype , was chloramphenicol ( 100 per cent ) , sulphamethoxazole trimethoprim ( 98 per cent ) , oxytetracycline ( 80 per cent ) , ampicillin ( 85 per cent ) , penicillin ( 82 per cent ) , streptomycin ( 3 per cent ) and lincomycin ( 1 per cent ) .
C1136254
antimicrobial
C0030092
oxytetracycline