RESULTS	Success rates for the high-dosage ceftiofur ( 94/129 ; 73 % ) and oxytetracycline ( 87/128 ; 68 % ) groups were significantly higher than that for the low-dosage ceftiofur group ( 5/50 ; 10 % ) , but there were no significant differences between the high-dosage ceftiofur and oxytetracycline groups .\