In this study, cattle were infected artificially with T.sergenti and then Belenil retarder and the Butalex retarder combined with Dexycline were taken respectively to inject into the deep part muscles to cure the infected cattle. After artificial infection, infection rates of red blood cells in treated groups were increasing gradually, the highest value was 1.5 %, and the PCV was falling off, the RBC was decreasing obviously. After 42 days of injecting retarder treatment, the lowest infection rates of red blood cells in group Belenil was 1.5 %, and group Butalex was zero, the blood index was improving obviously, and the PCV was rising gradually, but, after 42 days of treatment, the PCV showed downtrend. The highest RBC with Butalex treatment was 7.55×1012/L, and the highest RBC with Belenil treatment was 6.37×1012/L. With artificial infection, there was no typical continued fever, the highest body temperature was 40.5 ℃。The results showed that the Butalex retarder was better than the Belenil retarder on the therapeutic efficacy to the T.sergenti infected cattle.

To find out the distribution and susceptivity to medicine of bacteria from the bile in bears which were gotten by living organism drainage,the test of selection and identification of bacterium,susceptivity to medicine were done with six asepsis samples from some bear farms in Yanbian State.Twelve bacteria from the samples,among which were six E.coli,three SA,two P.aeruginosa and one Salmonella.According to the susceptivity test,the Escherichia was highly sensitive to Cefotaxime,Chloramphenicoll and Cefazolin;P.aeruginosa was sensitive to Gentamicin;Salmonella was sensitive to Norfloxacin and Ofloxzcin;SA was sensitive to Ampicillin/Sulbactam,Cefazolin,Piperacillin,Erythromycin,Cefoperazone,Cefalexin and Ampicillin.