Risk assessment on seropositive cattle and buffalo for Trypanosoma evansi with parasitic diseases and pasteurellosis

摘要

A total of 352 animals (cattle - 182; buffalo - 170) from Kabacan, Matalam and Ma-a abattoir slaughterhouses in Davao city were used in this study. Approximately 6 mL was collected for serological examination using Card Agglutination Test for Trypanosoma evansi (CATT/T evansi). A wet mount examination was performed to detect the presence T evansi in the blood. Fecal samples were collected to determine the presence of liver fluke, roundworms, giardia, cryposporidia and coccidian. Nasopharyngeal swabscollected from the animals slaughtered at the Ma-a abattoir was used in an attempt to isolate Pasteurella multocida. Overall result showed the prevalence of surra in animals raised in kabacan was higher (20%) compared to Matalam (13%). Risk assessment analysis revealed that a surra positive buffalo was six times more likely to be infected with P multocida than surra negative buffalo. The surra positive buffaloes were two times more likely to be infected with roundworms and liverfluke than surra negativebuffaloes. Interestingly, surra positive buffaloes were more susceptible to pasteurellosis and parasitic infection.than surra positive cattle. The calculated risk for age on the seropositivity indicated that catfle ages up to two-year old are three times more likely to get infected with T evansi. On the contrary, the age of buffaloes did not influence seropositivity. All animals examined were positive with coccidian however; both giardia and cryptosporidia were not detected.