Prevalence estimation and genotypization of Toxoplasma gondii in goats

In this study we aimed to determine seroprevalence of antibodies against Toxoplasma gondii and parasite DNA presence in the milk of goats from a farm in eastern Slovakia. Anti-Toxoplasma antibodies were detected in 43 goat sera out of 87 examined (49.43%). The highest prevalence was recorded in the goats aged more than 72 months (76.19%; OR = 4.62; 95% CI = 1.51-14.14) and the lowest one in animals aged from 12 to 36 months (17.65%; OR = 0.09; 95% CI = 0.03-0.27). Statistically significant correlation (P < 0.0001) was found between the prevalence of antibodies against T. gondi and animal age in comparing age groups - goats up to 36 months of age and above 37 months of age. The presence of T. gondii DNA was confirmed in 32.56% of milk samples using molecular methods. Based on the DNA polymorphism at the SAG2 locus of T. gondii we identified the goats as being infected with genotype II of T. gondii. Presence of DNA in milk refers to the risk of human infection through consuming raw milk.