Comportamento parasitológico de ovinos dos grupos genéticos Dorper e Santa Inês

Abstract

The present work aims to correlate the found values of EPG and Famacha and to evaluate the hematological parameters in sheep affected by gastrointestinal parasites. The experimente lasted from February to December 2014. Feces and blood samples were collected from 28 sheep of the Dorper and Santa Inês sheep, from the lamb and sheep categories aged 6 to 24 months, divided into four groups of seven animals each. Blood samples were collected directly from the jugular vein, using disposable needles and the stool samples collected were analyzed as number of eggs per gram of feces (EPG). For statistical analysis, the SAS program was used, from the procedure PROC GENMOD. The staining of the ocular mucosa was also observed according to the Famacha method. The mean of OPGlog and Famacha according to the evaluation period was also calculated, where there was a significant difference for OPGlog (P <0.05) identical to the hematocrit and total plasma protein (PPT) variables. The means found for each group were tabulated, and the higher the value found for OPG, which indicates a high degree of infection, the higher is the value found for Famacha, where very high values indicate high levels of helminth infection. The OPG log and Famacha variables showed correlation and this can be explained by the helminth species present in the animals, Haemonchus contortus. For the hematological data, the Santa Inês sheep, Santa Inês ewes and Dorper ewes were not influenced, however, when evaluating the values found for the Dorper ewe group, a greater pre-disposition of these ewes to infections by gastrointestinal nematodes and greater susceptibility of Themselves.