Prevalência e fatores de risco de helmintos gastrintestinais em ovinos da região do vale do rio itaim, semiárido piauiense

Abstract

The Northeast region of Brazil stands out in sheep and goat production, with significant economic and social relevance. However, sheep and goat farming in the semi-arid region faces challenges due to mortality and reduced productivity caused by gastrointestinal helminths. This study aimed to determine the prevalence and risk factors associated with gastrointestinal helminthiasis in small ruminant herds in the municipality of Paulistana/PI. A total of 260 sheep from 13 rural properties were evaluated, with data collected on animal characteristics and management practices. The overall prevalence observed was 93.5%, with all flocks showing positive animals. No statistically significant association was found between prevalence and factors such as sex, age, animal category, or breed pattern. However, crossbred animals (Berganês × Santa Inês) showed a higher mean OPG. Significant but weak correlations were observed between OPG, ECC, and Famacha®. Animal density per hectare had a direct influence on parasite load, being higher in farms with overstocking.. Statistical analysis revealed that properties with higher animal density per hectare had higher average eggs per gram (OPG). It is concluded that helminthiasis is a widespread issue, with significant implications for herd health and productivity. The adoption of integrated control strategies and the training of producers are essential to improve sanitary management and mitigate the effects of anthelmintic resistance.