Surto de bócio em ovinos de propriedade rural da planície pantaneira

Abstract

Goiter is the term used for the non-inflammatory and non-neoplastic growth of the thyroid gland. The main pathogenic mechanisms for the development of thyroid hyperplasia include a diet low in iodine, which occurs worldwide. Due to its ease of recognition and correction, it is a controllable disease, however, if neglected, it can cause high mortality, especially in newborns. In this work, we report an outbreak of goiter on a property in Nossa Senhora do Livramento, in Mato Grosso - Brazil, a Pantanal plain region, which occurred in mixed breed sheep. The outbreak was characterized by a high rate of miscarriage and stillbirths. Upon inspection of the herd, some adult and young animals were found to have a low body score and varied osteodystrophic conditions (jaw asymmetry and bulging of the facial bones), in addition to an increase in visible and palpable volume of the thyroid gland, with goiter validation carried out by through complementary exams such as imaging diagnosis and histopathology.