Diagnosis of Abortion and Measures to Control Neosporosis in Cattle

Abstract

These scientific and methodological recommendations were developed based on the results of a dissertation study and the authors’ own research, as well as published research materials on this topic. These scientific and methodological recommendations are intended for practicing veterinarians, specialists at regional, district, and interdistrict state laboratories of the State Service of Ukraine for Food Safety and Consumer Protection, specialists from advisory services, students in postgraduate programs, researchers, faculty members, and students pursuing a degree in the specialty 211 “Veterinary Medicine.” These scientific and methodological recommendations outline a comprehensive approach to the diagnosis and prevention of abortion in cattle caused by the protozoan parasite Neospora caninum. Guidelines are provided for the collection and packaging of pathological material. Special attention is given to methods for determining the age of the aborted fetus. Pathological and histopathological changes in the organs and tissues of fetuses and fetal portions of the placenta in cattle are described in detail. The role of serological testing of the herd and newborn calves as a key screening tool is highlighted. Diagnostic criteria for abortion caused by N. caninum are formulated, and potential risks arising during the diagnosis of abortion are outlined. A strategy for the control and prevention of neosporosis on the farm is proposed.