PATHOMORPHOLOGICAL CHANGES IN EQUINE PARASCARIOSIS

Abstract

Equine parascariosis, caused by Parascaris equorum, is one of the most common and highly pathogenic parasitic diseases affecting young horses worldwide. This article presents a comprehensive review of the pathomorphological changes associated with the disease. Particular emphasis is placed on the macroscopic and microscopic lesions observed in the liver and lungs during the hepatotracheal migration of parasite larvae, as well as pathological alterations in the small intestine caused by adult worms. The characteristic clinical manifestations of the disease, the increasing problem of anthelmintic resistance, and currently recommended treatment protocols are discussed. Furthermore, integrated preventive measures, including strategic deworming, stable hygiene, and pasture management, are described as essential components for the effective control of equine parascariosis.