[Pathomorphological changes in experimental nematodiriasis of lambs].

Pathomorphological studies on three lamb groups experimentally invaded by 5000, 10 000 and 30 000 capable of invasion N. spathiger larvae were performed. The macro- and microscopic changes of the inner parenchymal organs observed at the 18th and 60th day post invasion are described. It was established that morphological changes due to experimental nematodirosis depend both on the number of N. sathiger larvae swallowed and on the duration of their sojourn in the host organism. Lighter invasion caused slight to moderate changes mainly in the small intestines, while heavier invasion led to similar changes in some parenchymal organs (liver, spleen and kidneys) also.