study on parasitic infection of the domestic ruminants in golestan province

present research was for study on parasitic infections of domestic ruminants in golestan province. 234 samples of the gastrointestinal tracts contents, 260 livers, 180 lungs, 350 hearts and muscles, 300 abdominal cavities and 100 eyes for infection to helminthes, 800 blood samples for protozoa and external coats of 700 animals were examined for arthropoda. results showed that 19.74% of sheep gastrointestinal contents were infected to helminthes and 8 species of nematodes and one species of cestode were isolated. helminth infection in liver, lung and abdominal activity were 14.4%, 7.5% and 22.22% respectively. also infection to protozoa was 8.14% and to ectoparasites was 23.33%. 22.49% of goat gastrointestinal contents were infected to helminthes and 8 species of nematodes and three species of cestodes were isolated. helminth infection in liver, lung and abdominal activity were 16.6%, 7.5% and 37.5% respectively. also infection to protozoa was 2.96% and to ectoparasites was 22.22%. 10.4% of cattle gastrointestinal contents were infected to helminth parasites and one species of nematode and one species of trematoda were isolated. helminth infection in liver and lung were 6.5%, 4.16% respectively. also infection to protozoa was 10% and to ectoparasites was 43.33%. no helminth was isolated from heart and muscles in above-mentioned ruminants.