Frequency of Trichostrongylus species and other Trichostrongylidae in ruminants slaughtered in Hamadanslaughterhausein 2020

Objective: Zoonotic intestinal parasites are one of the health challenges in developing countries. Consideringthe possible role of digestive parasites in domestic animals in transmitting infection to humans, their differentprevalence and lack of knowledge about the status of ruminant infection in the country, this study wasconducted in 2020 to determine the frequency of Trichostrongylidae infection in the gastrointestinal tract ofslaughtered animals in Hamadan slaughterhouse.Materials and Methods: The research was descriptive and cross-sectional random. By referring to Hamedanslaughterhouse, 338 animals were killed. The abomasum and intestines of the animal were separated in theslaughterhouse and placed in a 10% formalin container, then transferred to the parasitology laboratory ofHamadan Medical School to diagnose the parasite. Information about livestock such as: sex, type of livestock,anatomical location and severity of infection were recorded in the information form and the data of theinformation form were classified and analyzed statistically.After opening and washing the contents of the limbs in a large plastic bucket, several times these contents werefiltered through a wire sieve and the obtained transparent material was gradually poured into plates andseparated with the help of a hand magnifying glass and a swab of worms and collected in a container. It wasmaintained with formalin and with the help of the instructor, the surface of the genus and species wereidentified using the relevant keys of the worms. Data were analyzed by descriptive statistics and the resultswere presented in the form of tables and graphs.Results: Out of 338 animals studied and tested, 70 were cows, 264 were sheep and 4 were goats. Of this threat,338 were 240 male and 98 female. 301 were young and 37 were old. No worm infection was observed in cattle,worm infection in sheep 21(6.20%), of which 14 were male. Male parasitic nematodes 54(41%) had cases andfemale parasitic nematodes 78(59%) had cases. Infection in the small intestine with 296(78.6%) parasiticnematodes.Conclusion: Strategy infection was highly prevalent in the studied animals. Due to the possible role of parasitesin the transmission of infection to humans, control and treatment measures should be taken. Further researchon pollution prevention and control methods is also recommended.

کلیدواژه ها:

Strategy ، Cattle ، Sheep ، Goats ، Hamadan Slaughterhouse