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Zoonotic Gastrointestinal Nematodes (Trichostrongylidae) from Sheep and Goat in Isfahan, Iran [research project]/ Nader Pestechian; Hosein-Ali Yousei, Hamed Kalani, Roghiyeh Faridnia
Isfahan, Isfahan University of Medical Sciences, Vice Chancellery for Research: 2014
5 p: tab.
Project ID: 78040
عنوان به فارسی: مطالعه انگل های کرمی زئونوز دستگاه گوارش نشخوارکنندگان اهلی منطقه اصفهان
Summary or Abstract
BackgroundThe most important genera of trichostrongylid nematodes that live in digestive tract of ruminants includeTeladorsagia,Haemonchus,Trichostrongylus,CooperiaandMarshallagia. Out of the above-mentioned genera, four infecthumans includingTeladorsagia,Haemonchus,TrichostrongylusandMarshallagia. These parasites are an important part ofruminant pathogens, and some are extremely pathogenic and deadly, and thus vitally important from veterinary viewpoint.Hence, this study was performed to determine the latest status of zoonotic gastrointestinal trichostrongylid nematodes insheep and goat, in Isfahan province, center of Iran.Materials, Methods & Results:The intestines and abomasums of 109 small domestic ruminants (56 sheep and 53 goats)which were slaughtered at Isfahan slaughterhouses were collected and placed separately in large containers to be trans-ferred to the laboratory. To investigate morphological characteristics, the found nematodes were placed on glass slidesappropriately, dyed by lactophenol and azocarmine as a temporary mount. Finally, their genus and species were identiï¬edaccording to morphological characteristics using valid taxonomic keys. Seven species of trichostrongylid nematodes be-longed to four genera were isolated from intestines and abomasums of sheep and goats. The found species wereTricho-strongylus vitrinus,T. probulurus,T. colubriformis,Teladorsagia occidentalis,T. circumcincta,Marshallagia marshalliandHaemonchus contortus. The dominant species in the intestines of sheep and goats wasT. vitrinuswith the frequencyof 26.8% and 18.9%, respectively. In the abomasums of sheep, the dominant species wasM. marshalliwith the frequencyof 57.1%, and that in goats was the speciesT. circumcinctawith the frequency of 47.2%.Discussion:Livestock has undeniable role in the human life cycle and ecosystem balance. At times, coexistence of humansalongside livestock over the years has been accompanied by undesirable consequences like zoonotic diseases. Accordingto the results of this study, infection of livestock with trichostrongylid nematodes is well established in Isfahan region.In this study, seven species of trichostrongylid nematodes were found in animals under study. Among those,T. vitrinus,T. colubriformis,T. probulurus,M. marshalliandH. contortusare zoonoses and therefore their control and preventionhave been always a main problem in hyperendemic and endemic areas. Unfortunately, no study has been performed onhuman in any regions of Iran in recent years regarding prevalence of zoonotic gastrointestinal helminthes such as tricho-strongylid nematodes. Hence, trichostrongylid nematodes in human in the area, if any, can be considered as neglectedparasites. Moreover, some of the found parasites, namelyT. colubriformis,T. circumcincta,H. contortus, are resistant toseveral medications. Given that these parasites have a direct life cycle, thus, lack of hygiene in farms where animals arekept leads to increased infection. To reduce infection, protect livestock, and increase production in endemic areas, it isrecommended that drug resistance in the found species should be evaluated and livestock should be periodically treatedwith anthelmintic medications. Additionally, because of zoonotic nature of some species of the parasites, measures mustbe taken to protect the health of people who are directly engaged with these animals.Keywords:zoonoses, Trichostrongylidae, sheep, goat, Isfahan, Iran.
Yousei, Hosein Ali , Cllaborator
Kalani, Hamed , Cllaborator
Faridnia, Roghiyeh, Cllaborator
IRIsfahan University of Medical Science
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Zoonotic Gastrointestinal Nematodes (Trichostrongylidae) ...
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