بررسی انگل‌های دستگاه گوارش گوسفندان نژاد بلوچی در منطقه سیستان و نقشه‌برداری از آن با استفاده از سیستم اطلاعات جغرافیایی

نوع مقاله: علمی پژوهشی

نویسندگان

1 دانش‌آموخته دکترای حرفه‌ای دامپزشکی، دانشکده دامپزشکی، دانشگاه زابل، زابل، ایران.

2 استادیار گروه تغذیه و اصلاح نژاد دام، دانشکده دامپزشکی، دانشگاه زابل، زابل، ایران.

3 دانشیار گروه پاتوبیولوژی، دانشکده دامپزشکی، دانشگاه زابل، زابل، ایران.

4 دانشجوی دکترای گروه نقشه‌برداری، دانشکده نقشه‌برداری، دانشگاه لاوال، کبک، کانادا.

5 استادیار گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه زابل، زابل، ایران.

چکیده

آلودگی به انگل‌ها می­تواند باعث کاهش وزن، کاهش تولید و حذف ارگان­ها در گوسفندان پرورشی ذبح­شده گردد. مطالعه اخیر به منظور بررسی وضعیت آلودگی‌های انگلی دستگاه گوارش در گوسفندان منطقه سیستان انجام گرفت. در مجموع از 395 گوسفند به‌صورت تصادفی نمونه مدفوع اخذ شد. مختصات محل نمونه­گیری به کمک دستگاه GPS (global positioning system) ثبت گردید. آزمایش مدفوع به­روش شناورسازی کلیتون-لین انجام گرفت. در این مطالعه تنها تخم‌های سستود از جنس مونیزیاو اووسیست‌های تک‌یاخته‌ای از جنس آیمریا در داخل مدفوع مشاهده شد. شیوع انگل مونیزیا 21 درصد (83 مورد) و شیوع انگل آیمریا 39 درصد (154 مورد) بود. در طی مطالعه حاضر هیچ‌گونه تخم نماتود و ترماتودی مشاهده نشد. آزمون مربع کای نشان داد که شیوع مونیزیا در فصول گرم و سرد سال تفاوت آماری معنی­داری ندارد، اما شیوع آیمریا در فصول گرم سال به­طور معنی­داری بیشتر از فصول سرد سال بود (008/0p=). نتایج مطالعه نشان داد که فون انگلی دستگاه گوارش گوسفندان در منطقه سیستان با اکثر مناطق دیگر ایران متفاوت است. دلیل این امر می‌تواند آب و هوای گرم و خشک منطقه سیستان باشد. به­علاوه بادهای 120 روزه، که حجم زیادی از خاک را در دشت سیستان جا‌به­جا ‌می‌کنند، باعث پراکنده شدن مدفوع گوسفندان در بیابان ‌می‌شود و این امر مانع تکمیل شدن سیر تکاملی انگل‌ها می‌گردد. 

کلیدواژه‌ها


عنوان مقاله [English]

A survey of gastrointestinal parasitic fauna of Baluchi sheep in Sistan region and its mapping using the Geographic Information System (GIS)

نویسندگان [English]

  • Bargozideh Toneii Omid 1
  • Dariush Saadati 2
  • Reza Nabavi 3
  • Milad Moradi 4
  • Mehdi Rasekh 5
1 D.V.M. Graduate, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran.
2 Assistant Professor, Department of Nutrition and Animal Breeding, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran.
3 Associate Professor, Department of Pathobiology, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran.
4 Ph.D. Student, Laval University, Quebec, Canada.
5 Assistant Professor, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran
چکیده [English]

Parasitic infestation of breeding sheep can cause weight loss, production loss and condemnation of edible organs at slaughter. This study was designed to evaluate gastrointestinal parasitic infections in sheep of Sistan region. Fecal samples from 395 sheep were collected randomly. Coordinates of the sampling locations were recorded using a GPS device. Fecal tests were conducted using the Clayton-Lane floatation method. In this study only cestode eggs of the genus Moniezia and protozoan oocysts of the genus Eimeria were found in the faeces. Prevalence of Moniezia was 21 percent (83 cases) and prevalence of Eimeria was 39 percent (154 cases). There was no nematode or trematode eggs in the selected fecal samples. Chi-square test showed that there was no significant difference between the prevalence of Moniezia in cold and warm seasons but the prevalence of Eimeria in the warm season was significantly greater than the cold season (p=0.008). The results showed that gastrointestinal parasitic fauna of sheep in Sistan region is different from other regions of the country. This may be due to hot and dry weather of Sistan. In addition, the 120 days' winds of Sistan displace a large volume of soil in this region that can cause scattering of sheep stool in the desert, preventing completion of the life cycle of parasites.

کلیدواژه‌ها [English]

  • Gastrointestinal parasites
  • Sheep
  • Sistan
  • Geographic Information System
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