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Survey of sarcocystis infection in slaughtered sheep in Kerman Abattoir, Kerman, Iran
Authors:Mohammad Mirzaei Dehaghi  Mohsen Fallahi  Masoud Sami  Mohammad Hosein Radfar
Affiliation:1. Department of Pathobiology, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
2. School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
3. Department of Food Hygiene, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
Abstract:Sarcocystosis caused by different Sarcocystis species and is a zoonotic protozoan infection with worldwide distribution in man and many animal species. In the present study, three techniques — direct inspection, impression smears and digestion method — were used for the diagnosis of Sarcocystis infection in 112 slaughtered sheep in a Kerman abattoir from November 2010 to May 2011. A total of 450 slaughtered sheep were selected randomly during three seasons, and their oesophagus and diaphragm were inspected using naked eye examination. In the second stage, 112 carcasses out of the 450 which had no apparent infection were selected randomly and their meat investigated using two techniques: impression smear with staining and pepsin digestion. The percentage of macroscopic cysts found in the oesophagus and diaphragm muscle was 6% and 2.88%, respectively, and microscopically, infection was found in 100% of the organs. There was no significant difference between different ages or between males and females. Although all of the sheep were found to be infected with Sarcocystis, majority of the cysts were demonstrated microscopically. This suggests that meat should be cooked sufficiently, since a macroscopic inspection may not provide true results.
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