Abstract
Objective:Sarcocystis spp. are common parasites and in terms of economics and pathogenicity in domestic animals is important. The purpose of this work was to define the rate of contamination of slaughtered carcasses of cattle to Sarcocystis using digestive and histopathological methods in southeast Iran.Material and Methods:In this descriptive laboratory study for 1 year, 500 carcasses were examined and isolated bradyzoites of Sarcocystis with the digest method. Also, tissue samples from the esophagus and diaphragm were considered for pathologic studies and stained with hematoxylin and eosin of sections of histopathological.Results:The results showed that the highest contaminations were in imported male animals aged 2–3 years old in the spring. There was a significant difference (p < 0.05) in the prevalence rate with the sex and race of cattle but no significant difference (p > 0.05) in the prevalence rate with age and season.Conclusion:Infection with Sarcocystis is common in oxen in this region. The imported cattle are more infected. It seems that racing and the environmental condition affect the prevalence of Sarcocystosis.
Highlights
The genus Sarcocystis has the most prevalent and it is an obligatory two-host parasite
The imported cattle are more infected. It seems that racing and the environmental condition affect the prevalence of Sarcocystosis
Clinical sarcocystosis is relatively rare in cattle [5]
Summary
The genus Sarcocystis has the most prevalent and it is an obligatory two-host parasite. Clinical signs usually include weight loss, abortions, reduced milk production, and death in cattle [4,6]. These symptoms occur during the development of second-generation intravascular meronts [4]. To identify different species of Sarcocystis cysts (sarcocysts) in different animals, ultrastructural studies are performed on the cyst wall of this parasite [9] Sarcocysts infections are common in cattle around the world [5]. The six species of Sarcocystis reported in the cow include S. cruzi, S. hirsuta, S. rommeli, S. heydorni, S. hominis, and S. bovifelis [5,10]. The prevalence of Sarcocystis species in young cattle muscle in most parts of the world is about 100% [5,8]. The definitive identification of Sarcocystis at the surface of the species requires an electron microscope or molecular detection method [5,12]
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