Abstract
Throughout four successive seasons (winter, spring, summer and autumn), one hundred and ninety five camels (Camelus dromedarius) from slaughtered houses in different regions at Assiut governorate were examined for protozoa parasites in blood and muscles. These parasites were Trypanosoma evansi, Trypanosoma type 1. (n.sp.) Babesia sp, Theileria cameli in blood and Sarcosystis sp. in muscles. The prevalence of infection for the different parasites in both blood and muscles was also studied through the different seasons. Generally Sarcosystis sp. was represented the highest incidence of infection (55.38%) in the present study especially in spring (81.08%). The lowest incidence of infection was represented in Trypanosoma evansi (2.5%). At the same time the lowest incidence through different seasons was represented in Theileria cameli and Trypanosoma evansi (4.83%) in autumn.
Highlights
Many reports on Sarcocystis sp. infections among different vertebrates including even man were recorded [1,2,3,4,5,6,7].Many tick species, known to be vectors of diseases of man and his livestock, were found to infest camels, cattle, sheep and goats in different Kingdom Regions of Saudia Arabia [8]
Prevalence & seasonal variation Survey and incidence of protozoan parasites in camels: One hundred and ninety eight Camelus dromedarius examined throughout four different seasons (From May 2011–25 October 2012)
Blood parasites Trypanosoma evansi 5 (2.5%) [Figures (3 and 4)] Trypanosoma type 1(n. sp.) 19 (9.7%) [Figures (5 and 6)] Babesia sp. 51 (26.1%) [Figures (7 and 8)] Theileria cameli 12 (6.1%) [Figures (9 and 10)] Generally Sarcosystis sp. was represented the highest incidence of infection (55.38%) in the present study especially in spring (81.08%)
Summary
Infections among different vertebrates including even man were recorded [1,2,3,4,5,6,7]. Known to be vectors of diseases of man and his livestock, were found to infest camels, cattle, sheep and goats in different Kingdom Regions of Saudia Arabia [8]. Trypanosma evansi is the causative agent of surra, one of the most common and widespread of the trypansomal diseases. Surra is endemic in many parts of Africa, Asia, and South America where thousands of animals die during disease outbreaks each year. Not usually considered of zoonotic concern, one case of human infection with T. evansi recently has been documented in India [9]
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