bursa (16.8%) in the present study is along with the results of the study by Razavi and Seifi ( 2006). The variation in the prevalence of western and eastern areas may be due to climatic factors, since the western areas are more forest regions and the annual rainfall averages more than the eastern areas. annulatus in Giluan province near regions to the western area of Mazandaran province. ( 2007) reported the highest prevalence of B. This finding is in agreement with the observation made by Razavi and Seifi ( 2006). ![]() annulatus was observed in the western area of Mazandaran province. In the present study, the highest prevalence of B. Official estimates for the year 2002 listed 2,106,300 sheep, 232,700 goats, 7,500 buffaloes, 21,800 horses, and 886,800 cattle, the latter including 69.7% of the domestic race (a special breed typical of Mazandaran), 25.2% mixed breeds, and 5% Holstein (Iranian Veterinary Organization, unpublished data). ![]() Permanent open pastures and forests are used independently by owners to feed their animals. Once the rice is harvested, many of the fields are used for raising sheep, cattle, and buffaloes. A considerable area of this province is used for rice culture. For its abundant superficial water resources, it is favorable for agriculture and animal husbandry. The province also enjoys a quasi-Mediterranean climate, and the annual rainfall averages 650 mm in the eastern part of Mazandaran province and more than 1,300 mm in the western part. The province enjoys a moderate, semitropical climate with an average temperature of 25℃ in summer and about 8℃ in winter. Mazandaran province is with an area of about 460,456 km 2, at the proximity of the Caspian Sea on the north and Alborz Mountain on the south ( Fig. In addition, special attention was given to the effect of climate condition on the distribution of different tick species in eastern and western areas of this Province. The aim of this study is to determine the frequency of tick infestation in cattle of Mazandaran province, Iran. ![]() However, so far, only a few studies were done about the tick fauna in different hosts in Iran ( Abbasian, 1961 Mazlum, 1971 Rahbari, 1995 Razavi and Seifi, 2006 Nabian et al., 2007), and little information is available about the frequency of ixodid tick species in cattle in Mazandaran province. Many of cattle graze in the pastures and forests, and the probability for them to be exposed to tick infestation is increasing. Among the provinces of Iran, Mazandaran province has a special climate, with its abundant superficial water resources, which it is favorable to agriculture and animal husbandry. It is important to know the prevalence of the tick species involved on the transmission as well as their geographical distribution for the control of tick and tick-borne diseases (TBDs). Ticks are also one of the major vectors of pathogens, such as Babesia, Theileria, and Anaplasma spp., to animals in the world ( Soulsby, 1982 Morel, 1989). Once they attach to a host for a blood meal, they can cause skin irritation and anemia. Ticks are hematophagous arthropods belonging to the Class Arachnids.
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