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IJAVMS. 2010; 4(3): 67-74

Epidemiological studies on Bovine Theileriosis in Upper Egypt

Ahmed Abdel-Rady, Laila S. Ahmed, Amr Mohamed and Amira Al-Hosary.

Cited by (1)

During the period from April 2008 to July 2009 the present study was conducted on 150 cattle and 35 buffalo. These animals belonged to farms and villages of EL-wady EL-geded, Assiut, ELfayoum, EL- minia and Sohage Governorates. The clinical examination of the animals during this study concluded that there were different degrees of tick infestation and some common clinical signs recorded on the infected animals from both species, such as enlargement of the superficial lymph nodes, fever, various degrees of respiratory affection and ocular lesions as lacrimation or corneal opacity. In addition to other clinical signs which were less common like nervous manifestations, hemoglobin urea in some cases and bloody to tarry like diarrhea.
The results of the current study concluded that the conventional method of diagnosis such as (blood films and lymph smears) was still recommended for day to day examination in clinically infected cases, especially in acute stage. It gave 25.3% and 8.6% in blood films of cattle and buffaloes, respectively if compared to lymph smear which record 55.8% and 15.4% in cattle and buffaloes respectively. The infection rate among clinically examined cases were higher in ELWady EL-Geded governorate (13%). followed by Assiut governorate (12.7%), EL-fayoum governorate (8.6%), EL- Minia governorate (3.8%) and finally, Sohage governorate (2.7%). Cattle were more susceptible than buffaloes which usually act as carriers of the infection. Within cattle breeds, Frisian were more sensitive and susceptible than native breed, they gave infection rates 47.9%, 44.6% respectively in cattle and 14.3% in buffaloes. The animals below one year old were more susceptible to infection in both species, if compared with the older animals. The infection rates 24% in cattle and 8.56% in buffaloes. The male animals in both species were more susceptible to the disease than female animals {male cattle (26.67%), male buffaloes (11.42%), female cattle (20%) and female buffaloes (2.86%)}. The infection rate with tropical theileriosis is more common during spring months in both cattle and buffaloes with infection rates 21.3% and 8.6% respectively, while the lowest infection rates were recorded during autumn months when cattle showed 4.7%while buffaloes give 0%.

Key words: Cattle – Buffaloes – Theileriosis –Egypt – Conventional diagnosis

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