Taenia saginata cysticercosis in cattle with special reference to its prevalence, pathogenesis and economic implications in Fars Province of Iran.
The study was carried out during a 3-year period. Of 9501 cattle examined, 736 (7.7%) were infected with cysticerci of Taenia saginata. The endemic foci were identified and prevalence was significantly higher (P < 0.005) in animals from Noorabad Mammasani (10.7%), Kenareh (10.0%) and Shiraz area (8.5%) than elsewhere. The prevalence was significantly higher (P < 0.005) during spring and autumn seasons. There was no variation in the infection rate in animals of different age groups, suggesting that immunity was acquired to super-infection. The most common sites were muscle of the shoulder (26.3%) and masseter (23.7%), tongue (24.9%) and heart (23.4%). Pharynx, oesophagus and diaphragm showed 0.9, 0.5 and 0.4% infection, respectively. The metacestode caused extensive damage resulting in infiltrative, degenerative changes, haemorrhages, necrosis and exudation mainly in the vicinity of cysts. The infection was the cause of condemnation of 34.6% of infected carcases. The rejected carcases and infected organs were valued at 100.1 million Rials over the 3-year period.
Oryan
A
A
Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Iran.
Moghaddar
N
N
Gaur
S N
SN
D000367:Age Factors; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000191:economics / Q000453:epidemiology* / Q000209:etiology; D003551:Cysticercosis / Q000453:epidemiology / Q000209:etiology / Q000662:veterinary*; D007492:Iran / Q000453:epidemiology; D009928:Organ Specificity; D012621:Seasons