Original Research

Prevalence, predilection sites and pathological findings of Taenia multiceps coenuri in slaughtered goats from south-east Iran

Reza Kheirandish, Masoud Sami, Shahrzad Azizi, Mohammad Mirzaei
Onderstepoort Journal of Veterinary Research | Vol 79, No 1 | a436 | DOI: https://doi.org/10.4102/ojvr.v79i1.436 | © 2012 Reza Kheirandish, Masoud Sami, Shahrzad Azizi, Mohammad Mirzaei | This work is licensed under CC Attribution-NoDerivatives 4.0
Submitted: 30 March 2012 | Published: 29 November 2012

About the author(s)

Reza Kheirandish, Department of Pathobiology, Shahid Bahonar University of Kerman, Iran, Islamic Republic of
Masoud Sami, Department of Food Hygiene and Public Health, Shahid Bahonar University of Kerman, Iran, Islamic Republic of
Shahrzad Azizi, Department of Pathobiology, Islamic Azad University, Shahrekord Branch, Iran, Islamic Republic of
Mohammad Mirzaei, Department of Pathobiology, Shahid Bahonar University of Kerman, Iran, Islamic Republic of


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Abstract

Coenurosis is a zoonotic disease in a variety of ruminants caused by the metacestode of Taenia multiceps. The coenuri in the brain and spinal cord of sheep and goats have been identified as Coenurus cerebralis whilst those reported in other tissues have been named Coenurus gaigeri. This study was conducted during the spring and summer of 2011. Out of 25 739 goats inspected in slaughterhouses, 23 carcasses (0.09%) revealed one or multiple visible swellings on the different muscles and visceral organs. The coenuri, of variable sizes, were found mainly in the muscles of the thigh, shoulder and neck, and were less common in the abdominal muscles and subcutaneous tissues. Coenuri were also found in the diaphragm, tongue, intercostal muscles, lung, parotid area and tunica adventitia of the aorta in a goat with severe infection. The brains of slaughtered goats that had coenuri in their skeletal muscles were examined and coenuri were found in two specimens (8.69%). The coenuri were located in the occipital lobe, the anterior part of the right cerebrum and the parietal lobe of the left cerebrum. Histopathologically, coenuri in the brain caused pressure atrophy and liquefactive necrosis in the surrounding tissues, hyperaemia, perivascular cuffing, neuronal degeneration, neuronophagia, satellitosis, diffuse microgliosis and astrocytosis. Coenuri in the skeletal muscles caused degenerative and necrotic changes, hyalinisation and myositis. In the lung, tissues around the coenurus revealed atelectasis and focal interstitial fibrosis. In the present study, concurrent occurrence of coenuri in the central nervous system and skeletal muscles supports the hypothesis that C. cerebralis and C. gaigeri are different names for the metacestodes of the same species of tapeworm.

Keywords

Coenurosis; goats; Iran Taenia multiceps

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Crossref Citations

1. Cerebral and non-cerebral coenurosis: on the genotypic and phenotypic diversity of Taenia multiceps
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