11/8/2023 0 Comments Gid in sheep![]() ![]() These clinical signs are caused by an acute inflammatory response than by mechanical action of the cyst. In acute outbreaks, neurological signs of coenurosis rise with various degrees of muscle tremors, excitability, ataxia, blindness, and nystagmus, which in the majority of cases result in the death of the animal, due to starvation after several days (Abera and Wubit, 2016). The leptomeninges, brain parenchyma, and ventricles are the preferred sites of cysts. The cysts contain clear and watery fluid with hundred of white nodules on its inner surface, measuring a few millimeters in diameter (Varcasia et al., 2013). ![]() As a consequence, localized, space-occupying lesions by thin, translucent, and large uni- or multilocular cysts are produced in the central nervous system (CNS Oryan et al., 2014). Coenurosis is present worldwide, mainly in sheep-farming regions of the world causing a disease known as gid (Sturdy), as the infected sheep shows ataxia and circles around its position. Sheep is the usual animal intermediate host, whereas it also has numerous other definitive and intermediate hosts and, occasionally, humans. multiceps and the adult worm inhabits the small intestine of dogs and some other carnivores (Mahadevan et al., 2011). cerebralis) is the metacestode or larval form of the dog tapeworm T. Keywords : Taenia multiceps, Coenurosis, Sheep, Outbreak, Cerebrospinal fluidĬoenurosis is an infectious parasitic disease occurred by the invasion of the brain and spinal cord with Taenia multiceps larvae. Taenia multiceps؛ Coenurosis؛ Sheep؛ Outbreak؛ Cerebrospinal fluid Thus, regular chemical-prophylactic protocols of dogs and correct disposal of the infected brain upon slaughtering or death of animals to prevent scavenging by dogs can control it. This study, as the first report of the epidemic incidence of cerebral coenurosis in sheep from Urmia, Iran, implies a failure of prevention and control measures against a parasitic disease. Dissection of the brain revealed ventricular deformity Coenurus cerebralis with white protoscolices causing the obstruction of the ducts and thus resulting in internal hydrocephalus and lateral ventricles enlargement. Neutrophils were also occasionally observed. The CSF examination showed a mixed population of mononuclear cells with a predominance of small lymphocytes and reduced number of monocytes. The cerebrospinal fluid (CSF) samples were obtained from the lumbosacral region and were examined grossly and microscopically. ![]() Physical and ophthalmoscopic examinations were performed. Affected animals were 5-8 months years-old from the mixed breed and both sex. In spring 2020, several animals were referred from different flocks (10 sheep herds) to the Clinic of Faculty of Veterinary Medicine, Urmia University, Iran with a history of acute neurological dysfunctions associated with increased mortality. Ghader Jalilzadeh-amin 1؛ Aliasghar Tehrani 2؛ Yaser Nozohour 1؛ Aamir Farjamimoghadam 3ġDepartment of Internal Medicine and Clinical Pathology, Faculty of Veterinary Medicine, Urmia University, Urmia, IranĢDepartment of Pathology, Faculty of Veterinary Medicine, University of Urmia, Urmia, IranģFaculty of Veterinary Medicine, Urmia University, Urmia, IranĬoenurosis is a neurological parasitic infection of sheep caused by the larval stage of Taenia multiceps. All rights reserved.First report of epidemic prevalence of cerebral coenurosis in ten sheep herds in Iran ![]() Despite that, many farmers may choose to slaughter those sheep fit for marketing for economic reasons and euthanise those in poor condition.Ĭopyright © 2012 Elsevier B.V. Treatment is based on surgical removal of the coenurus cyst after general anaesthesia of the animal the approach has a very good success rate, especially after accurate localisation of the lesion. In all cases, it is essential to carefully examine the animal and not simply rely on results of ancillary tests (mainly of cerebrospinal fluid examination), as disorders other than coenurosis can be responsible for changes in the results of these tests. Listeriosis, louping-ill, sarcocystosis and polioencephalomalacia and brain abscessation should be considered when formulating a diagnosis of acute coenurosis. In 80-90% of cases, the cyst is located in one cerebral hemisphere, whilst in 5-10% of cases, it is localised in the cerebellum rarely it involves two sites in the brain of the affected animal. Coenurosis is a disease of the central nervous system in sheep, caused by Coenurus cerebralis, the larval stage of Taenia multiceps, a tapeworm, which infests the small intestine of carnivores. ![]()
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