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Natura Croatica Issue number: Natura Croatica, Vol. 17 No.4

Arthrogryposis multiplex congenita u muškog muflonskog janjeta (Ovis ammon musimon)

Authors: Peter Lazar, Jan Čurlík, Dean Konjević, Ruža Sabočanec

Authors and affiliation

  • Peter Lazar Department of Parasitology and Infectious Diseases, University of Veterinary Medicine, Košice, Slovak Republic
  • Jan Čurlík Department of Parasitology and Infectious Diseases, University of Veterinary Medicine, Košice, Slovak Republic
  • Dean Konjević Department for Game Biology, Pathology and Breeding, University of Zagreb Veterinary Faculty, Heinzelova 55, 10 000 Zagreb, Croatia
  • Ruža Sabočanec Department of General Pathology and Pathological Morphology, University of Zagreb Veterinary Faculty, Heinzelova 55, 10 000 Zagreb

Abstract

In March 2007 a few days old male mouflon (Ovis ammon musimon) lamb was found within an enclosure for fallow deer (Dama dama) and mouflon rearing, managed by the Rozhanovce Game Management Centre, Ko{ice University of Veterinary Medicine. Because of its severe limb malformations and consequent inability to stand up, the lamb was caught and euthanized. Following the euthanasia procedure the lamb was subjected to macroscopic and X-ray examination, necropsy and histopathological examination. Multiple alterations were observed and classified as arthrogryposis, kyphosis and deviation and reduced length of the left hind leg. Arthrogryposis is a term for constant contraction of joint/s found throughout the body at birth. It is generally associated with fetal akinesia due to different fetal abnormalities or maternal disorders. It can also be related to damage of the central nervous system (i.e. intrauterine infection with Akabane, bluetongue or some other viruses), ingestion of poisonous plants by the pregnant female, fetal inactivity or other anomalies such as scoliosis, torticollis or cleft palate. The combination of observed alterations along with nonspecific results of histopathology and the fact that this was a single case excludes an infectious agent as a cause of this condition.

Keywords

mouflon lamb, fetal abnormalities, arthrogryposis, kyphosis

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