Volume: 52 Issue: 1
Year: 2021, Page: 102-104, Doi: https://doi.org/10.51966/jvas.2021.52.1.102-104
Received: Nov. 7, 2020 Accepted: Nov. 30, 2020 Published: Jan. 1, 2021
Oestrosis, caused by the larvae of Oestrus ovis, is an obligatory myiasis of sheep and goats. It is commonly known as sheep nasal bot. The present study reports the infestation of the nasal cavity of sheep by Oestrus ovis larvae in Nagpur. Sheep showing symptoms ranging from dyspnea, mild nasal discharge, and torticollis was brought to the Department of Veterinary Pathology, Nagpur Veterinary College, for postmortem examination. Grossly sinusitis, catarrhal discharge, purulent exudate, and congestion was observed. Microscopically, the cerebral cortex of infected animals revealed degeneration of neuron and softening of brain substance. Characteristic lesions included engorgement of blood vessels and vacuolation of brain substance with mild perivascular cuffing by mononuclear cells was seen. Nasal mucosa showed discontinuation of epithelial cells with mononuclear cell infiltration and edema and fibrosis. Based on parasitological and histopathological analysis, the case was confirmed to be of nasal myiasis.
Keywords: Oestrus ovis, Histopathology, Nasal bot
Cobbett NG, Mitchell WC. 1941. Further Observations on the Lifecycle and Incidence of the Sheep Bot, Oestrus ovis, in New Mexico and Texas. Am J Vet Res. 2:358–366.
Dorchies P. and Alzieu J.P.L. 1947. Oestrose ovine: Revue. Revue de Medicine Veterinaire.148: 565-574.
Dorchies P., Duranton C. and Jacquiet P. 1998. Pathophysiology of Oestrus ovis Infection in Sheep and Goats: A Review. Veterinary Record. 142: 487-489.
Fathy F.M., El-Barghathi A., El-Ahwal, A. and El-Bagar S. 2006. Study on Human Opthalmo-Myiasis Externa Caused by Oestrus ovis Larva in Sirte-Libya: Parasite features, Clinical Presentation and Management. Journal of Egyptian society of parasitology. 36: 265-282.
Godara R., Sharma R.L. and Sharma C.S. 2009. Aberrant Infestation of Goat Mandibles with Oestrus ovis Larvae. Tropical Animal Health and Production. 42: 137-139.
Luna, L.G. 1968. Manual of Histologic Staining Methods of the Armed Forces Institute of Pathology (3 rd ed.). McGraw-Hill, New York. pp. 4–8.
Maxie G. 2015. In Jubb, Kennedy & Palmerʼs pathology of domestic animals-Ebook, vol. 2., 5 Ed., Elsevier Health Sciences, Philadelphia.
Pampiglione S., Giannetto S. and Virga A. 1997. Persistence of Human Myiasis by Oestrus ovis L (Diptera: Oestridae) among Shepherds of the Etnean Area (Sicily) for over 150 years. Parasitologia. 39: 415-418.
Sharma N., Nayakwadi S., Pawaiya R.S., Kumar S., Tailie W.A., Paul S., Mishra A.K., Gururaj K., Kumar, A.Gupta, V.K. and Chaturvedi V. 2014. Parasitic Encephalomyelitis in Goats due to Aberrant Infestation with Botfly Oestrus ovis larvae. Advances in Animal and Veterinary Sciences. 2: 8-11.
Sucilathangam G, Meenakshisundram A, Hariramasubramanian S,Anandhi D, Palaniappan N, Anna T. 2013. External Opthalmomyiasis which was caused by Sheep Bot Fly (Oestrus ovis) larva: A Report of 10 Cases. J Clin Diagn Res. 7(3):539–542.
© 2021 Mayuri et al. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Chelkar, M., Panda, S., Pandiyan, A. 2021. Oestrus ovis larvae in nasal cavity of sheep: A case report. J. Vet. Anim. Sci.52(1): 102-104.
DOI: https://doi.org/10.51966/jvas.2021.52.1.102-104