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Online Journal of Veterinary Research

(Including Medical and Laboratory Research)

Established 1994
ISSN 1328-925X


Volume 27 (2): 60-71, 2023.

Incidence of nasal myasis by Oestrus ovis in sheep and goats by age, gender, location and season.


Sardar Jafari Shoorijeh DVM PhD, Amin Tamadon DVM PhD, Shahram Negahban DVM,

Mohammad Amin Behzadi DVM, Saed Momenie Biglari (DVM)


Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Iran




Shoorijeh SJ, Tamadon A, Negahban S, Behzadi MA, Biglari SM., Effect of age, gender and season on incidence of nasal myasis by Oestrus ovis in sheep and goats, Onl J Vet Res., 27 (2): 60-71, 2023. Authors report Effect of age, gender and season on incidence of nasal myasis by Oestrus ovis in 2002 sheep and 1998 goats over 12 months in South Iran. We found 49.7% sheep and 13.1% goats infested over 12 months with 3.9 in spring, 5.3 in summer, 5.9 in autumn and 7.8% in winter with prevalence of 23.3% in spring to 80% in winter. In sheep 6.3% were infested of which 53.6% were 4-5 year olds with 39.6% male and 63.3% female. In goats 5.2% were infested with 3.2 in spring, 3.8 in summer, 4.6 in autumn and 6.8 in winter. Prevalence ranged from 6.6% in spring to 17.9% in winter. An increase in infestation was seen with an increase in the age of the observed goats. The results of this study clearly demonstrate that O. ovis is significantly higher in sheep than goats.


Keywords: Oestrus ovis; prevalence; sheep; goat; southern Iran.