![]() ![]() ![]() In clinical examination, clinical signs such as sneezing, serosanguinous nasal discharge ( Figure 1), hyperemic nasal mucosa, depression ( Figure 2), circling, head pressing, aimless wandering, compulsive walking, blindness, and ataxia were observed. In the present report, a high mortality rate due to false gid in a sheep herd was described.įollowing the complaint of an animal husbandman about high mortality rate (10%) in a sheep herd, the herd was clinically, hematologically, and pathologically examined exactly. Rarely a bot will migrate into the sheep brain (false gid). Clinical respiratory signs such as seromucous or purulent nasal discharge, frequent sneezing, and dyspnea may severely impair the health of affected animals. Clinical symptoms, depending on the infected area and larvae numbers, are different. The duration of this parasitic portion of the life cycle varies considerably from a few weeks to several months, depending on the season and climatic conditions. Larvae migrate to the frontal sinuses and complete two molts before returning to the nasal passages, from where they are expelled by sneezing. Adult flies deposit larvae in or near the sheep's nostrils and the first instars move into the nasal passages where they feed on nasal secretion. The disease has a higher prevalence in tropical areas. The sheep nasal bot, Oestrus ovis (Diptera: Oestridae), is a cosmopolitan parasite commonly found in sheep and occasionally goats. ![]()
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