Oestrus ovis in sheep: relative third-instar populations, risks of infection and parasitic control

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Oestrus ovis in sheep: relative third-instar populations, risks of infection and parasitic control.

Oestrus ovis (L.) (Diptera: Oestridae), the nasal bot fly, has a relatively short free-living life cycle outside of the host, and therefore it is necessary to know when the parasitic period occurs in order to prevent the clinical signs and economic losses caused by this parasite. The length of this parasitic portion of the life cycle is quite variable: a few weeks to several months depending on...

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Epidemiology of sheep infection by Oestrus ovis in Algeria.

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Immunisation of lambs with excretory secretory products of Oestrus ovis third instar larvae and subsequent experimental challenge.

Excretory-secretory products (ESP) of myiasis producing agents are involved in nutrition and development of larvae and are often immunogens. This study was carried out in order to define the antigenicity, the immunogenicity of Oestrus ovis ESP and the role of sheep immune response to ESP. Twenty-four six to eight month old female lambs were randomly allocated into two groups. The first one was ...

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Oestrus ovis infection of grazing sheep during summer in southern Chile1

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Oestrus Ovis is a common sheep parasite in the Mediterranean region. This study was carried out in the Ebro River Valley near Zaragoza (northeast Spain) using tracer animals to describe the seasons when infestation is more likely. Based on that information and an analysis of the evolution of the parasite within the host, we suggest the most appropriate time for treatment. Adult instars appeared...

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ژورنال

عنوان ژورنال: Veterinary Research

سال: 2001

ISSN: 0928-4249,1297-9716

DOI: 10.1051/vetres:2001144