Oestrosis: Parasitism by Oestrus ovis

Lamelas, María Teresa; Ruíz, Héctor; Ferrer, Luís Miguel; Ramo, M.; Jiménez, C.; Figueras, L.

doi:10.1016/j.smallrumres.2019.04.017

Cited by 11 publications

(12 citation statements)

References 60 publications

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“…The larvae produce a chronic inflammatory rhinitis, with serous, mucus, purulent or even haemorrhagic discharge from the noses. These secretions are linked to the stage of the larvae and also with the weather, because larvae stop their activity in some weather conditions (winter) and so do the secretions (Alcaide et al, 2003;Ferrer et al, 2002;Gracia et al, 2018). The prevalence of this illness is close to 85% in some Mediterranean countries.…”

Section: 13oestrosismentioning

confidence: 99%

Diagnostic imaging techniques of the respiratory tract of sheep

Castells¹,

Lacasta

Climent

et al. 2019

Small Ruminant Research

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Diagnostic imaging techniques are very useful non-invasive methods to obtain medical images for the diagnosis of respiratory diseases in sheep. The use of ultrasound and thermographic cameras must be enhanced at farm level with the objective of assisting in the diagnosis of major respiratory diseases present in sheep farms. X-ray and, particularly, computed tomography are very interesting tools to facilitate the understanding of the main pathological processes in sheep, especially at the respiratory level. This article shows more than 40 images of thermograms, X-ray, ultrasonography and computed tomography of the most significant respiratory diseases in sheep.

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Section: 13oestrosismentioning

confidence: 99%

Diagnostic imaging techniques of the respiratory tract of sheep

Castells¹,

Lacasta

Climent

et al. 2019

Small Ruminant Research

Self Cite

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“…Oestrosis is a worldwide cavitary myiasis caused by the larvae of the fly Oestrus ovis (Linnaeus 1761, Diptera, Oestridae) that develops from the first-to the thirdstage larvae, which are obligate parasites of the nasal and sinus cavities of sheep and goats [14,15]. In areas with semiarid climatic conditions, as in the Mediterranean countries, oestrosis is the most important upper respiratory tract disease from a clinical and economic point of view [16].…”

Section: Oestrosismentioning

confidence: 99%

“…In areas with semiarid climatic conditions, as in the Mediterranean countries, oestrosis is the most important upper respiratory tract disease from a clinical and economic point of view [16]. Oestrosis is a collective disease with a high prevalence in which clinical signs have a seasonal variation, being more severe during hot and dry periods [15,17]. The larvae produce chronic inflammatory rhinitis, and the affected animals present mucus, purulent, or even hemorrhagic nasal discharge [16,18,19].…”

Section: Oestrosismentioning

confidence: 99%

“…The larvae produce chronic inflammatory rhinitis, and the affected animals present mucus, purulent, or even hemorrhagic nasal discharge [16,18,19]. Inspiratory dyspnea, frequent sneezing, head shaking, and emaciation are clinical signs that often accompany the mucopurulent nasal discharge [14,15].…”

Section: Oestrosismentioning

confidence: 99%

“…In sheep, there are a huge range of possible etiologies that can cause sinusitis: mycosis, such as those produced by Conidiobolus sp., as it has been described in sheep in Brazil and Uruguay causing necrotic sinusitis [27]; or due to the action of Oestrus ovis larvae [15,28]; or by a wide variety of bacterial agents [23,29].…”

Section: Sinusitismentioning

confidence: 99%

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Use of Computed Tomography and Thermography for the Diagnosis of Respiratory Disorders in Adult Sheep

Ferrer¹,

Ramos²,

Castells³

et al. 2021

Sheep Farming - An Approach to Feed, Growth and Health

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Respiratory diseases are one of the main causes of death and economic losses in sheep farming. The prevention and treatment of these diseases must be based on a correct diagnosis, which improves the results of health plans and optimizes the responsible use of medicines. Diagnostic imaging techniques are important working tools to diagnose this kind of disorders but have not always been sufficiently used in sheep. X-ray, although widely used in small animals, is not a valuable tool in field conditions. Ultrasonography is a noninvasive technique easily applied in sheep farms and very useful for the diagnosis of respiratory diseases; however, many articles have been already published on this topic. The present paper proposes and illustrates the use of thermography and computed tomography (CT) to support and improve the aforementioned techniques, taking into consideration that thermography is only useful for upper respiratory tract disorders and CT scan is an expensive technique for routine use but very illustrative to understand the pathogenesis of the different disorders and to improve the in vivo diagnosis.

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