Impact of natural sheep–goat transmission on detection and control of small ruminant lentivirus group C infections

Gjerset, Britt; Rimstad, Espen; Teige, Jon; Soetaert, Kristin; Jonassen, Christine Monceyron

doi:10.1016/j.vetmic.2008.09.069

Cited by 43 publications

(51 citation statements)

References 32 publications

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“…The frequency of seropositive goats reported in the present study is higher than that recorded in sheep (0.8%) in Saudi Arabia using AGID (Alluwaimi et al 1990) but lower than that reported in Jordan (12.2%) in goats (Al-Qudah et al 2006). The low percentage of seropositive goats in Oman could be attributed to the low seroconversion of infected animals (Gjerset et al 2009;Brinkhof et al 2010). In countries where modern dairying is practiced, the feeding of kids with pasteurized colostrums has resulted in reduced numbers of seropositive animals (Leitner et al 2010).…”

Section: Resultscontrasting

confidence: 64%

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Serological evidence of caprine arthritis–encephalitis virus (CAEV) infection in indigenous goats in the Sultanate of Oman

Tageldin

Johnson

Al-Busaidi

et al. 2011

Trop Anim Health Prod

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Caprine arthritis encephalitis (CAE) is a chronic debilitating disease of goats caused by a lentivirus responsible for economic losses as a result of a drop in milk production and weight loss. The objective of the study was to determine if indigenous goats from five different regions in the Sultanate of Oman exhibit serological evidence of exposure to CAEV using a competitive-inhibition ELISA technique. Blood samples were collected from slaughtered goats (N=1,110) and from the National Serum Bank (n=528). In total, 83 (5.1%) of screened samples were classed as seropositive. The results provide the first serological evidence for the presence of CAEV in Oman.

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Section: Resultscontrasting

confidence: 64%

“…It is transmitted both vertically by ingestion of milk and horizontally by direct contact (de Andres et al 2005;Leitner et al 2010). CAEV can be transmitted to sheep in mixed flocks indicating interspecies transmission (Gjerset et al 2009). Serology is considered the easiest way to diagnose infections with CAEV (de Andres et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Serological evidence of caprine arthritis–encephalitis virus (CAEV) infection in indigenous goats in the Sultanate of Oman

Tageldin

Johnson

Al-Busaidi

et al. 2011

Trop Anim Health Prod

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“…In mixed herds of sheep and goats, the success of the control program will be jeopardized unless both species are included, because some goat herds in contact with SRLV-positive sheep showed a higher rate of seroconversion (BRÜLISAUER et al, 2005;GJERSET et al, 2009;GHANEM et al, 2009).…”

Section: Prophylaxis and Strategies For The Control And Eradication Omentioning

confidence: 99%

“…This knowledge changed the approach of the epidemiological aspects of the disease as well as its control and eradication. As a result, the etiologic agent of CAE has been referred to as small ruminant lentivirus (SRLV) (BERTONI, 2007;QUASSO;MORONI, 2005;PISONI et al, 2007;GJERSET et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Some management practices, such as lamb feeding with goat's milk, use of common equipment for sheep and goats, and contact among animals are important factors that affect dissemination of cross-species infection (GJERSET et al, 2009). Purchase of animals and their introduction into the herd without proper health care is a risk factor for infection with SRLV.…”

Section: Introductionmentioning

confidence: 99%

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Use of serological diagnostic techniques in the control and eradication of caprine arthritis encephalitis: an update

Mussi

Gouveia

Cortéz

et al. 2015

Braz. J. Vet. Res. Anim. Sci.

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Caprine arthritis encephalitis (CAE) is a chronic disease caused by a small ruminant lentivirus (SRLV), which causes significant losses in goat breeding. The actual state of animal infection with SRLV is difficult to determine due to a complex pathogenesis of the virus, including factors such as delayed or intermittent seroconversion in serological tests. Several serological techniques are available for disease diagnosis, such as screening or confirmation tests, which are different in sensitivity and specificity. Regarding the choice of the test to be applied, availability of commercial immunoreagents, team training, antigen used, and cost of techniques must be considered. This review presents the serological methods available for use in different stages of CAE control and eradication programs, and management measures to be adopted in conjunction with serological diagnosis of the disease.Keywords: Caprine arthritis encephalitis virus. CAEV. Small ruminant lentivirus. SRLV. Diagnosis. Control. ResumoA artrite encefalite caprina (CAE) é uma enfermidade crônica causada por um lentivírus de pequenos ruminantes (LVPR), que ocasiona perdas significativas na caprinocultura. O estado real da infecção animal pelo LVPR é de difícil determinação em virtude da complexa patogenia do vírus, incluindo fatores como soroconversão tardia ou intermitente em testes sorológicos. Para o diagnóstico da enfermidade, diversas técnicas sorológicas estão disponíveis, como testes de triagem ou confirmatórios, com variações na sensibilidade e especificidade. Para escolha do teste a ser usado, a disponibilidade de imunorreagentes comerciais, o treinamento da equipe, o antígeno utilizado, e o custo das técnicas devem ser considerados. Esta revisão apresenta os métodos sorológicos disponíveis para uso em diferentes fases dos programas de controle e erradicação da CAE e as medidas de manejo que devem ser adotadas em conjunto com o diagnóstico sorológico da enfermidade. Palavras

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Comparative study by computed radiography, histology, and scanning electron microscopy of the articular cartilage of normal goats and in chronic infection with caprine arthritis‐encephalitis virus

Sousa

Filho

et al. 2013

Microscopy Res & Technique

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In the northeast of Brazil, caprine arthritis-encephalitis (CAE) is one of the key reasons for herd productivity decreasing that result in considerable economic losses. A comparative study was carried out using computed radiography (CR), histological analysis (HA), and scanning electronic microscopy (SEM) of the joints of CAE infected and normal goats. Humerus head surface of positive animals presented reduced joint space, increased bone density, and signs of degenerative joint disease (DJD). The carpal joint presented no morphological alterations in CR in any of the animals studied. Tarsus joint was the most affected, characterized by severe DJD, absence of joint space, increased periarticular soft tissue density, edema, and bone sclerosis. Histological analysis showed chronic tissue lesions, complete loss of the surface zone, absence of proteoglycans in the transition and radial zones and destruction of the cartilage surface in the CAE positive animals. Analysis by SEM showed ulcerated lesions with irregular and folded patterns on the joint surface that distinguished the limits between areas of normal and affected cartilage. The morphological study of the joints of normal and CAE positive goats deepened understanding of the alteration in the tissue bioarchitecture of the most affected joints. The SEM finding sustained previous histological reports, similar to those found for rheumatoid arthritis, suggesting that the goat infected with CAE can be considered as a potential model for research in this area.

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Impact of natural sheep–goat transmission on detection and control of small ruminant lentivirus group C infections

Cited by 43 publications

References 32 publications

Serological evidence of caprine arthritis–encephalitis virus (CAEV) infection in indigenous goats in the Sultanate of Oman

Serological evidence of caprine arthritis–encephalitis virus (CAEV) infection in indigenous goats in the Sultanate of Oman

Use of serological diagnostic techniques in the control and eradication of caprine arthritis encephalitis: an update

Comparative study by computed radiography, histology, and scanning electron microscopy of the articular cartilage of normal goats and in chronic infection with caprine arthritis‐encephalitis virus

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