Survey of maedi-visna (MV) in Ethiopian highland sheep
A serological survey was carried out in the central highlands of Ethiopia to investigate the significance of maedi-visna on sheep reared in two types of management, on-station and on-farm. A total of 349 serum samples were collected in January 1996 from ILRI Debre Berhan station (n=203) and adjacent...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Elsevier
2001
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/29871 |
| _version_ | 1855540601225740288 |
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| author | Ayelet, G. Roger, F. Tibbo, Markos Tembely, S. |
| author_browse | Ayelet, G. Roger, F. Tembely, S. Tibbo, Markos |
| author_facet | Ayelet, G. Roger, F. Tibbo, Markos Tembely, S. |
| author_sort | Ayelet, G. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A serological survey was carried out in the central highlands of Ethiopia to investigate the significance of maedi-visna on sheep reared in two types of management, on-station and on-farm. A total of 349 serum samples were collected in January 1996 from ILRI Debre Berhan station (n=203) and adjacent farms (n=146), and Agar Gel Immunodiffusion (AGID) test was used to determine the presence of specific maedi-visna virus antibody. An additional 1104 cases of pneumopathies have been recorded including respiratory symptoms. Post mortem data recorded at the ILRI station revealed a breed difference in terms of sensibility: 10.5% for Horro (63/603 animals) and 21.6% for Menz (108/501 animals), P<0.001. The mean ages of affected Horro and Menz were 20±1.3 and 30±1.9 months, respectively and 27±1.7 months, overall. Clinical signs recorded for suspicion of interstitial pneumonia were dyspnoea accounting for 57%, coughing for 55% and nasal discharge for 6.4%. The duration of clinical signs for interstitial pneumonia was 35.3 days vs. 16.4 for other causes. In the present study, a prevalence rate of 3.7% was obtained out of 349 sheep sera examined for the presence of MV virus surface glycoprotein (gp135) specific antibodies. There was a significant difference between samples collected from the farms and the station (P<0.05). The prevalence rate was higher (P<0.05) in males sheep than females (10.0% and 2.9% respectively). A peak of seropositivity was observed at the age of 36 months. A breed comparison between the Menz and the Horro on-station showed little difference with a prevalence rate of 5.9% and 4.8% respectively. The danger of intensification of breeding in the tropics is stressed. |
| format | Journal Article |
| id | CGSpace29871 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2001 |
| publishDateRange | 2001 |
| publishDateSort | 2001 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace298712023-12-08T19:36:04Z Survey of maedi-visna (MV) in Ethiopian highland sheep Ayelet, G. Roger, F. Tibbo, Markos Tembely, S. sheep visna maedi virus highlands morbidity debre berhan A serological survey was carried out in the central highlands of Ethiopia to investigate the significance of maedi-visna on sheep reared in two types of management, on-station and on-farm. A total of 349 serum samples were collected in January 1996 from ILRI Debre Berhan station (n=203) and adjacent farms (n=146), and Agar Gel Immunodiffusion (AGID) test was used to determine the presence of specific maedi-visna virus antibody. An additional 1104 cases of pneumopathies have been recorded including respiratory symptoms. Post mortem data recorded at the ILRI station revealed a breed difference in terms of sensibility: 10.5% for Horro (63/603 animals) and 21.6% for Menz (108/501 animals), P<0.001. The mean ages of affected Horro and Menz were 20±1.3 and 30±1.9 months, respectively and 27±1.7 months, overall. Clinical signs recorded for suspicion of interstitial pneumonia were dyspnoea accounting for 57%, coughing for 55% and nasal discharge for 6.4%. The duration of clinical signs for interstitial pneumonia was 35.3 days vs. 16.4 for other causes. In the present study, a prevalence rate of 3.7% was obtained out of 349 sheep sera examined for the presence of MV virus surface glycoprotein (gp135) specific antibodies. There was a significant difference between samples collected from the farms and the station (P<0.05). The prevalence rate was higher (P<0.05) in males sheep than females (10.0% and 2.9% respectively). A peak of seropositivity was observed at the age of 36 months. A breed comparison between the Menz and the Horro on-station showed little difference with a prevalence rate of 5.9% and 4.8% respectively. The danger of intensification of breeding in the tropics is stressed. 2001-03 2013-06-11T09:25:14Z 2013-06-11T09:25:14Z Journal Article https://hdl.handle.net/10568/29871 en Limited Access Elsevier Veterinary Journal;161(2): 208-210 |
| spellingShingle | sheep visna maedi virus highlands morbidity debre berhan Ayelet, G. Roger, F. Tibbo, Markos Tembely, S. Survey of maedi-visna (MV) in Ethiopian highland sheep |
| title | Survey of maedi-visna (MV) in Ethiopian highland sheep |
| title_full | Survey of maedi-visna (MV) in Ethiopian highland sheep |
| title_fullStr | Survey of maedi-visna (MV) in Ethiopian highland sheep |
| title_full_unstemmed | Survey of maedi-visna (MV) in Ethiopian highland sheep |
| title_short | Survey of maedi-visna (MV) in Ethiopian highland sheep |
| title_sort | survey of maedi visna mv in ethiopian highland sheep |
| topic | sheep visna maedi virus highlands morbidity debre berhan |
| url | https://hdl.handle.net/10568/29871 |
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