Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia
The study was conducted between September 2003 and April 2004 in Denbecha and Jabitehenan weredas (districts) located in the lowland (< 1600 m) and midland (1600-2000 m) areas. It generated a baseline data on the epidemiology of trypanosomosis and community awareness regarding the disease in the...
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| Format: | Article |
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CIRAD
2005-03-01
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| Series: | Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux |
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| Online Access: | http://revues.cirad.fr/index.php/REMVT/article/view/9927 |
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| author | S. Dagnachew A. K. Sangwan G. Abébé |
| author_facet | S. Dagnachew A. K. Sangwan G. Abébé |
| author_sort | S. Dagnachew |
| collection | DOAJ |
| description | The study was conducted between September 2003 and April 2004 in Denbecha and Jabitehenan weredas (districts) located in the lowland (< 1600 m) and midland (1600-2000 m) areas. It generated a baseline data on the epidemiology of trypanosomosis and community awareness regarding the disease in the Abay (Blue Nile) Basin areas of Northwest Ethiopia. A questionnaire survey revealed trypanosomosis to be the most important problem affecting animals and impeding agricultural activities in the areas. Glossina morsitans submorsitans was the only tsetse fly species prevalent along with other biting tabanid and muscid flies. The apparent fly densities (flies/trap/day) were significantly higher (p < 0.05) in the late rainy season (1.08, 8.78 and 91 for G. m. submorsitans, tabanids and muscids, respectively) than in the dry season (0.68, 0.35 and 7.33, respectively). The apparent density of G. m. submorsitans was significantly higher (p < 0.05) in the lowland areas than in the midland areas in both the late rainy season and the dry season. A total of 1648 cattle were examined for trypanosomosis with the buffy coat technique and the seasonal prevalence (17.07 and 12.35%, respectively) was significantly (p < 0.05) different. Infection rates were higher (p < 0.05) in the lowland areas, with 19.87 and 17.62%, than in the midland areas, with 13.39 and 6.54%, in the late rainy season and the dry season, respectively. The mean packed cell volume (PCV) values of parasitemic and aparasitemic animals during the late rainy season were 20.7 ± 3.5 and 26.6 ± 4.3 (p < 0.001), while they were 21.4 ± 3.6 and 26.6 ± 4.3 (p < 0.001) during the dry season, respectively. The regression analysis indicated that the herd average PCV decreased with the increasing prevalence of trypanosome infections in both seasons. |
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| id | doaj.art-45810e9d35f3429a86f29a52c3797646 |
| institution | Directory Open Access Journal |
| issn | 0035-1865 1951-6711 |
| language | English |
| last_indexed | 2024-03-12T20:16:24Z |
| publishDate | 2005-03-01 |
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| series | Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux |
| spelling | doaj.art-45810e9d35f3429a86f29a52c37976462023-08-02T01:18:28ZengCIRADRevue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux0035-18651951-67112005-03-0158315115710.19182/remvt.99279927Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest EthiopiaS. Dagnachew0A. K. Sangwan1G. Abébé2Bahir Dar Veterinary Laboratory, Amhara Region Bureau of Agriculture, Bahir Dar, EthiopiaDepartment of Veterinary Parasitology, College of Veterinary Sciences, CCS Haryana Agricultural University, Hisar125004, IndiaFaculty of Veterinary Medicine, Addis Ababa University, PO Box 34, Debre Zeit, EthiopiaThe study was conducted between September 2003 and April 2004 in Denbecha and Jabitehenan weredas (districts) located in the lowland (< 1600 m) and midland (1600-2000 m) areas. It generated a baseline data on the epidemiology of trypanosomosis and community awareness regarding the disease in the Abay (Blue Nile) Basin areas of Northwest Ethiopia. A questionnaire survey revealed trypanosomosis to be the most important problem affecting animals and impeding agricultural activities in the areas. Glossina morsitans submorsitans was the only tsetse fly species prevalent along with other biting tabanid and muscid flies. The apparent fly densities (flies/trap/day) were significantly higher (p < 0.05) in the late rainy season (1.08, 8.78 and 91 for G. m. submorsitans, tabanids and muscids, respectively) than in the dry season (0.68, 0.35 and 7.33, respectively). The apparent density of G. m. submorsitans was significantly higher (p < 0.05) in the lowland areas than in the midland areas in both the late rainy season and the dry season. A total of 1648 cattle were examined for trypanosomosis with the buffy coat technique and the seasonal prevalence (17.07 and 12.35%, respectively) was significantly (p < 0.05) different. Infection rates were higher (p < 0.05) in the lowland areas, with 19.87 and 17.62%, than in the midland areas, with 13.39 and 6.54%, in the late rainy season and the dry season, respectively. The mean packed cell volume (PCV) values of parasitemic and aparasitemic animals during the late rainy season were 20.7 ± 3.5 and 26.6 ± 4.3 (p < 0.001), while they were 21.4 ± 3.6 and 26.6 ± 4.3 (p < 0.001) during the dry season, respectively. The regression analysis indicated that the herd average PCV decreased with the increasing prevalence of trypanosome infections in both seasons.http://revues.cirad.fr/index.php/REMVT/article/view/9927BovinGlossina morsitans submorsitansTrypanosomoseEpidémiologieFacteur lié au siteAltitudeVariation saisonnièreEthiopie |
| spellingShingle | S. Dagnachew A. K. Sangwan G. Abébé Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux Bovin Glossina morsitans submorsitans Trypanosomose Epidémiologie Facteur lié au site Altitude Variation saisonnière Ethiopie |
| title | Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia |
| title_full | Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia |
| title_fullStr | Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia |
| title_full_unstemmed | Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia |
| title_short | Epidemiology of Bovine Trypanosomosis in the Abay (Blue Nile) Basin Areas of Northwest Ethiopia |
| title_sort | epidemiology of bovine trypanosomosis in the abay blue nile basin areas of northwest ethiopia |
| topic | Bovin Glossina morsitans submorsitans Trypanosomose Epidémiologie Facteur lié au site Altitude Variation saisonnière Ethiopie |
| url | http://revues.cirad.fr/index.php/REMVT/article/view/9927 |
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