Demographic Parameters of a Domestic Cattle Herd in a Contagious-Bovine- Pleuropneumonia Infected Area of Ethiopian Highlands
| Autor: | M. Lesnoff, M. Diedhiou, G. Laval, P. Bonnet, A. Workalemahu, D. Kifle |
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| Jazyk: | English<br />French |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, Vol 55, Iss 2, Pp 139-147 (2002) |
| Druh dokumentu: | article |
| ISSN: | 0035-1865 1951-6711 |
| DOI: | 10.19182/remvt.9834 |
| Popis: | Demographic parameters of a cattle (Horro breed) herd in a rural highland district of Ethiopia (Boji, West Wellega) are described. Data were collected in the course of a herd-monitoring project on the spread of contagious bovine pleuropneumonia (CBPP). The mean age at first calving and calving rate (for females older than 4 years) in the monitored herds were estimated at 5.8 years and 0.37 year-1, respectively. The annual natural mortalities were 17, 9 and 3% for calves (0 to 9 months old), subadults (> 9 months to 4 years) and adults (> 4 years), respectively. No effect of the herd status (CBPP-free or CBPP-infected) was observed on the mean mortality of weaned animals. A main feature of cattle management in the area was the common practice of animal lending between farmers (more than 35% of the adults in the monitored herds were loaned during the year), mainly for agricultural activities and manure. This practice may have had a major impact on the observed age structure of the cattle population. |
| Databáze: | Directory of Open Access Journals |
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