Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system
A total of 179 heifers, primiparous and multiparous Boran cows were assigned to four breeding units and mated over a 4 - month breeidng season in a single-sire mating system. Mean body weight and body condition scores at the beginning of mating ranged from 363 + 6 kg to 388 + 7 kg and from 6.7 + 0.1...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
1993
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/29692 |
| _version_ | 1855542137136873472 |
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| author | Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. |
| author_browse | Entwistle, K.W. Mukasa-Mugerwa, E. Tegegne, Azage |
| author_facet | Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. |
| author_sort | Tegegne, Azage |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A total of 179 heifers, primiparous and multiparous Boran cows were assigned to four breeding units and mated over a 4 - month breeidng season in a single-sire mating system. Mean body weight and body condition scores at the beginning of mating ranged from 363 + 6 kg to 388 + 7 kg and from 6.7 + 0.1 to 7.0 + 0.1 in the four breeding units, respectively. Body weight losses in cows in the four breeding units ranged from 8 to 35kg over the mating period, losses being higher in lactating cows (44 kg) than in non-lactating cows (6 kg). Pregnancy rates ranged from 81 to 94 percent in the four breeding units and were not influenced by lactation status. First calf heifers had the lowest pregnancy rate with a tendency for increasing pregnancy rates with parity in multiparous cows. Lactating cows calved later (P<0.05) than did non-lactating cows, and heifers calved later (P<0.05) than cows. A smaller percentage of heifers (43 percent) than multiparous cows (64 percent) calved during the first two calving months. There was no significant correlation between body weight, weight changes, or calf growth performances, and pregnancy rate and calving patterns. |
| format | Journal Article |
| id | CGSpace29692 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1993 |
| publishDateRange | 1993 |
| publishDateSort | 1993 |
| record_format | dspace |
| spelling | CGSpace296922022-01-29T16:51:17Z Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. zebu cattle reproductive performance cows mating systems heifers puerperium weight age livestock management A total of 179 heifers, primiparous and multiparous Boran cows were assigned to four breeding units and mated over a 4 - month breeidng season in a single-sire mating system. Mean body weight and body condition scores at the beginning of mating ranged from 363 + 6 kg to 388 + 7 kg and from 6.7 + 0.1 to 7.0 + 0.1 in the four breeding units, respectively. Body weight losses in cows in the four breeding units ranged from 8 to 35kg over the mating period, losses being higher in lactating cows (44 kg) than in non-lactating cows (6 kg). Pregnancy rates ranged from 81 to 94 percent in the four breeding units and were not influenced by lactation status. First calf heifers had the lowest pregnancy rate with a tendency for increasing pregnancy rates with parity in multiparous cows. Lactating cows calved later (P<0.05) than did non-lactating cows, and heifers calved later (P<0.05) than cows. A smaller percentage of heifers (43 percent) than multiparous cows (64 percent) calved during the first two calving months. There was no significant correlation between body weight, weight changes, or calf growth performances, and pregnancy rate and calving patterns. 1993 2013-06-11T09:24:30Z 2013-06-11T09:24:30Z Journal Article https://hdl.handle.net/10568/29692 en Limited Access Tropical Agriculture;70(2): 174-178 |
| spellingShingle | zebu cattle reproductive performance cows mating systems heifers puerperium weight age livestock management Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system |
| title | Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system |
| title_full | Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system |
| title_fullStr | Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system |
| title_full_unstemmed | Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system |
| title_short | Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system |
| title_sort | factors affecting the reproductive performance of boran bos indicus cows in a single sire mating system |
| topic | zebu cattle reproductive performance cows mating systems heifers puerperium weight age livestock management |
| url | https://hdl.handle.net/10568/29692 |
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