Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance
Birth (4,197) and weaning (2,441) weight data on Boran, F1 Boran Friesian and three quarter Friesian calves as well as adjusted one-year (390), 2 year (177) and 3-year (364) weights on Boran cattle were analysed to estimate the influence of genetic and environmental factors. Boran, F1 and three quar...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
1994
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| Online Access: | https://hdl.handle.net/10568/66784 |
| _version_ | 1855539056531734528 |
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| author | Banjaw, K. Haile-Mariam, M. |
| author_browse | Banjaw, K. Haile-Mariam, M. |
| author_facet | Banjaw, K. Haile-Mariam, M. |
| author_sort | Banjaw, K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Birth (4,197) and weaning (2,441) weight data on Boran, F1 Boran Friesian and three quarter Friesian calves as well as adjusted one-year (390), 2 year (177) and 3-year (364) weights on Boran cattle were analysed to estimate the influence of genetic and environmental factors. Boran, F1 and three quarter calves weighed 25.2, 25.4 and 27.7 kg at birth and 157.5, 176.7 and 179.9 kg at weaning, respectively. All factors included in the analysis and their interaction had significant effects on both traits with the exception of the effect of season on birth and its interaction with breed group on birth weight. Weight of Boran cattle at one-, 2- and 3-years of age were 179, 269 and 338 kg, respectively. Heritability values calculated on the basis of paternal half-sibs were 0.32, 0.24, 0.48, 0.29 and 0.24 for birth, weaning, one-year, 2-year and 3-year weights, respectively. The study indicated that F1 crosses were 12.2% heavier at weaning than Boran calves. Of the environmental factors considered, year of birth was found to be the major source of variation mainly due to variation in the amount of rainfall between years. |
| format | Journal Article |
| id | CGSpace66784 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1994 |
| publishDateRange | 1994 |
| publishDateSort | 1994 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace667842024-04-25T06:01:44Z Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance Banjaw, K. Haile-Mariam, M. cattle productivity growth Birth (4,197) and weaning (2,441) weight data on Boran, F1 Boran Friesian and three quarter Friesian calves as well as adjusted one-year (390), 2 year (177) and 3-year (364) weights on Boran cattle were analysed to estimate the influence of genetic and environmental factors. Boran, F1 and three quarter calves weighed 25.2, 25.4 and 27.7 kg at birth and 157.5, 176.7 and 179.9 kg at weaning, respectively. All factors included in the analysis and their interaction had significant effects on both traits with the exception of the effect of season on birth and its interaction with breed group on birth weight. Weight of Boran cattle at one-, 2- and 3-years of age were 179, 269 and 338 kg, respectively. Heritability values calculated on the basis of paternal half-sibs were 0.32, 0.24, 0.48, 0.29 and 0.24 for birth, weaning, one-year, 2-year and 3-year weights, respectively. The study indicated that F1 crosses were 12.2% heavier at weaning than Boran calves. Of the environmental factors considered, year of birth was found to be the major source of variation mainly due to variation in the amount of rainfall between years. 1994-03 2015-06-05T12:17:39Z 2015-06-05T12:17:39Z Journal Article https://hdl.handle.net/10568/66784 en Limited Access Springer Banjaw, K. and Haile-Mariam, M. 1994. Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance. Tropical Animal Health and Production 26(1): 49-57. |
| spellingShingle | cattle productivity growth Banjaw, K. Haile-Mariam, M. Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance |
| title | Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance |
| title_full | Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance |
| title_fullStr | Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance |
| title_full_unstemmed | Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance |
| title_short | Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance |
| title_sort | productivity of boran cattle and their friesian crosses at abernossa ranch rift valley of ethiopia ii growth performance |
| topic | cattle productivity growth |
| url | https://hdl.handle.net/10568/66784 |
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