Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance
Reproductive performance and disease data were recorded for 2 years on 1,824 dairy cows in smallholder farms using participatory approaches and onfarm recording. Most animals experienced one service to conception. Calving intervals were long, ranging between 261 and 761 days, with an average of 451±...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Conference Paper |
| Language: | Inglés |
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American Society of Animal Science
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/78496 |
| _version_ | 1855537927739670528 |
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| author | Mujibi, F.D.N. Ojango, Julie M.K. Rao, E.J.O. Karanja, T. Kihara, Absolomon Marete, A. Baltenweck, Isabelle Poole, Elizabeth J. Rege, J.E.O. Gondro, C. Weerasinghe, W.M.S.P. Gibson, John P. Okeyo Mwai, Ally |
| author_browse | Baltenweck, Isabelle Gibson, John P. Gondro, C. Karanja, T. Kihara, Absolomon Marete, A. Mujibi, F.D.N. Ojango, Julie M.K. Okeyo Mwai, Ally Poole, Elizabeth J. Rao, E.J.O. Rege, J.E.O. Weerasinghe, W.M.S.P. |
| author_facet | Mujibi, F.D.N. Ojango, Julie M.K. Rao, E.J.O. Karanja, T. Kihara, Absolomon Marete, A. Baltenweck, Isabelle Poole, Elizabeth J. Rege, J.E.O. Gondro, C. Weerasinghe, W.M.S.P. Gibson, John P. Okeyo Mwai, Ally |
| author_sort | Mujibi, F.D.N. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Reproductive performance and disease data were recorded for 2 years on 1,824 dairy cows in smallholder farms using participatory approaches and onfarm recording. Most animals experienced one service to conception. Calving intervals were long, ranging between 261 and 761 days, with an average of 451±101days. Herd level of production (HeL) had significant effect on calving interval. However, there was no difference between crossbreds with different levels of exotic breed percentage or in different HeL classes in disease incidence. Most animals had less than 2 treatment events, despite the high disease burden in the study areas. Mortality rates were low, ranging from 2.13% to 2.65%. Even though the crossbred animals had higher performance compared to indigenous animals, the gains obtained were below what would be possible with better management. These results suggest that crosses with low exotic proportions would be the most optimal for the production systems studied. |
| format | Conference Paper |
| id | CGSpace78496 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | American Society of Animal Science |
| publisherStr | American Society of Animal Science |
| record_format | dspace |
| spelling | CGSpace784962025-11-04T16:27:59Z Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance Mujibi, F.D.N. Ojango, Julie M.K. Rao, E.J.O. Karanja, T. Kihara, Absolomon Marete, A. Baltenweck, Isabelle Poole, Elizabeth J. Rege, J.E.O. Gondro, C. Weerasinghe, W.M.S.P. Gibson, John P. Okeyo Mwai, Ally dairies livestock genetics Reproductive performance and disease data were recorded for 2 years on 1,824 dairy cows in smallholder farms using participatory approaches and onfarm recording. Most animals experienced one service to conception. Calving intervals were long, ranging between 261 and 761 days, with an average of 451±101days. Herd level of production (HeL) had significant effect on calving interval. However, there was no difference between crossbreds with different levels of exotic breed percentage or in different HeL classes in disease incidence. Most animals had less than 2 treatment events, despite the high disease burden in the study areas. Mortality rates were low, ranging from 2.13% to 2.65%. Even though the crossbred animals had higher performance compared to indigenous animals, the gains obtained were below what would be possible with better management. These results suggest that crosses with low exotic proportions would be the most optimal for the production systems studied. 2014-08-22 2016-12-23T05:50:06Z 2016-12-23T05:50:06Z Conference Paper https://hdl.handle.net/10568/78496 en Open Access application/pdf American Society of Animal Science Mujibi, F.D.N., Ojango, J.M.K., Rao, E.J.O., Karanja, T., Kihara, A., Marete, A., Baltenweck, I., Poole, E.J., Rege, J.E.O., Gondro, C., Weerasinghe, W.M.S.P., Gibson, J.P. and Okeyo, A.M. 2014. Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance. IN: Proceedings of the 10th World Congress on Genetics Applied to Livestock Production, Vancouver, Canada, 17-22 August 2014. Champaign, USA: American Society of Animal Science. |
| spellingShingle | dairies livestock genetics Mujibi, F.D.N. Ojango, Julie M.K. Rao, E.J.O. Karanja, T. Kihara, Absolomon Marete, A. Baltenweck, Isabelle Poole, Elizabeth J. Rege, J.E.O. Gondro, C. Weerasinghe, W.M.S.P. Gibson, John P. Okeyo Mwai, Ally Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance |
| title | Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance |
| title_full | Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance |
| title_fullStr | Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance |
| title_full_unstemmed | Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance |
| title_short | Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance |
| title_sort | use of high density snp genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms assessment of reproductive and health performance |
| topic | dairies livestock genetics |
| url | https://hdl.handle.net/10568/78496 |
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