Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information
The accuracy of genetic prediction when pedigree ( P A ) or pedigree and marker-based ( PM A ) relationships were used in mixed model equations was assessed. Daughter yield deviations (DYD) records for milk, fat and protein yields on Holstein sires (n = 1,811) with DNA marker information were ana...
| Main Authors: | , |
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| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
TSAP and ILRI
2006
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/4769 |
| _version_ | 1855524797932371968 |
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| author | Maiwashe, A. Garrick, D.J. |
| author_browse | Garrick, D.J. Maiwashe, A. |
| author_facet | Maiwashe, A. Garrick, D.J. |
| author_sort | Maiwashe, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The accuracy of genetic prediction when pedigree ( P A ) or pedigree and marker-based ( PM A )
relationships were used in mixed model equations was assessed. Daughter yield deviations (DYD)
records for milk, fat and protein yields on Holstein sires (n = 1,811) with DNA marker information
were analysed. Three sets of estimated breeding values (EBV) were obtained: (1) EBV-ALL
(considered all sources of information and the inverse of), (2) EBV-PED (similar to EBV-ALL
but the sire’s own DYD was excluded), and (3) EBV-MRK (similar to EBV-PED except that the
inverse of was used). Linear and rank correlations were computed between EBV-ALL and EBVPED or EBV-MRK. The accuracy increased by 4.3% for milk yield but did not change for fat and
protein yields when was replaced by for sires without sons. These results suggest that genetic
markers may be used to enhance accuracy in genetic evaluation particularly for young animals. |
| format | Conference Paper |
| id | CGSpace4769 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | TSAP and ILRI |
| publisherStr | TSAP and ILRI |
| record_format | dspace |
| spelling | CGSpace47692022-02-18T12:41:24Z Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information Maiwashe, A. Garrick, D.J. breeds livestock The accuracy of genetic prediction when pedigree ( P A ) or pedigree and marker-based ( PM A ) relationships were used in mixed model equations was assessed. Daughter yield deviations (DYD) records for milk, fat and protein yields on Holstein sires (n = 1,811) with DNA marker information were analysed. Three sets of estimated breeding values (EBV) were obtained: (1) EBV-ALL (considered all sources of information and the inverse of), (2) EBV-PED (similar to EBV-ALL but the sire’s own DYD was excluded), and (3) EBV-MRK (similar to EBV-PED except that the inverse of was used). Linear and rank correlations were computed between EBV-ALL and EBVPED or EBV-MRK. The accuracy increased by 4.3% for milk yield but did not change for fat and protein yields when was replaced by for sires without sons. These results suggest that genetic markers may be used to enhance accuracy in genetic evaluation particularly for young animals. 2006 2011-08-14T11:59:46Z 2011-08-14T11:59:46Z Conference Paper https://hdl.handle.net/10568/4769 en Open Access TSAP and ILRI Maiwashe, A. and Garrick, D.J. 2006. Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information. In: Rege, J.E.O.; Nyamu, A.M.; Sendalo, D. (eds.). 2006. The role of biotechnology in animal agriculture to address poverty in Africa: Opportunities and challenges. Proceedings of the 4th All Africa Conference on Animal Agriculture and the 31st annual meeting of Tanzania Society for Animal Production, Arusha, Tanzania, 20–24 September 2005. Dar es Salaam, Tanzania: TSAP and Nairobi, Kenya: ILRI. |
| spellingShingle | breeds livestock Maiwashe, A. Garrick, D.J. Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| title | Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| title_full | Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| title_fullStr | Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| title_full_unstemmed | Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| title_short | Accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| title_sort | accuracy of genetic prediction obtained using genetic relationships based on pedigree or marker information |
| topic | breeds livestock |
| url | https://hdl.handle.net/10568/4769 |
| work_keys_str_mv | AT maiwashea accuracyofgeneticpredictionobtainedusinggeneticrelationshipsbasedonpedigreeormarkerinformation AT garrickdj accuracyofgeneticpredictionobtainedusinggeneticrelationshipsbasedonpedigreeormarkerinformation |