Effect of cow reference group on validation reliability of genomic evaluation
We studied the effect of including genomic data for cows in the reference population of single-step evaluations. Deregressed individual cow genetic evaluations (DRP) from milk production evaluations of Nordic Red Dairy cattle were used to estimate the single-step breeding values. Validation reliabil...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016-01-01
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| Series: | Animal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1751731115002864 |
| _version_ | 1819151219343491072 |
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| author | M. Koivula I. Strandén G.P. Aamand E.A. Mäntysaari |
| author_facet | M. Koivula I. Strandén G.P. Aamand E.A. Mäntysaari |
| author_sort | M. Koivula |
| collection | DOAJ |
| description | We studied the effect of including genomic data for cows in the reference population of single-step evaluations. Deregressed individual cow genetic evaluations (DRP) from milk production evaluations of Nordic Red Dairy cattle were used to estimate the single-step breeding values. Validation reliability and bias of the evaluations were calculated with four data sets including different amount of DRP record information from genotyped cows in the reference population. The gain in reliability was from 2% to 4% units for the production traits, depending on the used DRP data and the amount of genomic data. Moreover, inclusion of genotyped bull dams and their genotyped daughters seemed to create some bias in the single-step evaluation. Still, genotyping cows and their inclusion in the reference population is advantageous and should be encouraged. |
| first_indexed | 2024-12-22T14:29:55Z |
| format | Article |
| id | doaj.art-71d046e2a519477992abd6db604a1510 |
| institution | Directory Open Access Journal |
| issn | 1751-7311 |
| language | English |
| last_indexed | 2024-12-22T14:29:55Z |
| publishDate | 2016-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Animal |
| spelling | doaj.art-71d046e2a519477992abd6db604a15102022-12-21T18:22:47ZengElsevierAnimal1751-73112016-01-0110610611066Effect of cow reference group on validation reliability of genomic evaluationM. Koivula0I. Strandén1G.P. Aamand2E.A. Mäntysaari3Natural Resources Institute Finland (Luke), Green Technology, FI-31600 Jokioinen, FinlandNatural Resources Institute Finland (Luke), Green Technology, FI-31600 Jokioinen, FinlandNAV Nordic Cattle Genetic Evaluation, Agro Food Park 15, 8200 Aarhus N, DenmarkNatural Resources Institute Finland (Luke), Green Technology, FI-31600 Jokioinen, FinlandWe studied the effect of including genomic data for cows in the reference population of single-step evaluations. Deregressed individual cow genetic evaluations (DRP) from milk production evaluations of Nordic Red Dairy cattle were used to estimate the single-step breeding values. Validation reliability and bias of the evaluations were calculated with four data sets including different amount of DRP record information from genotyped cows in the reference population. The gain in reliability was from 2% to 4% units for the production traits, depending on the used DRP data and the amount of genomic data. Moreover, inclusion of genotyped bull dams and their genotyped daughters seemed to create some bias in the single-step evaluation. Still, genotyping cows and their inclusion in the reference population is advantageous and should be encouraged.http://www.sciencedirect.com/science/article/pii/S1751731115002864genomic evaluationsingle stepreference population |
| spellingShingle | M. Koivula I. Strandén G.P. Aamand E.A. Mäntysaari Effect of cow reference group on validation reliability of genomic evaluation Animal genomic evaluation single step reference population |
| title | Effect of cow reference group on validation reliability of genomic evaluation |
| title_full | Effect of cow reference group on validation reliability of genomic evaluation |
| title_fullStr | Effect of cow reference group on validation reliability of genomic evaluation |
| title_full_unstemmed | Effect of cow reference group on validation reliability of genomic evaluation |
| title_short | Effect of cow reference group on validation reliability of genomic evaluation |
| title_sort | effect of cow reference group on validation reliability of genomic evaluation |
| topic | genomic evaluation single step reference population |
| url | http://www.sciencedirect.com/science/article/pii/S1751731115002864 |
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