GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress
Development of genetic evaluation of animals is permanent process. It was going from estimated breeding value (EBV) calculated by CC-test, across a BLUP – animal model and RR-TDM, to the genomic enhanced breeding value (GEBV) using genetic markers. Methods of genetic evaluation become a part of mark...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Slovak University of Agriculture in Nitra
2016-09-01
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| Series: | Acta Fytotechnica et Zootechnica |
| Subjects: | |
| Online Access: | http://www.acta.fapz.uniag.sk/journal/index.php/on_line/article/view/254 |
| _version_ | 1818652329609527296 |
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| author | Josef Přibyl Jiří Bauer Václav Čermák Daniela Fulínová Jiří Motyčka Petr Pešek Jana Přibylová Jiří Šplíchal Hana Vostrá Vydrová Luboš Vostrý Ludmila Zavadilová |
| author_facet | Josef Přibyl Jiří Bauer Václav Čermák Daniela Fulínová Jiří Motyčka Petr Pešek Jana Přibylová Jiří Šplíchal Hana Vostrá Vydrová Luboš Vostrý Ludmila Zavadilová |
| author_sort | Josef Přibyl |
| collection | DOAJ |
| description | Development of genetic evaluation of animals is permanent process. It was going from estimated breeding value (EBV) calculated by CC-test, across a BLUP – animal model and RR-TDM, to the genomic enhanced breeding value (GEBV) using genetic markers. Methods of genetic evaluation become a part of marketing strategies of insemination companies. Therefore all countries and association of breeders seek to be compatible with others. Now we are in a period of massive global implementation of genomic evaluation, which combines traditional BLUP with huge quantity of genetic SNP markers. Multi-step procedures are now usual in practice, which work with deregressed proofs. Development of methods attained to the single-step procedure (ssGBLUP) which overcomes some difficulties of previous methods, improves reliabilities of evaluation and compares all animals, genotyped and ungenotyped, in entire nation-wide population. Genomic evaluation influence above all young genotyped animals. In Czech Republic single-step procedure is routinely used for national evaluation of milk, linear type traits, reproduction and longevity. GEBVs are accompanied by genomic reliabilities. Genetic trends over last 20 years are in some traits different for genomic evaluation compared to traditional BLUP evaluation, although input data and genetic parameters (heritability) are the same and genotyped animals were only small proportion from entire evaluated population. Differences in genetic trends increase mainly in new batches of animals. Reason of it could be in the changed variability of breeding values and “genomic correction” of relationship between animals, which is expanded from genotyped animals to others individuals in a population. |
| first_indexed | 2024-12-17T02:20:17Z |
| format | Article |
| id | doaj.art-b9e9dd4125664dc29ecdd7e7a9fab2e8 |
| institution | Directory Open Access Journal |
| issn | 1335-258X 1336-9245 |
| language | English |
| last_indexed | 2024-12-17T02:20:17Z |
| publishDate | 2016-09-01 |
| publisher | Slovak University of Agriculture in Nitra |
| record_format | Article |
| series | Acta Fytotechnica et Zootechnica |
| spelling | doaj.art-b9e9dd4125664dc29ecdd7e7a9fab2e82022-12-21T22:07:17ZengSlovak University of Agriculture in NitraActa Fytotechnica et Zootechnica1335-258X1336-92452016-09-01193747810.15414/afz.2016.19.03.74-78GWAS in practical cattle breeding in Czech Republic: single step method, genetic progressJosef Přibyl0Jiří Bauer1Václav Čermák2Daniela Fulínová3Jiří Motyčka4Petr Pešek5Jana Přibylová6Jiří Šplíchal7Hana Vostrá Vydrová8Luboš Vostrý9Ludmila Zavadilová10Czech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicCzech University of Life Sciences, Prague, Czech RepublicDevelopment of genetic evaluation of animals is permanent process. It was going from estimated breeding value (EBV) calculated by CC-test, across a BLUP – animal model and RR-TDM, to the genomic enhanced breeding value (GEBV) using genetic markers. Methods of genetic evaluation become a part of marketing strategies of insemination companies. Therefore all countries and association of breeders seek to be compatible with others. Now we are in a period of massive global implementation of genomic evaluation, which combines traditional BLUP with huge quantity of genetic SNP markers. Multi-step procedures are now usual in practice, which work with deregressed proofs. Development of methods attained to the single-step procedure (ssGBLUP) which overcomes some difficulties of previous methods, improves reliabilities of evaluation and compares all animals, genotyped and ungenotyped, in entire nation-wide population. Genomic evaluation influence above all young genotyped animals. In Czech Republic single-step procedure is routinely used for national evaluation of milk, linear type traits, reproduction and longevity. GEBVs are accompanied by genomic reliabilities. Genetic trends over last 20 years are in some traits different for genomic evaluation compared to traditional BLUP evaluation, although input data and genetic parameters (heritability) are the same and genotyped animals were only small proportion from entire evaluated population. Differences in genetic trends increase mainly in new batches of animals. Reason of it could be in the changed variability of breeding values and “genomic correction” of relationship between animals, which is expanded from genotyped animals to others individuals in a population.http://www.acta.fapz.uniag.sk/journal/index.php/on_line/article/view/254genomic breeding valuesingle-stepgenomic relationshipgenetic trend |
| spellingShingle | Josef Přibyl Jiří Bauer Václav Čermák Daniela Fulínová Jiří Motyčka Petr Pešek Jana Přibylová Jiří Šplíchal Hana Vostrá Vydrová Luboš Vostrý Ludmila Zavadilová GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress Acta Fytotechnica et Zootechnica genomic breeding value single-step genomic relationship genetic trend |
| title | GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress |
| title_full | GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress |
| title_fullStr | GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress |
| title_full_unstemmed | GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress |
| title_short | GWAS in practical cattle breeding in Czech Republic: single step method, genetic progress |
| title_sort | gwas in practical cattle breeding in czech republic single step method genetic progress |
| topic | genomic breeding value single-step genomic relationship genetic trend |
| url | http://www.acta.fapz.uniag.sk/journal/index.php/on_line/article/view/254 |
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