Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes
The breeding value (EBV) of Holstein cattle milk performance from the first lactation was evaluated using a regular Animal Model or by Single-Step Prediction of the genomic breeding value (GEBV). A total of 838 bulls were genotyped using the Illumina BovineSNP50 Beadchip V2. Two overlapping sets of...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2012-04-01
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| Series: | Czech Journal of Animal Science |
| Subjects: | |
| Online Access: | https://cjas.agriculturejournals.cz/artkey/cjs-201204-0001_single-step-prediction-of-genomic-breeding-value-in-a-small-dairy-cattle-population-with-strong-import-of-forei.php |
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| author | J. Přibyl J. Haman T. Kott J. Přibylová M. Šimečková L. Vostrý L. Zavadilová V. Čermák Z. Růžička J. Šplíchal M. Verner J. Motyčka L. Vondrášek |
| author_facet | J. Přibyl J. Haman T. Kott J. Přibylová M. Šimečková L. Vostrý L. Zavadilová V. Čermák Z. Růžička J. Šplíchal M. Verner J. Motyčka L. Vondrášek |
| author_sort | J. Přibyl |
| collection | DOAJ |
| description | The breeding value (EBV) of Holstein cattle milk performance from the first lactation was evaluated using a regular Animal Model or by Single-Step Prediction of the genomic breeding value (GEBV). A total of 838 bulls were genotyped using the Illumina BovineSNP50 Beadchip V2. Two overlapping sets of milk performances were evaluated: calving years 1991-2004, with 729 341 lactations and 1 394 487 animals in the pedigree and calving years 1996-2009, with 808 436 lactations and 1 487 608 animals in the pedigree. The older data set included 526 genotyped bulls, in which the daughters' milk performance was known for 210 individuals. All of the genotyped animals were included in the newer data set. Of the young genotyped bulls from the older set, 279 had more than 50 daughters with performance records in the newer set. Genomic relationship matrices (G) were constructed from the allele frequencies of the current genotyped population or by assuming a constant value of 0.5 for all loci. Using current allele frequencies, the correlation of G with the pedigree relationship (A) was 0.74, while it was 0.77 when the constant value was used. G was blended with A with weights of 80 or 99%. The average EBV of the genotyped bulls exceeded the mean EBV of the entire population by 3 SD. Although the number of reference bulls was small, genotyping resulted in an increase of approximately 0.05 in the correlation of the GEBV of young bulls with their results after progeny testing. Only small differences in correlations were found in dependency on the methods used for the determination of G and in dependency on the weight used in blending G with A. Both EBV and GEBV in the older set showed higher correlations with the GEBV of the newer set than the EBV of the newer set. |
| first_indexed | 2024-04-10T08:26:24Z |
| format | Article |
| id | doaj.art-a3c8d78f12d6429fb509bdbae3ddfcba |
| institution | Directory Open Access Journal |
| issn | 1212-1819 1805-9309 |
| language | English |
| last_indexed | 2024-04-10T08:26:24Z |
| publishDate | 2012-04-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Animal Science |
| spelling | doaj.art-a3c8d78f12d6429fb509bdbae3ddfcba2023-02-23T03:33:00ZengCzech Academy of Agricultural SciencesCzech Journal of Animal Science1212-18191805-93092012-04-0157415115910.17221/5890-CJAScjs-201204-0001Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genesJ. Přibyl0J. Haman1T. Kott2J. Přibylová3M. Šimečková4L. Vostrý5L. Zavadilová6V. Čermák7Z. Růžička8J. Šplíchal9M. Verner10J. Motyčka11L. Vondrášek12Institute of Animal Science, Prague-Uhříněves, Czech RepublicInstitute of Animal Science, Prague-Uhříněves, Czech RepublicInstitute of Animal Science, Prague-Uhříněves, Czech RepublicInstitute of Animal Science, Prague-Uhříněves, Czech RepublicInstitute of Animal Science, Prague-Uhříněves, Czech RepublicInstitute of Animal Science, Prague-Uhříněves, Czech RepublicInstitute of Animal Science, Prague-Uhříněves, Czech RepublicCzech Moravian Breeding Corporation, Prague, Czech RepublicCzech Moravian Breeding Corporation, Prague, Czech RepublicCzech Moravian Breeding Corporation, Prague, Czech RepublicCzech Moravian Breeding Corporation, Prague, Czech RepublicHolstein Cattle Breeders Association of the Czech Republic, Prague, Czech RepublicHolstein Cattle Breeders Association of the Czech Republic, Prague, Czech RepublicThe breeding value (EBV) of Holstein cattle milk performance from the first lactation was evaluated using a regular Animal Model or by Single-Step Prediction of the genomic breeding value (GEBV). A total of 838 bulls were genotyped using the Illumina BovineSNP50 Beadchip V2. Two overlapping sets of milk performances were evaluated: calving years 1991-2004, with 729 341 lactations and 1 394 487 animals in the pedigree and calving years 1996-2009, with 808 436 lactations and 1 487 608 animals in the pedigree. The older data set included 526 genotyped bulls, in which the daughters' milk performance was known for 210 individuals. All of the genotyped animals were included in the newer data set. Of the young genotyped bulls from the older set, 279 had more than 50 daughters with performance records in the newer set. Genomic relationship matrices (G) were constructed from the allele frequencies of the current genotyped population or by assuming a constant value of 0.5 for all loci. Using current allele frequencies, the correlation of G with the pedigree relationship (A) was 0.74, while it was 0.77 when the constant value was used. G was blended with A with weights of 80 or 99%. The average EBV of the genotyped bulls exceeded the mean EBV of the entire population by 3 SD. Although the number of reference bulls was small, genotyping resulted in an increase of approximately 0.05 in the correlation of the GEBV of young bulls with their results after progeny testing. Only small differences in correlations were found in dependency on the methods used for the determination of G and in dependency on the weight used in blending G with A. Both EBV and GEBV in the older set showed higher correlations with the GEBV of the newer set than the EBV of the newer set.https://cjas.agriculturejournals.cz/artkey/cjs-201204-0001_single-step-prediction-of-genomic-breeding-value-in-a-small-dairy-cattle-population-with-strong-import-of-forei.phpgenomic breeding valuesingle-step predictionfirst lactationgenomic relationshipgenetic trend |
| spellingShingle | J. Přibyl J. Haman T. Kott J. Přibylová M. Šimečková L. Vostrý L. Zavadilová V. Čermák Z. Růžička J. Šplíchal M. Verner J. Motyčka L. Vondrášek Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes Czech Journal of Animal Science genomic breeding value single-step prediction first lactation genomic relationship genetic trend |
| title | Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes |
| title_full | Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes |
| title_fullStr | Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes |
| title_full_unstemmed | Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes |
| title_short | Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes |
| title_sort | single step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes |
| topic | genomic breeding value single-step prediction first lactation genomic relationship genetic trend |
| url | https://cjas.agriculturejournals.cz/artkey/cjs-201204-0001_single-step-prediction-of-genomic-breeding-value-in-a-small-dairy-cattle-population-with-strong-import-of-forei.php |
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