Genotyping cows for the reference increase reliability of genomic prediction in a small breed

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Standard

Genotyping cows for the reference increase reliability of genomic prediction in a small breed. / Thomasen, Jørn Rind; Sørensen, Anders Christian; Lund, Mogens Sandø; Guldbrandtsen, Bernt.

Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production. Vol. 19 2013. ed. The Netherlands : Wageningen Academic Publishers, 2013. p. 621.

Research output: Contribution to book/anthology/report/proceedingConference abstract in proceedingsResearchpeer-review

Harvard

Thomasen, JR, Sørensen, AC, Lund, MS & Guldbrandtsen, B 2013, Genotyping cows for the reference increase reliability of genomic prediction in a small breed. in Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production. 2013 edn, vol. 19, Wageningen Academic Publishers, The Netherlands, pp. 621, 64th Annual Meeting of the European Federation of Anmal Science, Nantes, France, 26/08/2013. <http://www.eaap.org/Previous_Annual_Meetings/2013Nantes/Nantes_2013_Abstracts.pdf>

APA

Thomasen, J. R., Sørensen, A. C., Lund, M. S., & Guldbrandtsen, B. (2013). Genotyping cows for the reference increase reliability of genomic prediction in a small breed. In Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production (2013 ed., Vol. 19, pp. 621). Wageningen Academic Publishers. http://www.eaap.org/Previous_Annual_Meetings/2013Nantes/Nantes_2013_Abstracts.pdf

CBE

Thomasen JR, Sørensen AC, Lund MS, Guldbrandtsen B. 2013. Genotyping cows for the reference increase reliability of genomic prediction in a small breed. In Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production. 2013 ed. The Netherlands: Wageningen Academic Publishers. pp. 621.

MLA

Thomasen, Jørn Rind et al. "Genotyping cows for the reference increase reliability of genomic prediction in a small breed". Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production. 2013 udg., The Netherlands: Wageningen Academic Publishers. 2013, 621.

Vancouver

Thomasen JR, Sørensen AC, Lund MS, Guldbrandtsen B. Genotyping cows for the reference increase reliability of genomic prediction in a small breed. In Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production. 2013 ed. Vol. 19. The Netherlands: Wageningen Academic Publishers. 2013. p. 621

Author

Thomasen, Jørn Rind ; Sørensen, Anders Christian ; Lund, Mogens Sandø ; Guldbrandtsen, Bernt. / Genotyping cows for the reference increase reliability of genomic prediction in a small breed. Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production. Vol. 19 2013. ed. The Netherlands : Wageningen Academic Publishers, 2013. pp. 621

Bibtex

@inbook{1763d4d5383c497f83915cde37c41143,
title = "Genotyping cows for the reference increase reliability of genomic prediction in a small breed",
abstract = "We hypothesized that adding cows to the reference population in a breed with a small number of reference bulls would increase reliabilities of genomic breeding values and genetic gain. We tested this premise by comparing two strategies for maintaining the reference population for genetic gain, inbreeding and reliabilities of genomic predictions: 1) Adding 60 progeny tested bulls each year (B), and 2) in addition to 60 progeny tested bulls, adding 2,000 genotyped cows per year (C). Two breeding schemes were tested: 1) A turbo scheme (T) with only genotyped young bulls used intensively, and 2) a hybrid breeding scheme (H) with use of both genotyped young bulls and progeny tested bulls. The genomic selection schemes were simulated over 15 years, and the reference population of the first year of genomic selection consisted of approximately 1000 progeny tested bulls. T-B yielded 8.6% higher ∆G compared to the H-B, at the same level of ∆F. T-C yielded 15% higher ∆G compared t o T-B. Changing the breeding scheme from H-B to H-C increased ∆G by 5.5%. The lowest ∆F was observed with genotyping of cows. Reliabilities of GEBV in the C schemes showed a steep increase in reliability during the first four years, from 0.2 to just above 0.4. With B schemes the reliability increased from 0.19 to 0.27. Genotyping cows for the reference population increases genetic gain, particularly in breeding schemes with intense use of young bulls",
author = "Thomasen, {J{\o}rn Rind} and S{\o}rensen, {Anders Christian} and Lund, {Mogens Sand{\o}} and Bernt Guldbrandtsen",
year = "2013",
month = aug,
day = "26",
language = "English",
isbn = "978-90-8686-228-3",
volume = "19",
pages = "621",
booktitle = "Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production",
publisher = "Wageningen Academic Publishers",
edition = "2013",
note = "64th Annual Meeting of the European Federation of Anmal Science, EAAP 2013 ; Conference date: 26-08-2013 Through 30-09-2013",

}

RIS

TY - ABST

T1 - Genotyping cows for the reference increase reliability of genomic prediction in a small breed

AU - Thomasen, Jørn Rind

AU - Sørensen, Anders Christian

AU - Lund, Mogens Sandø

AU - Guldbrandtsen, Bernt

N1 - Conference code: 64th

PY - 2013/8/26

Y1 - 2013/8/26

N2 - We hypothesized that adding cows to the reference population in a breed with a small number of reference bulls would increase reliabilities of genomic breeding values and genetic gain. We tested this premise by comparing two strategies for maintaining the reference population for genetic gain, inbreeding and reliabilities of genomic predictions: 1) Adding 60 progeny tested bulls each year (B), and 2) in addition to 60 progeny tested bulls, adding 2,000 genotyped cows per year (C). Two breeding schemes were tested: 1) A turbo scheme (T) with only genotyped young bulls used intensively, and 2) a hybrid breeding scheme (H) with use of both genotyped young bulls and progeny tested bulls. The genomic selection schemes were simulated over 15 years, and the reference population of the first year of genomic selection consisted of approximately 1000 progeny tested bulls. T-B yielded 8.6% higher ∆G compared to the H-B, at the same level of ∆F. T-C yielded 15% higher ∆G compared t o T-B. Changing the breeding scheme from H-B to H-C increased ∆G by 5.5%. The lowest ∆F was observed with genotyping of cows. Reliabilities of GEBV in the C schemes showed a steep increase in reliability during the first four years, from 0.2 to just above 0.4. With B schemes the reliability increased from 0.19 to 0.27. Genotyping cows for the reference population increases genetic gain, particularly in breeding schemes with intense use of young bulls

AB - We hypothesized that adding cows to the reference population in a breed with a small number of reference bulls would increase reliabilities of genomic breeding values and genetic gain. We tested this premise by comparing two strategies for maintaining the reference population for genetic gain, inbreeding and reliabilities of genomic predictions: 1) Adding 60 progeny tested bulls each year (B), and 2) in addition to 60 progeny tested bulls, adding 2,000 genotyped cows per year (C). Two breeding schemes were tested: 1) A turbo scheme (T) with only genotyped young bulls used intensively, and 2) a hybrid breeding scheme (H) with use of both genotyped young bulls and progeny tested bulls. The genomic selection schemes were simulated over 15 years, and the reference population of the first year of genomic selection consisted of approximately 1000 progeny tested bulls. T-B yielded 8.6% higher ∆G compared to the H-B, at the same level of ∆F. T-C yielded 15% higher ∆G compared t o T-B. Changing the breeding scheme from H-B to H-C increased ∆G by 5.5%. The lowest ∆F was observed with genotyping of cows. Reliabilities of GEBV in the C schemes showed a steep increase in reliability during the first four years, from 0.2 to just above 0.4. With B schemes the reliability increased from 0.19 to 0.27. Genotyping cows for the reference population increases genetic gain, particularly in breeding schemes with intense use of young bulls

M3 - Conference abstract in proceedings

SN - 978-90-8686-228-3

VL - 19

SP - 621

BT - Book of Abstracts of the 64th Annual Meeting of the European Association for Animal Production

PB - Wageningen Academic Publishers

CY - The Netherlands

T2 - 64th Annual Meeting of the European Federation of Anmal Science

Y2 - 26 August 2013 through 30 September 2013

ER -