Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses

Karin Meyer; Bruce Tier

Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses

Karin Meyer
, Bruce Tier

Animal Genetics and Breeding Unit

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Approximate prediction error covariances among estimates of random regression coefficients for direct genetic effects were obtained for two beef cattle data sets using an extension of the method of Graser and Tier (1997). From these, approximate accuracies of breeding value estimates for birth, 200 day, 400 day and 600 day weight were calculated. Corresponding 'exact' values were determined from the inverse of the coefficient matrix in the mixed model equations (MME), estimating the diagonal blocks of the inverse pertaining to random regression coefficients using Gibbs sampling. Approximate and 'exact' values were contrasted with empirical accuracies, obtained as correlations between true and estimated genetic values in a simulation study. Results showed good agreement between approximate and 'exact' values.

Original language	English
Title of host publication	Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Editors	Abigail Henderson
Place of Publication	Armidale, Australia
Publisher	Association for the Advancement of Animal Breeding and Genetics (AAABG)
Pages	391-394
Volume	15
ISBN (Print)	0958629927
Publication status	Published - 2003
Event	AAABG 2003: 15th Conference of the Association for the Advancement of Animal Breeding and Genetics - Melbourne, Australia Duration: 7 Jul 2003 → 11 Jul 2003

Conference

Conference	AAABG 2003: 15th Conference of the Association for the Advancement of Animal Breeding and Genetics
City	Melbourne, Australia
Period	7/07/03 → 11/07/03

Keywords

Animal Breeding

Access to Document

https://hdl.handle.net/1959.11/4355

Handle.net

Persistent link

Cite this

Meyer, K., & Tier, B. (2003). Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses. In A. Henderson (Ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics (Vol. 15, pp. 391-394). Association for the Advancement of Animal Breeding and Genetics (AAABG). https://hdl.handle.net/1959.11/4355

Meyer, Karin ; Tier, Bruce. / Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses. Proceedings of the Association for the Advancement of Animal Breeding and Genetics. editor / Abigail Henderson. Vol. 15 Armidale, Australia : Association for the Advancement of Animal Breeding and Genetics (AAABG), 2003. pp. 391-394

@inproceedings{f11e96c46fdb4d3b908ea7ae73effb1e,

title = "Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses",

abstract = "Approximate prediction error covariances among estimates of random regression coefficients for direct genetic effects were obtained for two beef cattle data sets using an extension of the method of Graser and Tier (1997). From these, approximate accuracies of breeding value estimates for birth, 200 day, 400 day and 600 day weight were calculated. Corresponding 'exact' values were determined from the inverse of the coefficient matrix in the mixed model equations (MME), estimating the diagonal blocks of the inverse pertaining to random regression coefficients using Gibbs sampling. Approximate and 'exact' values were contrasted with empirical accuracies, obtained as correlations between true and estimated genetic values in a simulation study. Results showed good agreement between approximate and 'exact' values.",

keywords = "Animal Breeding",

author = "Karin Meyer and Bruce Tier",

year = "2003",

language = "English",

isbn = "0958629927",

volume = "15",

pages = "391--394",

editor = "Abigail Henderson",

booktitle = "Proceedings of the Association for the Advancement of Animal Breeding and Genetics",

publisher = "Association for the Advancement of Animal Breeding and Genetics (AAABG)",

note = "AAABG 2003: 15th Conference of the Association for the Advancement of Animal Breeding and Genetics ; Conference date: 07-07-2003 Through 11-07-2003",

}

Meyer, K & Tier, B 2003, Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses. in A Henderson (ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics. vol. 15, Association for the Advancement of Animal Breeding and Genetics (AAABG), Armidale, Australia, pp. 391-394, AAABG 2003: 15th Conference of the Association for the Advancement of Animal Breeding and Genetics, Melbourne, Australia, 7/07/03. <https://hdl.handle.net/1959.11/4355>

Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses. / Meyer, Karin; Tier, Bruce.
Proceedings of the Association for the Advancement of Animal Breeding and Genetics. ed. / Abigail Henderson. Vol. 15 Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG), 2003. p. 391-394.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses

AU - Meyer, Karin

AU - Tier, Bruce

PY - 2003

Y1 - 2003

N2 - Approximate prediction error covariances among estimates of random regression coefficients for direct genetic effects were obtained for two beef cattle data sets using an extension of the method of Graser and Tier (1997). From these, approximate accuracies of breeding value estimates for birth, 200 day, 400 day and 600 day weight were calculated. Corresponding 'exact' values were determined from the inverse of the coefficient matrix in the mixed model equations (MME), estimating the diagonal blocks of the inverse pertaining to random regression coefficients using Gibbs sampling. Approximate and 'exact' values were contrasted with empirical accuracies, obtained as correlations between true and estimated genetic values in a simulation study. Results showed good agreement between approximate and 'exact' values.

AB - Approximate prediction error covariances among estimates of random regression coefficients for direct genetic effects were obtained for two beef cattle data sets using an extension of the method of Graser and Tier (1997). From these, approximate accuracies of breeding value estimates for birth, 200 day, 400 day and 600 day weight were calculated. Corresponding 'exact' values were determined from the inverse of the coefficient matrix in the mixed model equations (MME), estimating the diagonal blocks of the inverse pertaining to random regression coefficients using Gibbs sampling. Approximate and 'exact' values were contrasted with empirical accuracies, obtained as correlations between true and estimated genetic values in a simulation study. Results showed good agreement between approximate and 'exact' values.

KW - Animal Breeding

UR - http://trove.nla.gov.au/work/22223828?selectedversion=NBD24379203

UR - http://www.aaabg.org/livestocklibrary/2003/391-394.pdf

M3 - Conference contribution

SN - 0958629927

VL - 15

SP - 391

EP - 394

BT - Proceedings of the Association for the Advancement of Animal Breeding and Genetics

A2 - Henderson, Abigail

PB - Association for the Advancement of Animal Breeding and Genetics (AAABG)

CY - Armidale, Australia

T2 - AAABG 2003: 15th Conference of the Association for the Advancement of Animal Breeding and Genetics

Y2 - 7 July 2003 through 11 July 2003

ER -

Approximate and 'exact' accuracies of breeding value estimates for growth of beef cattle from random regression analyses

Abstract

Conference

Keywords

Access to Document

Handle.net

Fingerprint

Cite this