Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny

Stephen Barwick; David Johnston; Matthew Lee Wolcott; J F Wilkins; W A McKiernan

Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny

Stephen Barwick, David Johnston, Matthew Lee Wolcott, J F Wilkins, W A McKiernan

Animal Genetics and Breeding Unit

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

Abstract

The Angus BREEDPLAN IMF% (intramuscular fat %) EBV was evaluated in 320 100d-fed Angus x Hereford steer progeny of 25 sires. Results showed using the EBV to select among sires would significantly increase marbling scores and IMF%, and that this was unaffected by growth regime to feedlot entry or by whether slaughter was at a constant age or weight. For the production system studied, Angus breed average IMF% EBV level was associated with MSA-scale marbling scores of 1.6 and 1.5, and IMF% levels of 4.6 and 3.9 in 'fast' and 'slow' grown steers (0.71 and 0.48 kg/d, respectively). The ability of the sire IMF% EBV to explain differences among individual steers was low but in line with expectation. The same expectation limits how effective any EBV can be in sorting individual animals of a breed for a management or marketing purpose.

Original language	English
Title of host publication	Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Editors	Alex Safari, Bill Pattie, Barrie Restall
Place of Publication	Armidale, Australia
Publisher	Association for the Advancement of Animal Breeding and Genetics (AAABG)
Pages	484-487
Volume	18
ISBN (Print)	9780646521039
Publication status	Published - 2009
Event	AAABG 2009: 18th Conference of the Association for the Advancement of Animal Breeding and Genetics - Barossa Valley, Australia Duration: 27 Sept 2009 → 2 Oct 2009

Conference

Conference	AAABG 2009: 18th Conference of the Association for the Advancement of Animal Breeding and Genetics
City	Barossa Valley, Australia
Period	27/09/09 → 2/10/09

Keywords

Animal Breeding

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https://hdl.handle.net/1959.11/5246

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Barwick, S., Johnston, D., Wolcott, M. L., Wilkins, J. F., & McKiernan, W. A. (2009). Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny. In A. Safari, B. Pattie, & B. Restall (Eds.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics (Vol. 18, pp. 484-487). Association for the Advancement of Animal Breeding and Genetics (AAABG). https://hdl.handle.net/1959.11/5246

Barwick, Stephen ; Johnston, David ; Wolcott, Matthew Lee et al. / Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny. Proceedings of the Association for the Advancement of Animal Breeding and Genetics. editor / Alex Safari ; Bill Pattie ; Barrie Restall. Vol. 18 Armidale, Australia : Association for the Advancement of Animal Breeding and Genetics (AAABG), 2009. pp. 484-487

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title = "Evaluation of the Angus BREEDPLAN IMF\% EBV in 100d-fed Angus x Hereford steer progeny",

abstract = "The Angus BREEDPLAN IMF\% (intramuscular fat \%) EBV was evaluated in 320 100d-fed Angus x Hereford steer progeny of 25 sires. Results showed using the EBV to select among sires would significantly increase marbling scores and IMF\%, and that this was unaffected by growth regime to feedlot entry or by whether slaughter was at a constant age or weight. For the production system studied, Angus breed average IMF\% EBV level was associated with MSA-scale marbling scores of 1.6 and 1.5, and IMF\% levels of 4.6 and 3.9 in 'fast' and 'slow' grown steers (0.71 and 0.48 kg/d, respectively). The ability of the sire IMF\% EBV to explain differences among individual steers was low but in line with expectation. The same expectation limits how effective any EBV can be in sorting individual animals of a breed for a management or marketing purpose.",

keywords = "Animal Breeding",

author = "Stephen Barwick and David Johnston and Wolcott, \{Matthew Lee\} and Wilkins, \{J F\} and McKiernan, \{W A\}",

year = "2009",

language = "English",

isbn = "9780646521039",

volume = "18",

pages = "484--487",

editor = "Alex Safari and Bill Pattie and Barrie Restall",

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 2009: 18th Conference of the Association for the Advancement of Animal Breeding and Genetics ; Conference date: 27-09-2009 Through 02-10-2009",

}

Barwick, S, Johnston, D, Wolcott, ML, Wilkins, JF & McKiernan, WA 2009, Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny. in A Safari, B Pattie & B Restall (eds), Proceedings of the Association for the Advancement of Animal Breeding and Genetics. vol. 18, Association for the Advancement of Animal Breeding and Genetics (AAABG), Armidale, Australia, pp. 484-487, AAABG 2009: 18th Conference of the Association for the Advancement of Animal Breeding and Genetics, Barossa Valley, Australia, 27/09/09. <https://hdl.handle.net/1959.11/5246>

Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny. / Barwick, Stephen; Johnston, David; Wolcott, Matthew Lee et al.
Proceedings of the Association for the Advancement of Animal Breeding and Genetics. ed. / Alex Safari; Bill Pattie; Barrie Restall. Vol. 18 Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG), 2009. p. 484-487.

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

TY - GEN

T1 - Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny

AU - Barwick, Stephen

AU - Johnston, David

AU - Wolcott, Matthew Lee

AU - Wilkins, J F

AU - McKiernan, W A

PY - 2009

Y1 - 2009

N2 - The Angus BREEDPLAN IMF% (intramuscular fat %) EBV was evaluated in 320 100d-fed Angus x Hereford steer progeny of 25 sires. Results showed using the EBV to select among sires would significantly increase marbling scores and IMF%, and that this was unaffected by growth regime to feedlot entry or by whether slaughter was at a constant age or weight. For the production system studied, Angus breed average IMF% EBV level was associated with MSA-scale marbling scores of 1.6 and 1.5, and IMF% levels of 4.6 and 3.9 in 'fast' and 'slow' grown steers (0.71 and 0.48 kg/d, respectively). The ability of the sire IMF% EBV to explain differences among individual steers was low but in line with expectation. The same expectation limits how effective any EBV can be in sorting individual animals of a breed for a management or marketing purpose.

AB - The Angus BREEDPLAN IMF% (intramuscular fat %) EBV was evaluated in 320 100d-fed Angus x Hereford steer progeny of 25 sires. Results showed using the EBV to select among sires would significantly increase marbling scores and IMF%, and that this was unaffected by growth regime to feedlot entry or by whether slaughter was at a constant age or weight. For the production system studied, Angus breed average IMF% EBV level was associated with MSA-scale marbling scores of 1.6 and 1.5, and IMF% levels of 4.6 and 3.9 in 'fast' and 'slow' grown steers (0.71 and 0.48 kg/d, respectively). The ability of the sire IMF% EBV to explain differences among individual steers was low but in line with expectation. The same expectation limits how effective any EBV can be in sorting individual animals of a breed for a management or marketing purpose.

KW - Animal Breeding

UR - http://trove.nla.gov.au/work/36420775

UR - http://aaabg.org/aaabg18/

UR - http://www.aaabg.org/proceedings18/files/barwick484.pdf

M3 - Conference contribution

SN - 9780646521039

VL - 18

SP - 484

EP - 487

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

A2 - Safari, Alex

A2 - Pattie, Bill

A2 - Restall, Barrie

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

CY - Armidale, Australia

T2 - AAABG 2009: 18th Conference of the Association for the Advancement of Animal Breeding and Genetics

Y2 - 27 September 2009 through 2 October 2009

ER -

Barwick S, Johnston D, Wolcott ML, Wilkins JF, McKiernan WA. Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny. In Safari A, Pattie B, Restall B, editors, Proceedings of the Association for the Advancement of Animal Breeding and Genetics. Vol. 18. Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG). 2009. p. 484-487

Evaluation of the Angus BREEDPLAN IMF% EBV in 100d-fed Angus x Hereford steer progeny

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