Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle

B J Walmsley

doi:10.3920/978-90-8686-940-4_482

Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle

B J Walmsley

Animal Genetics and Breeding Unit

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

Abstract

The impacts of using partial (sub) indexes on expected greenhouse gas emissions (GHG) from a self-replacing cow herd producing 120-day grain-finished progeny is compared to selection with a full self-replacing BreedObject index. Sub-indexes only containing post-weaning traits of the slaughter progeny (terminal) and a maternal sub-index were developed using BreedObject. The terminal sub-index is expected to increase mature cow weight (MCW) and milk, resulting in increases in GHG emissions. In contrast, the full self-replacing index is expected to produce slight reductions in MCW and negligible change in milk, which results in decreases in GHG emissions of the cow herd and young animal at pasture. The maternal sub-index is expected to result in larger GHG emission reductions due to larger decreases in MCW as well as negligible change in milk. When constructing partial indexes, the implications on GHG emissions of the cow herd and progeny need to be carefully considered.

Original language	English
Title of host publication	Proceedings of the 12th World Congress on Genetics Applied to Livestock Production
Editors	Veerkamp R F and de Haas, Y
Place of Publication	The Netherlands
Publisher	Wageningen Academic Publishers
Pages	2003-2006
Volume	12
ISBN (Print)	978-90-8686-940-4
DOIs	https://doi.org/10.3920/978-90-8686-940-4_482
Publication status	Published - 31 Jul 2022
Event	12th World Congress on Genetics Applied to Livestock Production - De Doelen International Conference Center Rotterdam Schouwburgplein 50 Rotterdam, The Netherlands, Rotterdam, Netherlands Duration: 3 Jul 2022 → 8 Jul 2022

Conference

Conference	12th World Congress on Genetics Applied to Livestock Production
City	Rotterdam, Netherlands
Period	3/07/22 → 8/07/22

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https://hdl.handle.net/1959.11/56411

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@inproceedings{15336d8d007944a38982184aefc044d1,

title = "Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle",

abstract = "The impacts of using partial (sub) indexes on expected greenhouse gas emissions (GHG) from a self-replacing cow herd producing 120-day grain-finished progeny is compared to selection with a full self-replacing BreedObject index. Sub-indexes only containing post-weaning traits of the slaughter progeny (terminal) and a maternal sub-index were developed using BreedObject. The terminal sub-index is expected to increase mature cow weight (MCW) and milk, resulting in increases in GHG emissions. In contrast, the full self-replacing index is expected to produce slight reductions in MCW and negligible change in milk, which results in decreases in GHG emissions of the cow herd and young animal at pasture. The maternal sub-index is expected to result in larger GHG emission reductions due to larger decreases in MCW as well as negligible change in milk. When constructing partial indexes, the implications on GHG emissions of the cow herd and progeny need to be carefully considered.",

author = "Walmsley, \{B J\}",

year = "2022",

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editor = "Haas, \{Veerkamp R F and de\} and Y",

booktitle = "Proceedings of the 12th World Congress on Genetics Applied to Livestock Production",

publisher = "Wageningen Academic Publishers",

note = "12th World Congress on Genetics Applied to Livestock Production ; Conference date: 03-07-2022 Through 08-07-2022",

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Walmsley, BJ 2022, Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle. in VRFAD Haas & Y (eds), Proceedings of the 12th World Congress on Genetics Applied to Livestock Production. vol. 12, 482, Wageningen Academic Publishers, The Netherlands, pp. 2003-2006, 12th World Congress on Genetics Applied to Livestock Production, Rotterdam, Netherlands, 3/07/22. https://doi.org/10.3920/978-90-8686-940-4_482

Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle. / Walmsley, B J.
Proceedings of the 12th World Congress on Genetics Applied to Livestock Production. ed. / Veerkamp R F and de Haas; Y. Vol. 12 The Netherlands: Wageningen Academic Publishers, 2022. p. 2003-2006 482.

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

TY - GEN

T1 - Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle

AU - Walmsley, B J

PY - 2022/7/31

Y1 - 2022/7/31

N2 - The impacts of using partial (sub) indexes on expected greenhouse gas emissions (GHG) from a self-replacing cow herd producing 120-day grain-finished progeny is compared to selection with a full self-replacing BreedObject index. Sub-indexes only containing post-weaning traits of the slaughter progeny (terminal) and a maternal sub-index were developed using BreedObject. The terminal sub-index is expected to increase mature cow weight (MCW) and milk, resulting in increases in GHG emissions. In contrast, the full self-replacing index is expected to produce slight reductions in MCW and negligible change in milk, which results in decreases in GHG emissions of the cow herd and young animal at pasture. The maternal sub-index is expected to result in larger GHG emission reductions due to larger decreases in MCW as well as negligible change in milk. When constructing partial indexes, the implications on GHG emissions of the cow herd and progeny need to be carefully considered.

AB - The impacts of using partial (sub) indexes on expected greenhouse gas emissions (GHG) from a self-replacing cow herd producing 120-day grain-finished progeny is compared to selection with a full self-replacing BreedObject index. Sub-indexes only containing post-weaning traits of the slaughter progeny (terminal) and a maternal sub-index were developed using BreedObject. The terminal sub-index is expected to increase mature cow weight (MCW) and milk, resulting in increases in GHG emissions. In contrast, the full self-replacing index is expected to produce slight reductions in MCW and negligible change in milk, which results in decreases in GHG emissions of the cow herd and young animal at pasture. The maternal sub-index is expected to result in larger GHG emission reductions due to larger decreases in MCW as well as negligible change in milk. When constructing partial indexes, the implications on GHG emissions of the cow herd and progeny need to be carefully considered.

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DO - 10.3920/978-90-8686-940-4_482

M3 - Conference contribution

SN - 978-90-8686-940-4

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SP - 2003

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BT - Proceedings of the 12th World Congress on Genetics Applied to Livestock Production

A2 - Haas, Veerkamp R F and de

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T2 - 12th World Congress on Genetics Applied to Livestock Production

Y2 - 3 July 2022 through 8 July 2022

ER -

Consequences of using different economic selection index methods on greenhouse gas emissions in beef cattle

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