Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter

Andrew Swan

Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter

Andrew Swan

Animal Genetics and Breeding Unit

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

Abstract

Yearling fibre diameter profiles from the OFDA2000 instrument were used to derive records on mean and coefficient of variation (CV) of fibre diameter at multiple points in the post-weaning age window, from 20 to 90% of staple profile length. Genetic correlations were calculated between these traits and their yearling equivalents. Results showed that from 50% of the staple profile and higher, post-weaning fibre diameter is genetically the same trait as yearling fibre diameter. Although the derivation of CV of fibre diameter was less accurate, genetic correlations with the yearling expression were greater than 0.9 for all except one percentile point. The expected correlation between post-weaning and yearling fleece weight was also derived, and under simple assumptions it is not unreasonable to expect estimates of genetic correlations greater than 0.9.

Original language	English
Title of host publication	Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Editors	Kim Bunter, Tim Byrne, Hans Daetwyler, Susanne Hermesch, Kathryn Kemper, James Kijas, David Nation, Wayne Pitchford, Suzanne Rowe, Matt Shaffer, Alison van Eenennaam
Place of Publication	Armidale, Australia
Publisher	Association for the Advancement of Animal Breeding and Genetics (AAABG)
Pages	338-341
Volume	21
ISBN (Print)	9780646945545
Publication status	Published - 2015
Event	AAABG 2015: 21st Conference of the Association for the Advancement of Animal Breeding and Genetics - Lorne, Australia Duration: 28 Sept 2015 → 30 Sept 2015

Conference

Conference	AAABG 2015: 21st Conference of the Association for the Advancement of Animal Breeding and Genetics
City	Lorne, Australia
Period	28/09/15 → 30/09/15

Keywords

Animal Breeding

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Swan, A. (2015). Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter. In K. Bunter, T. Byrne, H. Daetwyler, S. Hermesch, K. Kemper, J. Kijas, D. Nation, W. Pitchford, S. Rowe, M. Shaffer, & A. van Eenennaam (Eds.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics (Vol. 21, pp. 338-341). Association for the Advancement of Animal Breeding and Genetics (AAABG). http://www.aaabg.org/aaabghome/AAABG21papers/Swan21338.pdf

Swan, Andrew. / Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter. Proceedings of the Association for the Advancement of Animal Breeding and Genetics. editor / Kim Bunter ; Tim Byrne ; Hans Daetwyler ; Susanne Hermesch ; Kathryn Kemper ; James Kijas ; David Nation ; Wayne Pitchford ; Suzanne Rowe ; Matt Shaffer ; Alison van Eenennaam. Vol. 21 Armidale, Australia : Association for the Advancement of Animal Breeding and Genetics (AAABG), 2015. pp. 338-341

@inproceedings{40f14db6c9924c368359923b9afbb7bc,

title = "Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter",

abstract = "Yearling fibre diameter profiles from the OFDA2000 instrument were used to derive records on mean and coefficient of variation (CV) of fibre diameter at multiple points in the post-weaning age window, from 20 to 90\% of staple profile length. Genetic correlations were calculated between these traits and their yearling equivalents. Results showed that from 50\% of the staple profile and higher, post-weaning fibre diameter is genetically the same trait as yearling fibre diameter. Although the derivation of CV of fibre diameter was less accurate, genetic correlations with the yearling expression were greater than 0.9 for all except one percentile point. The expected correlation between post-weaning and yearling fleece weight was also derived, and under simple assumptions it is not unreasonable to expect estimates of genetic correlations greater than 0.9.",

keywords = "Animal Breeding",

author = "Andrew Swan",

year = "2015",

language = "English",

isbn = "9780646945545",

volume = "21",

pages = "338--341",

editor = "Kim Bunter and Tim Byrne and Hans Daetwyler and Susanne Hermesch and Kathryn Kemper and James Kijas and David Nation and Wayne Pitchford and Suzanne Rowe and Matt Shaffer and \{van Eenennaam\}, Alison",

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 2015: 21st Conference of the Association for the Advancement of Animal Breeding and Genetics ; Conference date: 28-09-2015 Through 30-09-2015",

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Swan, A 2015, Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter. in K Bunter, T Byrne, H Daetwyler, S Hermesch, K Kemper, J Kijas, D Nation, W Pitchford, S Rowe, M Shaffer & A van Eenennaam (eds), Proceedings of the Association for the Advancement of Animal Breeding and Genetics. vol. 21, Association for the Advancement of Animal Breeding and Genetics (AAABG), Armidale, Australia, pp. 338-341, AAABG 2015: 21st Conference of the Association for the Advancement of Animal Breeding and Genetics, Lorne, Australia, 28/09/15. <http://www.aaabg.org/aaabghome/AAABG21papers/Swan21338.pdf>

Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter. / Swan, Andrew.
Proceedings of the Association for the Advancement of Animal Breeding and Genetics. ed. / Kim Bunter; Tim Byrne; Hans Daetwyler; Susanne Hermesch; Kathryn Kemper; James Kijas; David Nation; Wayne Pitchford; Suzanne Rowe; Matt Shaffer; Alison van Eenennaam. Vol. 21 Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG), 2015. p. 338-341.

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

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AB - Yearling fibre diameter profiles from the OFDA2000 instrument were used to derive records on mean and coefficient of variation (CV) of fibre diameter at multiple points in the post-weaning age window, from 20 to 90% of staple profile length. Genetic correlations were calculated between these traits and their yearling equivalents. Results showed that from 50% of the staple profile and higher, post-weaning fibre diameter is genetically the same trait as yearling fibre diameter. Although the derivation of CV of fibre diameter was less accurate, genetic correlations with the yearling expression were greater than 0.9 for all except one percentile point. The expected correlation between post-weaning and yearling fleece weight was also derived, and under simple assumptions it is not unreasonable to expect estimates of genetic correlations greater than 0.9.

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Swan A. Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter. In Bunter K, Byrne T, Daetwyler H, Hermesch S, Kemper K, Kijas J, Nation D, Pitchford W, Rowe S, Shaffer M, van Eenennaam A, editors, Proceedings of the Association for the Advancement of Animal Breeding and Genetics. Vol. 21. Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG). 2015. p. 338-341

Fibre Diameter Measured in the Post-Weaning Age Window is Genetically the Same Trait as Yearling Fibre Diameter

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