Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle

Stephen Barwick; David Johnston; R G Holroyd; J R W Walkley; H M Burrow

Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle

Stephen Barwick, David Johnston, R G Holroyd, J R W Walkley, H M Burrow

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

Abstract

Female and male measures with potential to be practical, early-in-life genetic indicators of female reproduction in Brahmans were chosen from earlier reports and compared, along with genomic measures, for multi-trait use to improve Brahman lifetime annual weaning rate ('LAWR'). Results suggested substantial genetic gains in 'LAWR' may be possible in 10 years using these measures, but need confirming in other data. Female hip height and coat score and male preputial eversion and liveweight were measures that could warrant wider recording for 'LAWR' improvement. Recording of pregnancy test outcomes from matings 1 and 2 should also be encouraged. A genomic EBV in combination with other measures added to the gain in 'LAWR', but needed an accuracy approaching 60% to be the most important contributor to gains in the combinations of measures studied.

Original language	English
Title of host publication	Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Editors	Nicolas Lopez Villalobos
Place of Publication	Armidale, Australia
Publisher	Association for the Advancement of Animal Breeding and Genetics (AAABG)
Pages	307-310
Volume	20
ISBN (Print)	9780473260569
Publication status	Published - 2013
Event	AAABG 2013: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action - Napier, New Zealand Duration: 20 Oct 2013 → 23 Oct 2013

Conference

Conference	AAABG 2013: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action
City	Napier, New Zealand
Period	20/10/13 → 23/10/13

Keywords

Animal Breeding

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https://hdl.handle.net/1959.11/14339

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Barwick, S., Johnston, D., Holroyd, R. G., Walkley, J. R. W., & Burrow, H. M. (2013). Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle. In N. Lopez Villalobos (Ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics (Vol. 20, pp. 307-310). Association for the Advancement of Animal Breeding and Genetics (AAABG). https://hdl.handle.net/1959.11/14339

Barwick, Stephen ; Johnston, David ; Holroyd, R G et al. / Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle. Proceedings of the Association for the Advancement of Animal Breeding and Genetics. editor / Nicolas Lopez Villalobos. Vol. 20 Armidale, Australia : Association for the Advancement of Animal Breeding and Genetics (AAABG), 2013. pp. 307-310

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title = "Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle",

abstract = "Female and male measures with potential to be practical, early-in-life genetic indicators of female reproduction in Brahmans were chosen from earlier reports and compared, along with genomic measures, for multi-trait use to improve Brahman lifetime annual weaning rate ('LAWR'). Results suggested substantial genetic gains in 'LAWR' may be possible in 10 years using these measures, but need confirming in other data. Female hip height and coat score and male preputial eversion and liveweight were measures that could warrant wider recording for 'LAWR' improvement. Recording of pregnancy test outcomes from matings 1 and 2 should also be encouraged. A genomic EBV in combination with other measures added to the gain in 'LAWR', but needed an accuracy approaching 60\% to be the most important contributor to gains in the combinations of measures studied.",

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author = "Stephen Barwick and David Johnston and Holroyd, \{R G\} and Walkley, \{J R W\} and Burrow, \{H M\}",

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

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

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Barwick, S, Johnston, D, Holroyd, RG, Walkley, JRW & Burrow, HM 2013, Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle. in N Lopez Villalobos (ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics. vol. 20, Association for the Advancement of Animal Breeding and Genetics (AAABG), Armidale, Australia, pp. 307-310, AAABG 2013: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action, Napier, New Zealand, 20/10/13. <https://hdl.handle.net/1959.11/14339>

Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle. / Barwick, Stephen; Johnston, David; Holroyd, R G et al.
Proceedings of the Association for the Advancement of Animal Breeding and Genetics. ed. / Nicolas Lopez Villalobos. Vol. 20 Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG), 2013. p. 307-310.

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

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AB - Female and male measures with potential to be practical, early-in-life genetic indicators of female reproduction in Brahmans were chosen from earlier reports and compared, along with genomic measures, for multi-trait use to improve Brahman lifetime annual weaning rate ('LAWR'). Results suggested substantial genetic gains in 'LAWR' may be possible in 10 years using these measures, but need confirming in other data. Female hip height and coat score and male preputial eversion and liveweight were measures that could warrant wider recording for 'LAWR' improvement. Recording of pregnancy test outcomes from matings 1 and 2 should also be encouraged. A genomic EBV in combination with other measures added to the gain in 'LAWR', but needed an accuracy approaching 60% to be the most important contributor to gains in the combinations of measures studied.

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Barwick S, Johnston D, Holroyd RG, Walkley JRW, Burrow HM. Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle. In Lopez Villalobos N, editor, Proceedings of the Association for the Advancement of Animal Breeding and Genetics. Vol. 20. Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG). 2013. p. 307-310

Female, Male and Genomic Measures for Use in Genetic Selection to Improve Lifetime Weaning Rate of Brahman Cattle

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