Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/28765
Title: Comparison of Gene Editing Versus Conventional Breeding to Introgress the Polled Allele into the Tropically Adapted Australian Beef Cattle Population
Contributor(s): Mueller, M L (author); Cole, J B (author); Connors, N K  (author)orcid ; Johnston, D J  (author)orcid ; Randhawa, I A S (author); Van Eenennaam, A L (author)
Publication Date: 2019-11
Open Access: Yes
Handle Link: https://hdl.handle.net/1959.11/28765
Open Access Link: http://www.aaabg.org/aaabghome/fullproc23.phpOpen Access Link
Abstract: Breeding polled (hornless) cattle is a long-term solution to the costly and increasingly unacceptable cattle management practice of dehorning. This study simulated introgression of the POLLED allele into a tropically adapted Australian beef cattle population via conventional breeding or gene editing for multiple polled mating schemes and compared results to baseline selection on genetic merit using the Japan Ox Economic Index ($JapOx) alone, over the course of 20 years. Overall, our simulations show that given the limited number of polled Brahman sires, conventional breeding to increase the POLLED allele frequency will have to occur gradually to prevent major impacts on the rate of genetic gain. Furthermore, this study demonstrates how gene editing could help to ameliorate these impacts if a rapid decrease in HORNED allele frequency is required due to public pressure or legislation requiring the immediate cessation of dehorning practices.
Publication Type: Conference Publication
Conference Details: AAABG 2019: 23rd Conference of the Association for the Advancement of Animal Breeding and Genetics, Armidale, Australia, 27 October-1 November
Source of Publication: Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.23, p. 59-62
Publisher: Association for the Advancement of Animal Breeding and Genetics (AAABG)
Place of Publication: Armidale, Australia
ISSN: 1328-3227
Fields of Research (FoR) 2008: 070201 Animal Breeding
Fields of Research (FoR) 2020: 300305 Animal reproduction and breeding
Socio-Economic Objective (SEO) 2008: 830301 Beef Cattle
Socio-Economic Objective (SEO) 2020: 100401 Beef cattle
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
Publisher/associated links: http://www.aaabg.org/aaabghome/
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Conference Publication
School of Science and Technology

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