Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/28712
Title: Genetic Parameter Estimates for Pre- and Post-weaning Piglet Mortality
Contributor(s): Harper, J  (author); Bunter, K L  (author)orcid ; Hermesch, Susanne  (author)orcid 
Publication Date: 2019
Open Access: Yes
Handle Link: https://hdl.handle.net/1959.11/28712
Open Access Link: http://www.aaabg.org/aaabghome/fullproc23.phpOpen Access Link
Abstract: Alternative models for genetic evaluation of pre- and post-weaning mortality traits were investigated. For pre-weaning mortality, the best model accounted for direct piglet effects, common litter effects of both the nurse sow and biological dam, repeated records of the nurse sow and the maternal nurse sow genetic effects. For post-weaning mortality, the most parsimonious model included only direct piglet effects and the common litter effects of both the nurse sow and biological dam. After accounting for systematic effects, genes of the piglet contribute to both pre- and post-weaning mortality (direct h² = 0.02 ± 0.002 for pre- and post- weaning), whereas the nurse maternal genes only contribute to pre-weaning (maternal m² = 0.01 ± 0.002). While heritabilities were low, there is potential for genetic improvement of both pre- and post-weaning mortality traits.
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. 159-162
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: 830308 Pigs
Socio-Economic Objective (SEO) 2020: 100410 Pigs
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

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