Please use this identifier to cite or link to this item:
|Title:||Economic weights for performance and survival traits of growing pigs||Contributor(s):||Hermesch, Susanne (author) ; Ludemann, C I (author); Amer, Peter (author)||Publication Date:||2014||DOI:||10.2527/jas.2014-7944||Handle Link:||https://hdl.handle.net/1959.11/16795||Abstract:||The objective of this paper was to derive economic weights for performance and survival traits of growing pigs including feed conversion ratio (FCR), daily feed intake (DFI), ADG, postweaning survival of the growing pig (SG), and carcass fat depth at the P2 site (CFD). An independent model was developed for each trait to derive economic values directly based on a typical Australian production system. This flexible approach may be used to customize economic values for different production systems and alternative trait combinations in breeding objectives. Discounted genetic expressions were used as a means of taking into account differences in frequency and timing of expression of traits to obtain economic weights. Economic values for SG were derived based on a cost-saving and a lost-revenue approach. The correct formulation of the economic value of ADG depends on how feed cost is included in the breeding objective. If FCR is defined as a breeding objective trait, then savings in feed costs through earlier slaughter should not be counted in the economic value of ADG. In contrast, if DFI is included in the breeding objective instead of FCR, then feed-cost savings through earlier slaughter need to be attributed to the economic value for ADG, as a benefit from faster ADG. The paper also demonstrates that economic weightings in indexes for FCR can potentially be overestimated by 70% when it is assumed that DFI or FCR records taken from a limited duration test period reflect the corresponding trait over the full lifetime of the growing pig destined for slaughter. Postweaning survival of the growing pig was the most important breeding objective trait of growing pigs. The relative importance of each breeding objective trait in a sire-line index based on the genetic SD of each trait was 44.5, 27.0, 17.4, and 11.1% for SG, FCR, ADG, and CFD, respectively. Further studies to better clarify the extent of genetic variation that exists in SG under nucleus-farm and commercial-farm conditions are warranted, given the high economic importance of this survival trait of growing pigs.||Publication Type:||Journal Article||Source of Publication:||Journal of Animal Science, 92(12), p. 5358-5366||Publisher:||American Society of Animal Science||Place of Publication:||United States of America||ISSN:||1525-3163
|Field of Research (FoR) 2008:||070201 Animal Breeding||Field 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:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 164|
|Appears in Collections:||Animal Genetics and Breeding Unit (AGBU)|
Files in This Item:
checked on Oct 18, 2021
checked on May 2, 2019
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.