Please use this identifier to cite or link to this item:
|Title:||The Genetic Relationships Between Intramuscular Fat Measured in Four Different Lamb Muscles||Contributor(s):||Guy, S Z Y (author) ; Walkom, S F (author) ; Anderson, F (author); Gardner, G E (author); McGilchrist, P (author) ; Brown, D J (author)||Publication Date:||2019||Open Access:||Yes||Handle Link:||https://hdl.handle.net/1959.11/28676||Open Access Link:||http://www.aaabg.org/aaabghome/fullproc23.php||Fields of Research (FoR) 2008:||070201 Animal Breeding||Fields of Research (FoR) 2020:||300305 Animal reproduction and breeding||Socio-Economic Objective (SEO) 2008:||830310 Sheep - Meat||Socio-Economic Objective (SEO) 2020:||100412 Sheep for meat||Abstract:||Intramuscular fat percentage (IMF) is a key determinant of eating quality in red meat. Measures of IMF from the short loin muscle (M. longissimus lumborum, LL) are currently used as selection criteria in Sheep Genetics eating quality indexes. To understand how routine selection on the short loin impacts IMF across the whole carcase, this pilot study examines IMF data collected from three additional muscles from the fore quarter (Muscularis supraspinatus, SS) and hind quarter (Musculus semimembranosus, SM; Muscularis semitendinosus, ST) of the carcase. The heritability of IMF was relatively high and consistent across the SS, LL and ST muscles, and lower in the SM. The genetic correlation estimate between IMF measured in the different muscles were all positive, ranging from 0.49 ± 0.13 to 0.97 ± 0.10. Therefore, IMF measurements from the short loin, which is currently being used as selection criteria for eating quality, will be a useful indicator for IMF across muscles from other parts of the carcase. Further, the genetic selection to increase IMF in one muscle should result in an increase in IMF in the other muscles, although at differing rates.||Publication Type:||Conference Publication||Conference Details:||23rd Conference of the Association for the Advancement of Animal Breeding and Genetics, Armidale, NSW, 27 October-1 November||Source of Publication:||Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.23, p. 314-317||Publisher:||AAABG: Association for the Advancement of Animal Breeding and Genetics||Place of Publication:||Armidale, Australia||ISSN:||1328-3227||Peer Reviewed:||Yes||HERDC Category Description:||E1 Refereed Scholarly Conference Publication||Other Links:||http://www.aaabg.org/aaabghome/|
|Appears in Collections:||Animal Genetics and Breeding Unit (AGBU)|
School of Environmental and Rural Science
Files in This Item:
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.