Please use this identifier to cite or link to this item:
|Title:||Molecular value predictions: Associations with beef quality, carcass, production, behavior and efficiency phenotypes in Brahman cattle||Contributor(s):||Greenwood, Paul (author); Cafe, Linda (author) ; McIntyre, Brooke Louise (author); Geesink, Geert (author); Thompson, John (author); Polkinghorne, R (author); Pethick, D W (author); Robinson, Dorothy L (author)||Publication Date:||2013||DOI:||10.2527/jas.2013-6960||Handle Link:||https://hdl.handle.net/1959.11/15108||Abstract:||Data from 2 previously published experiments, New South Wales (NSW; n = 161) and Western Australia (WA; n = 135), were used to test molecular value predictions (MVP), generated from commercially available gene markers, on economically important traits of 'Bos indicus' (Brahman) cattle. Favorable tenderness MVP scores were associated with reduced shear force values of strip loin (LM) steaks aged 7 d from Achilles-hung carcasses (P ≤ 0.06), as well as steaks aged 1 (P ≤ 0.08) or 7 d (P ≤ 0.07) from carcasses hung from the pelvis (tenderstretch). Favorable tenderness MVP scores were also associated with improved consumer tenderness ratings for strip loin steaks aged 7 d and either Achilles hung (P ≤ 0.006) or tenderstretched (P ≤ 0.07). Similar results were observed in NSW for rump (top butt; gluteus medius) steaks, with favorable tenderness MVP scores associated with more tender (P = 0.006) and acceptable (P = 0.008) beef. Favorable marbling MVP scores were associated with improved (P ≤ 0.021) marbling scores and intramuscular fat (IMF) content in the NSW experiment, despite low variation in marbling in the Brahman cattle. For the WA experiment, however, there were no (P ≥ 0.71) relationships between marbling MVP and marbling scores or IMF content. Although residual (net) feed intake (RFI) was not associated (P = 0.63) with the RFI (feed efficiency) MVP, the RFI MVP was adversely associated with LM tenderness and acceptability of 7-d-aged Achilles-hung carcasses in NSW (P ≤ 0.031) and WA (P ≤ 0.037). Some other relationships and trends were noted between the MVP and the other traits, but few reached statistical significance, and none were evident in both experiments. Results from this study provide evidence to support the use of the tenderness MVP. The value of the marbling MVP, which was associated with marbling in only 1 herd, warrants further evaluation; however, there appears to be no evidence to support use of the RFI MVP in Brahman cattle.||Publication Type:||Journal Article||Source of Publication:||Journal of Animal Science, 91(12), p. 5912-5925||Publisher:||American Society of Animal Science||Place of Publication:||United States of America||ISSN:||0021-8812
|Field of Research (FOR):||070299 Animal Production not elsewhere classified||Socio-Economic Outcome Codes:||830599 Primary Animal Products not elsewhere classified||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 419
|Appears in Collections:||Journal Article|
Files in This Item:
checked on Nov 26, 2018
checked on May 2, 2019
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.