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Understanding the impact of sire lean meat yield breeding value on carcass composition, meat quality, nutrient and mineral content of Australian lamb.

Authors :
Knight MI
Butler KL
Linden NP
Burnett VF
Ball AJ
McDonagh MB
Behrendt R
Source :
Meat science [Meat Sci] 2020 Dec; Vol. 170, pp. 108236. Date of Electronic Publication: 2020 Jul 09.
Publication Year :
2020

Abstract

Advances in genomics and technology measuring body composition are now allowing sheep producers to select directly for increased lean meat yield (LMY) using Australian Sheep Breeding Values (ASBV). This experiment evaluated the impact of sire LMY ASBV on carcass composition, meat quality, nutrient and mineral content for lambs reared at pasture and finished in a feedlot. A 1% unit increase in sire LMY ASBV resulted in progeny that were leaner (0.8%) and had less fat (1.0%) on carcass. There was also a 0.2% reduction in the intramuscular fat content, a 3.2 N increase in meat toughness determined by shear force at day 5 ageing, a reduction in the redness of the fresh meat and a lower iron content. It is concluded that Australian sheep producers will need to incorporate ASBVs for other aspects of meat quality when selecting sires with increased LMY to avoid deterioration in meat quality, nutritional content of lamb and fresh meat colour.<br />Competing Interests: Declaration of Competing Interest The authors declare that they have no competing interests.<br /> (Copyright © 2020. Published by Elsevier Ltd.)

Details

Language :
English
ISSN :
1873-4138
Volume :
170
Database :
MEDLINE
Journal :
Meat science
Publication Type :
Academic Journal
Accession number :
32688223
Full Text :
https://doi.org/10.1016/j.meatsci.2020.108236