期刊
MEAT SCIENCE
卷 89, 期 2, 页码 125-132出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2011.03.014
关键词
Meat eating quality; Meat quality; Muscularity; Texel; Lambs; QTL
资金
- BBSRC [BB/E018963/1]
- Defra through LINK [LK0670]
- Scottish Government
- EBLEX
- HCC
- QMS
- LMCNI
- Pfizer Animal Genetics
- AgResearch New Zealand, lnnovis Genetic Ltd
- Welsh Country Foods Ltd
- EplusV/Germany
- ASDA stores
- Scottish Association of Meat Wholesalers
- Suffolk Sire Referencing Scheme Ltd
- British Texel Sheep Society Ltd
- Charollais Sire Reference Scheme
- BBSRC [BB/E01903X/2, BB/E018963/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/E01903X/2, BB/E018963/1] Funding Source: researchfish
Texel Muscling QTL (TM-QTL) increases loin muscling in lambs inheriting it from their sire only. This study investigated TM-QTL effects on meat quality in 209 Texel lambs that were CT-scanned then slaughtered at 20 weeks (carcasses aged for -1 week). Loin meat quality traits included: CT-measured muscle density (predicting intramuscular fat); mechanical tenderness using Volodkevich-type jaws or MIRINZ tenderometer; intramuscular fat: sensory eating quality (sub-sample of 40 lambs). Volodkevich tenderness was also measured in the leg (Vastis lateralis). TM-QTL genotypes were determined, giving 40 non-carriers (+/+), 70 heterozygotes-53 inheriting TM-QTL from the sire (TM/+) and 17 from the dam (+/TM), 34 homozygote TM-QTL lambs (TM/TM) and 65 uncertain. Multiple regression identified no genotype effects on meat quality. For MIRINZ-measured loin tenderness only, contrasts revealed a significant additive effect of TM-QTL (1.27 kgF difference between homozygotes). However, the taste panel identified no significant differences between +/+ and TM/TM lambs. Results show little evidence of TM-QTL affecting meat quality. (C) 2011 Elsevier Ltd. All rights reserved.
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