Proteomic Profile of M. longissimus thoracis from Commercial Lambs Reared in Different Forage Systems

Autor: Yangfan Ye, Evelyne Maes, Santanu Deb-Choudhury, Charles A. Hefer, Nicola M. Schreurs, Carolina E. Realini
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Foods, Vol 11, Iss 10, p 1419 (2022)
Druh dokumentu: article
ISSN: 2304-8158
DOI: 10.3390/foods11101419
Popis: This study compared the protein composition of M. longissimus thoracis of lambs from six commercial forage production systems in New Zealand. A total of 286 proteins were identified based on liquid chromatography-tandem mass spectrometry. First, a binomial model showed that different production groups could be distinguished based on abundances of 16 proteins. Second, pair-wise comparisons were performed to search for protein abundance differences in meat due to animal sex (ewe vs. wether), diet (perennial ryegrass vs. chicory), and age (4 vs. 6–8 months old). Greater abundance of some myofibrillar and sarcoplasmic proteins were observed in lamb loins from ewes compared to wethers. Chicory diet and older age at slaughter were associated with meat with lower abundance of some myofibrillar proteins, possibly due to a greater proportion of muscle glycolytic fibres. The proteins that showed significant differences in their abundances due to production factors could be further investigated to understand their influence on meat quality.
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