ArticleAnimal bioscience2026
Exploring the breed-specific variations in meat quality attributes and gene expression patterns associated with tenderness, intramuscular fat, and fatty acid composition profiles in nellore and deccani sheep breeds of India.
Article in Animal bioscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveThis study aimed to investigate the meat quality attributes and expression patterns of meat quality-regulating genes of two Indian indigenous sheep breeds.
methodsMeat quality indicators and expression patterns of four candidate genes (CAST, CAPN, CEBPB, and SCD), involved in meat tenderness, intramuscular fat (IMF), and fatty acid (FA) composition in the longissimus dorsi muscle of healthy rams of Nellore (n = 4) and Deccani (n = 4) sheep breeds aged between 9 and 12 months, were measured.
resultsThe Nellore breed exhibited lower cooking loss, pH, moisture, and shear force, and higher protein. The Nellore breed exhibited higher crude protein content (p<0.05), while the Deccani breed showed higher crude fat content (p<0.05) and moisture (p<0.05). Further, FA composition varied among breeds, with the Deccani breed exhibiting a healthier profile than the Nellore breed. Relative expression of the CAST, SCD, and CEBPB genes was 5.51, 3.04, and 3.08-fold higher in the Deccani breed (p<0.05) compared to the Nellore breed, respectively. Significant correlations were observed between gene expression and meat quality traits. The IMF and FA composition demonstrated a strong positive correlation (p<0.05) with CEBPB and SCD expression. Moreover, in the Nellore breed, Warner- Bratzler shear force exhibited a strong negative correlation (p<0.05) with CAPN expression.
conclusionThis study demonstrated clear differences between the two sheep breeds evaluated under extensive feeding systems. The Deccani breed offers superior IMF and flavour potential, in addition to a high concentration of beneficial FAs. On the other hand, the Nellore breed's balanced proteolytic activity and leaner composition made it favourable for tenderness.
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