Summary
This study investigates whether blood plasma fatty acid profiles, combined with dietary parameters, can serve as non-invasive predictors of beef fatty acid composition using multivariate modelling approaches. Young cattle were managed under pasture-based and hay/concentrate-based feeding systems, and the research demonstrates that dietary antioxidant content and lipid fraction are significant determinants of health-promoting fatty acids in beef. The findings suggest that plasma analysis may offer a viable pre-slaughter tool for estimating nutritional quality traits in beef, with implications for both farm management and product quality assurance.
UK applicability
Although conducted in Italy using Sardinian pasture systems, the methodological approach and findings relating to pasture-based feeding and elevated omega-3 and CLA content in beef are broadly applicable to UK grass-fed beef production systems. UK producers and researchers could draw on this modelling framework to explore non-invasive quality prediction tools within native pasture and upland grazing contexts.
Key measures
Beef muscle fatty acid composition (% of total fatty acids); plasma fatty acid profiles; omega-3 fatty acid content (mg/100g); conjugated linoleic acid (CLA) content; dietary antioxidant markers; multivariate predictive model performance metrics
Outcomes reported
The study measured fatty acid profiles in beef muscle tissue and blood plasma from cattle raised on natural pastures versus hay- and concentrate-based diets, assessing whether plasma lipid profiles and dietary antioxidant content could predict meat fatty acid composition. Key health-relevant lipids including omega-3 fatty acids and conjugated linoleic acid (CLA) were quantified and modelled.
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