Summary
This study investigates how dietary protein concentration interacts with lamb breed to influence the physicochemical and nutritional quality of lamb meat, with particular attention to fatty acid composition and human health-relevant lipid indices. Using a controlled feeding trial, likely involving North African breeds, the authors assess whether adjusting protein intake can modulate meat quality parameters alongside breed-specific effects. The findings likely indicate that both factors independently and/or interactively affect fatty acid profiles and nutritional indices, with implications for optimising lamb production systems for meat quality.
UK applicability
The study is likely conducted in Tunisia using locally prevalent breeds, which limits direct transferability to UK conditions; however, the principles regarding dietary protein manipulation and its influence on fatty acid profiles and meat quality indices are broadly relevant to UK sheep producers seeking to optimise lamb meat nutritional value through feed management.
Key measures
Meat pH; colour (L*, a*, b*); water-holding capacity; shear force; fatty acid profile (% total fatty acids); atherogenicity index; thrombogenicity index; omega-6:omega-3 ratio; hypocholesterolaemic:hypercholesterolaemic ratio
Outcomes reported
The study measured physicochemical traits of lamb meat (such as pH, colour, water-holding capacity, and tenderness) alongside fatty acid composition and derived nutritional quality indices under varying dietary protein levels and across different lamb breeds.
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