Cooking loss in goat meat points to metabolic quality markers

New research in Etawah goats from Indonesia shows why meat quality cannot be reduced to a single pH value or carcass conformation. The team compared six animals selected from a group of 30 because they showed high or low cooking loss. Using RNA sequencing of liver tissue, it identified 332 differentially expressed genes. The focus on the liver is consistent with its central role in lipid, energy and nutrient metabolism—processes that can indirectly influence the water-holding capacity of muscle.

The analyses highlighted pathways linked to muscle-structure development, extracellular space, glycosaminoglycan binding and oxidoreductase activity. The authors identify DLK1, FGF21 and THRSP as potential candidate markers for meat-quality traits. They confirmed the expression direction of several leading genes by qRT-PCR. This is not yet a test for use at animal intake, nor does it guarantee lower cooking loss in a commercial batch: the study relies on a very small number of animals from one specific goat population.

Its practical relevance lies elsewhere. Cooking loss is directly noticeable to foodservice operators and consumers because it affects portion yield, juiciness and consistency in preparation. If future studies confirm these markers in broader populations and under different production conditions, they could help integrate genetic predisposition and quality data into breeding programmes. For the meat chain, the lesson is that a quality specification should connect biology, handling, ageing and culinary use; no isolated indicator fully describes how a product will perform in a pan or on a grill.

The research does not yet prove that selecting for these genes improves commercial quality. It does, however, provide a testable hypothesis: differences in thermal yield may have a measurable metabolic basis before meat reaches the kitchen. That creates a route for breeding decisions to target product-relevant outcomes rather than animal performance alone.