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Representation of broilers supplemented with guanidinoacetic acid (GAA) at 0.0, 0.6, and 1.2 g/kg and sampled at d 26 according to their principal component scores for principal component 1 and 2 from the principal component analysis. Broilers can be discriminated visually according to treatment; principal component 1 (27.3%), P < 0.001, and principal component 2 (13.6%), P = 0.004.
