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The effects of a high-fat diet and osteocalcin on glucose tolerance and insulin sensitivity outcomes in aged hens. (A) The outcomes of glucose tolerance test. (B) The outcomes of the insulin tolerance test. (C) Plasma insulin concentrations. a, b Mean ± SEM with different small letter differ significantly (P < 0.05, n = 10). Abbreviations: HFD + OCN, high-fat diet + osteocalcin; HFD + V, high-fat diet + vehicle; ND + V, normal diet + vehicle.
