Fig. 2

Effect of dietary L-lysine·H₂SO₄ levels on liver morphology of broiler chickens. a, Broilers fed on basal diets; b, Broilers supplemented with 1% L-lysine·H₂SO₄; c, Broilers supplemented with 4% L-lysine·H₂SO₄; d, Broilers supplemented with 7% L-lysine·H₂SO₄; e, Broilers supplemented with 10% L-lysine·H₂SO₄