Fig. 4

Effect of dietary Se-enriched yeast or lactobacilli on ileal morphology of laying hens. A Hematoxylin and erosion (H&E) staining of ileum sections, scale bar: 100 μm. B Ileal morphological parameters inclusive of villus height, crypt depth and villus height-to-crypt depth ratio. Data are mean ± SD (n = 8). ^a,bBars with no common letters differ significantly (P < 0.05). SeD The basal diet without Se supplementation, SeY15 or SeL15 The diet supplemented with 1.5 mg/kg Se from Se-enriched yeast or Se-enriched lactobacilli