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. 2021 Oct 21;12:733134. doi: 10.3389/fphys.2021.733134

Figure 2.

Figure 2

Effect of HS on intestinal morphology of JF (a,b), ACRB (c,d), 95RAN (e,f), and MRB (g,h) birds. Tissue from the jejunum of TN (a,c,e,g) and HS (b,d,f,h) birds were processed and stained for histology. Data are mean ± SEM (n = 2/group). VH (i), CD (j), and VH:CD ratio (k) were measured and analyzed. Different letters indicate the significant difference at P < 0.05. VH, villus height; CD, crypt depth; HS, heat stress; TN, thermoneutral; JF, jungle fowl; ACRB, Athens Canadian Random Bred; 95RAN, 1995 random bred; MRB, modern random bred.