Fig. 7From: Alterations in intestinal microbiota composition coincide with impaired intestinal morphology and dysfunctional ileal immune response in growing-finishing pigs under constant chronic heat stressThe Spearman correlation analysis between significantly differential microbes and the performance (A), small intestinal morphological injuries indicators (B), and ileal immune response parameters (C) under constant chronic HS. The heatmap of the correlation coefficient, the red represents positive correlation and the blue represents negative correlation, respectively (* presented P < 0.05, ** presented P < 0.01). Abbreviations: ADG, average daily gain; ADFI, average daily feed intake; V/C, the ratio of villus height to crypt depth; PG1–5, protegrin 1–5; pBD2, porcine beta-defensin 2; TLR-2, toll-like receptor 2; TLR-4, toll-like receptor 4; TNF-α, tumor necrosis factor-α; IL-6, interleukin- 6; IL-8, interleukin- 8Back to article page