Fig. 6From: Gut microbiota intervention attenuates thermogenesis in broilers exposed to high temperature through modulation of the hypothalamic 5-HT pathwayEffect of gut microbiota intervention on HPA/HPT axis activation under different ambient temperatures. A Corticotropin-releasing hormone mRNA expression level in the hypothalamus. B Thyrotropin-releasing hormone mRNA expression level in the hypothalamus. C Corticosterone concentration in serum. D T3 concentration in serum. E T4 concentration in serum. F T3/T4 ratio in serum. Data are expressed as mean ± SEM (n = 6 or 8). *P < 0.05, **P < 0.01, ***P < 0.001Back to article page