Changes in the cecal microbiota of laying hens during heat stress is mainly associated with reduced feed intake

Effects of acute heat stress on intestinal microbiota in grow‐finishing pigs, and associations with feed intake and serum profile

“…Sixty per cent restricted feeding for 7 days modified the profile of the faecal microbiota in pigs (Le Floc'h et al ). Xing confirmed the closely associations between alterations of intestinal microbial communities with FI reduction in laying hens under 4‐week high cyclic temperature (Xing et al ). In the current study, the FI of HS pigs decreased to 54% compared to TN group Unlike previous research, no significant changes in diversity and structure was observed between PF and TN group in this study.…”

“…HS has been reported to affect the microbial structure and composition in intestines of animals within 1 week to several months (Wang et al ; He et al ; Le Sciellour et al ; Xing et al ; Zhu et al ). We observed decreased diversity and altered atructure in faecal microbiota after 24 h HS.…”

“…Heat stress (HS) adversely affects the growth performance of livestock, causing FI reduction and intestinal damage. It has been reported that HS can alter the intestinal microbiota of broilers (Wang et al ), laying hens (Xing et al ; Zhu et al ), ducks (He et al ) and growing pigs (Le Sciellour et al ) within 1 week to several months. The changing of intestinal microbiota under HS is a dynamic process which is related to heat load and duration, and little attention has been paid to the alterations at acute phase such as within several hours.…”

Heat stress on microbiota composition, barrier integrity, and nutrient transport in gut, production performance, and its amelioration in farm animals

“…Relatedly, specific richness was greater in hot climatic conditions than in the temperate climatic conditions in feces of pigs [20]. In other studies, HS did not show alterations of alpha-diversity such as Shannon index of the gut microbiota in cecum of laying hens [21], cecum of broiler chickens except phylogenetic diversity [22], ileum and jejunum of ducks [23], feces of pigs [24,25] (%) are presented depending upon the availability of the information in the literature. THI, temperature humidity index.…”

Fires in Nature: A Review of the Challenges for Wild Animals

“…Different consequences of acute heat stress previously reported in animals have been decreased food intake [126,127], hormonal, metabolic, hypothalamic, and circadian alterations [127], epinephrine and norepinephrine increases [128], tissue stress [129], respiration rate and skin temperature increases, gonadal deleterious effects, and litter size diminution [130], and stress-related behaviours [131].…”