Colonic Microbiota of Three Pig Breeds from Suckling to Weaning

The results showed that colonic microbial diversity increased with age, with distinct composition at 1 day. In addition, colonic Lactobacillus and Bacteroides abundances were higher (P < 0.05) in the 1-day-old Duroc piglets, as well as Clostridium_sensu_stricto_1 abundance (P < 0.05) in the 1-day-old TB piglets. At 24 days, butyric acid-producing Subdoligranulum abundance was higher (P < 0.05) in the TB piglets, as well as Bacteroides abundance (P < 0.05) in the XB piglets. The LEfSe analysis and PICRUSt2 function prediction showed that increased Bacteroides and Muribaculaceae abundances (P < 0.05) might be the potential biomarkers associated with enhanced secondary bile acid biosynthesis and streptomycin biosynthesis in the XB piglets at 24 days.