Real-time PCR quantification of the predominant bacterial divisions in the distal gut of Meishan and Landrace pigs.
Firmicutes and Bacteroidetes are closely related to body fat in humans and mice, which are the two dominant bacterial divisions of gut microbiota in mammals. Here real-time PCR analysis indicated that Meishan pigs had a 34% reduction in percentage Bacteroidetes (P = 0.008) and a significantly lower proportion of Bacteroides (P = 0.013) than Landrace pigs. The percentage of Bacteroidetes or Bacteroides had a negative correlation with body fat (R2 was 0.63 for Bacteroidetes and 0.57 for Bacteroides, P < 0.05). There was a trend that the percentage of Firmicutes in Meishan pigs was higher in numerical value than in Landrace pigs, although this difference was not statistically significant (P = 0.290) between the two breeds. These suggested that body fat correlated with the percentage of Bacteroidetes division of the gut microbiota in the common pig breeds, and the differences of gut microbial ecology in obese versus lean animals may be analogous.
Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, PR China.
Xiulan
X
Guo
Xinjie
X
Xia
Renyong
R
Tang
Kangning
K
Wang
D000273:Adipose Tissue; D000818:Animals; D001439:Bacteroides / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D015169:Colony Count, Microbial / Q000379:methods*; D041981:Gastrointestinal Tract / Q000382:microbiology*; D006094:Gram-Positive Bacteria / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D016133:Polymerase Chain Reaction / Q000379:methods*; D013223:Statistics as Topic; D013552:Swine / Q000382:microbiology*