LEfSe analysis to identify the differentially abundant taxa genera (with LDA ≥ 2.5) of fecal microbiota of sows during pregnancy and after farrowing in the control and NCG groups. (A) The distribution of bacterial genera in fecal samples of sows at D30 of pregnancy. (B) The distribution of bacterial genera in fecal samples of sows at D70. (C) The distribution of bacterial genera in fecal samples of sows at D110. (D) The distribution of bacterial genera in fecal samples of sows after farrowing. NCG: N-carbamylglutamate; C30, C70, C110, and CF represent control group at D30, D70, D110 of pregnancy, and after farrowing, respectively; N30, N70, N110, and NF represent NCG group at D30, D70, D110 of pregnancy, and after farrowing, respectively; n = 8.