“…Many studies have revealed that Lactobacillus has the potential to regulate host immune systems, enhance gut metabolic capacities and maintain balance in the gut microbiota (Hou, Zeng, Yang, Liu, & Qiao, ; Zhang et al, ). Lactobacillus plantarum is considered an excellent probiotic in the gastrointestinal tracts of humans and animals and performs important probiotic actions, such as inhibiting Escherichia coli ‐induced intestinal permeability, reducing the incidence of Clostridium difficile , alleviating oxidative damage to the liver, improving growth performance and increasing intestinal immunity and anti‐inflammatory properties (de Vries, Vaughan, Kleerebezem, & de Vos, ; Dudzicz, Kujawa‐Szewieczek, Kwiecien, Wiecek, & Adamczak, ; Fak, Ahrne, Molin, Jeppsson, & Westrom, ; Herías et al, ; Khanian, Karimi‐Torshizi, & Allameh, ; Malik et al, ; Wullt, Johansson Hagslatt, Odenholt, & Berggren, ). Researches have shown that oral administration of L. plantarum can improve the immune responses and enhance the intestinal barrier function of weaning piglets (Wang, Ji, et al, ; Yang, Jiang, Zheng, Wang, & Yang, ).…”