Bacillus subtilis JATP-3 Improves Nitrogen Metabolism by Regulating Intestinal Flora and AKG in Weaned Piglets

Recently, it has been reported that oral probiotics improve the apparent digestibility of nitrogen in weaned piglets; however, the underlying mechanism is unclear. A total of 12 crossbred piglets (Yorkshire × Landrace; 28 days old) were randomly divided into two groups. The control (Con) group was fed with a basic diet + Luria-Bertani (LB; sterile; 10 mL), whereas the subject (Sub) group was fed with a basic diet + B. subtilis JATP-3 (1 × 10 CFU/mL; 10 mL). The results showed that feeding B. subtilis JATP-3 increased the final body weight and nitrogen deposition rate of weaned piglets (P