Probiotic Lactobacillus johnsonii BS15 promotes growth performance,intestinal immunity and gut microbiota in piglets
Numerous studies have investigated the beneficial effects of Lactobacillus johnsonii strain BS15 on mice and broilers.This study aimed to understand the growth-promoting effects of BS15 on piglets.We determined the effects of L.johnsonii BS15 and a commercial probiotic strain,Bacillus subtilis JS01.Seventy-two suckling piglets(1 ± 2 day-old)were divided into three groups and fed with diets supplemented with 1×106 colony-forming units(cfu)BS15 per gram of feed(BS15 group); 1×106 cfu JS01 per gram of feed(JS01 group); or de Man,Rogosa,and Sharpe liquid medium(control group)35 days.Compared with JS01,BS15 significantly improved the daily weight gain and diarrhea index of the piglets.The BS15 group had higher Fecal sIgA levels,whereas the JS01 group had high fecal sIgA levels only after 35 days of treatment.Additionally,BS15 altered T-cell subsets in peripheral blood by significantly increasing CD3+CD4+T cell percentage and CD3+CD4+/CD3+CD8+ratio and decreasing CD3+CD8+T cell percentage.Moreover,BS15 exerted better beneficial effects on fecal microbiota than JS01.Specifically,the BS15 group had markedly increased Clostridium,Peptococcus,and Lactobacillus populations on days 7 and 21 of treatment and reduced Escherichia coli populations on day 35 of treatment.These findings indicated that BS15 can be applied as a probiotic that promotes growth performance and controls diarrhea in piglets.
T-cell subsets Lactobacillus johnsonii intestinal immunity probiotic piglet
Ning Sun Jinge Xin Dong Zeng? Hesong Wang Ying Zhao Kangcheng Pan Bo Jing Xueqin Ni
College of Veterinary Medicine,Sichuan Agricultural University,Chengdu,Sichuan,China
国内会议
成都
英文
300-308
2019-05-29（万方平台首次上网日期，不代表论文的发表时间）