China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (7): 2043-2054.doi: 10.16431/j.cnki.1671-7236.2020.07.009

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effects of Water Extract of Three Qingre Chinese Medicine on Intestinal Flora and Mucosal Barrier Function of Broilers

LIANG Xiaorui, WANG Danyang, QIAO Yanjie, ZHANG Baojun, SUN Guojie, SHAO Yongbin, GU Xinli, LUO Yan   

  1. College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
  • Received:2020-01-10 Online:2020-07-20 Published:2020-07-18

Abstract: In order to study the regulation and repair of intestinal flora and intestinal mucosal damage by single-flavor Chinese medicine,the intestinal flora of broiler chickens caused by Escherichia coli was selected from Chinese herbal medicines of Honeysuckle,Forsythia and Herba violet.It provided a reliable theoretical basis for improving the beneficial flora of intestinal bacteria and protecting intestinal mucosal barrier.100 male broilers of 1 day old were selected and divided into five groups,20 in each group.The blank group was fed normally.The model group and the Chinese medicine group were intraperitoneally injected with E.coli O78 (1.0×106 CFU/mL) at 15-17 days,1 mL each.The Chinese medicine group began to drink traditional Chinese medicine on the 18th day for 7 consecutive days.The dose of each Chinese medicine was 1 g/kg.On the 7 and 14 d after administration,6 chickens in each group were treated with blood stasis.D-lactic acid (D-LA),diamine oxidase (DAO) and endotoxin (ET) were performed according to the Kit instructions by ELISA.Jejunum and cecum were collected.The relative expression levels of jejunal tight junction proteins (ZO-1,Occludin,and Claudin-1) were detected by Real-time fluorescent quantitative PCR.Cecal delivery and detection company was sequenced to detect the influence of traditional Chinese medicine on the diversity of cecal flora.The results showed that Honeysuckle,Forsythia and Herba violet could reduce the levels of serum DAO,D-LA and ET on the 7th and 14th day after administration.On the 7th day after administration,the relative mRNA expression of ZO-1 and Occludin in Honeysuckle group was significantly increased (P<0.05).The relative mRNA expression of Claudin-1 and Occludin in the Forsythia group was significantly increased (P<0.05).On the 14th day after administration,the relative mRNA expression levels of ZO-1 in Honeysuckle group were significantly increased (P<0.05),while the relative mRNA expression levels of ZO-1 and Claudin-1 in Forsythia group and Herba violae were significantly increased (P<0.05).Honeysuckle,Forsythia and Herba violet promoted the proportion of Firmicutes on day 7 after administration (P<0.05),while Honeysuckle,Herba violet promoted the proportion of Bacteroidetes on day 14 after administration (P<0.05).Honeysuckle,Herba violet inhibited the proportion of Proteobacteria at 7 and 14 d after administration,and Herba violet and Forsythia inhibited the growth of Actinobacteria at 7 d after administration (P<0.05).Forsythia,Honeysuckle can significantly increase the proportion of Lactobacillus 7 and 14 d after administration,and Herba violet can significantly increase the proportion of Lactobacillus 7 d after administration (P<0.05).The proportion of the uncultured_bacterium_f_Lachnospiraceae on 14 d after administration was significantly increased by Herba violet.Honeysuckle,Herba violet and Forsythia can reduce the content of serum DAO,D-LA and ET in broilers.Honeysuckle could improve the relative mRNA expression of ZO-1,Occludin and Forsythia could contribute to the relative mRNA expression of ZO-1,Claudin-1 and Occludin.The relative mRNA expression levels of ZO-1 and Claudin-1 were increased by Herba violae.Honeysuckle,Herba violet and Forsythia could increase the number of intestinal OTU,promote the reproduction of beneficial bacteria,inhibit the growth of pathogenic bacteria,and regulate the structure of intestinal flora.

Key words: high-throughput sequencing; heat-clearing traditional Chinese medicine; intestinal flora; testinal mucosal barrier

CLC Number: