Effects of Clostridium butyricum on Intestinal Flora and Serum Micromolecule Urotoxin Contents of Dogs with Chronic Renal Failure

  • LU Jiang ,
  • ZHU Daoxian ,
  • ZHAO Xuegang ,
  • LIU Li
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  • 1. Department of Pet Science and Technology, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China;
    2. Department of Animal Medicine, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China

Received date: 2019-10-17

  Online published: 2020-04-16

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Abstract

This experiment was conducted to study the effects of Clostridium butyricum on intestinal flora and serum micromolecule urotoxin contents of dogs with chronic renal failure (CRF). Twenty 2-year-old male poodles were randomly divided into four groups:sham operation control group (CL group), model group (MD group), low dose Clostridium butyricum group (LCB group) and high dose Clostridium butyricum group (HCB group), each group contained 5 dogs. Dogs in CL group were operated to only open abdominal cavity, while dogs in other 3 groups were established CRF model by ligation of renal artery. After successful modeling, LCB group and HCB group were intervened with 0.5 and 1.0 g/kg BW Clostridium butyricum per day for 4 weeks, respectively. The contents of urea nitrogen (UN), creatinine (Cr) and indolephenol sulfate (IS) in serum and feces were detected, and the intestinal flora 16S rDNA was detected by high throughput sequencing. The results showed as follows:1) at the end of the experiment (week 4), the contents of UN, Cr and IS in serum of LCB group and HCB group were significantly lower than those of MD group (P<0.01), but significantly higher than CL group (P<0.01); compared with the LCB group, the contents of UN and IS in serum of HCB group were significantly decreased (P<0.05), and the serum Cr content was significantly decreased (P<0.01). At the end of the experiment, the contents of UN and Cr in feces of HCB group were significantly lower than those of MD group (P<0.05), the contents of UN and Cr in feces of CL group were significantly lower than those of MD group, LCB group and HCB group (P<0.05). 2) Feeding Clostridium butyricum could decreased the α diversity of intestinal flora of dogs with CRF, the Chao1 index and Shannon index of HCB group were significantly lower than those of MD group (P<0.05). The Principal coordinate analysis (PCoA) results showed that samples of 4 groups had obvious clustering. 3) At the phylum level, the relative abundances of Actinobacteria and Proteobacteria in intestine of MD group were significantly higher than those of CL group (P<0.05),and the relative abundances of Actinobacteria and Proteobacteria in intestine of LCB group and HCB group were significantly lower than those of MD group (P<0.05); at the genus level, deeding Clostridium butyricum could decreased the relative abundances of Proteus, Escherichia, Enterobacter, Prevotella, Actinomyces and Nesterenkonia in intestine of dogs with CRF. LEfSe analysis showed that there were 19 difference biomarkers in intestinal flora of dogs with CRF, were mainly concentrated in Proteobacteria and Actinobacteria, and feeding Clostridium butyricum could decreased the difference of biomarkers of dogs with CRF. 4) Spearman rank correlation analysis showed that the contents of UN, Cr and IS were strongly positively correlated with the relative abundances of Enterobacter, Proteus and Escherichia, and were strongly negatively correlated with the relative abundances of Lactobacillus and Bifidobacterium. In summary, intestinal flora disorder is correlated with serum micromolecule urotoxin contents, and Clostridium butyricum can promote the clearance of micromolecule urotoxin in serum by regulating the intestinal flora structure of dogs with CRF, and the appropriate dosage is 1.0 g/kg BW per day.

Cite this article

LU Jiang , ZHU Daoxian , ZHAO Xuegang , LIU Li . Effects of Clostridium butyricum on Intestinal Flora and Serum Micromolecule Urotoxin Contents of Dogs with Chronic Renal Failure[J]. Chinese Journal of Animal Nutrition, 2020 , 32(4) : 1826 -1835 . DOI: 10.3969/j.issn.1006-267x.2020.04.041

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