China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (11): 3757-3766.doi: 10.16431/j.cnki.1671-7236.2020.11.040

• Preventive Veterinary Medicine • Previous Articles     Next Articles

The Effects of Lactobacillus salivarius TCSL1 on Growth Performance,Hematology, Serum Biochemical Indexes and Intestinal Health in Puppies

TIAN Qizhen, TANG Chenchen, SHEN Danqing, LU Wei, CAI Bingyan   

  1. Jiangsu Agri-animal Husbandry Vocational College, Taizhou 225300, China
  • Received:2020-03-30 Online:2020-11-20 Published:2020-11-20

Abstract: The aim of this study was to evaluate the effects of Lactobacillus salivarius TCSL1 on the growth performance,hematology and serum biochemical indexes and intestinal health of puppies,which was to lay a foundation for the research and development of probiotics for puppies.24 healthy six-week-old Chinese garden dogs were randomly divided into 4 groups,6 dogs were in each group.The experimental groups were fed with low (5×106 CFU/mL),medium (5×108 CFU/mL) and high dose (5×1010 CFU/mL) Lactobacillus salivarius TCSL1 orally for 28 days,respectively.At the same time,the control group took saline orally for 28 days.During the experiment,the behavior,diet and diarrhea were observed and recorded regularly.After 28 d,dogs were weighed respectively to calculate the gained weight.Blood samples were collected to detect hematology,serum biochemistry,intestinal barrier and inflammatory cytokines.Feces were collected to detect the content of secretory immunoglobulin sIgA and the number of main intestinal bacteria.The results showed that compared with the control group,all the experimental groups could promote the weight growth of puppies,reduced the diarrhea rate,and had a positive correlation with the oral dose.The number of lymphocyte,erythrocyte,immunoglobulin and alkaline phosphatase content increased,while alanine transaminase and creatinine decreased,but there were significant differences between the groups (P<0.05).With the increase of oral Lactobacillus salivarius dose,the content of intestinal barrier indicator factors such as diamine oxidase (DAO),D-lactate and lipopolysaccharide (LPS) in the serum of the experimental groups showed a significant decrease (P<0.05).The contents of TNF-α and IL-6 in serum of the experimental groups decreased significantly (P<0.05),while the contents of TGF-β1 and IL-10 increased significantly (P<0.05).The content of secretory of immunoglobulin sIgA in the feces of the experimental groups increased significantly (P<0.05),the number of coliform and Enterococcus in the feces of the experimental groups decreased significantly (P<0.05),the number of Lactobacillus and Bifidobacterium increased significantly (P<0.05).The above results showed that the oral Lactobacillus salivarius TCSL1 could improve the growth performance of puppies,enhanced the intestinal health and reduced the frequency of diarrhea.5×1010 CFU/mL per day of the oral Lactobacillus salivarius TCSL1 had the best effect.

Key words: puppies; Lactobacillus slivarius TCSL1; growth performance; intestinal health; probiotic

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