China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (3): 884-891.doi: 10.16431/j.cnki.1671-7236.2020.03.028

• Preventive Veterinary Medicine • Previous Articles     Next Articles

The Effect of Lactobacillus reuteri LR1 on the Immune Response of Swine Common Virus Vaccine

FENG Junsen1,2, XIONG Yunxia1, WU Qiwen1, WANG Li1, JIANG Zongyong1, YI Hongbo1   

  1. 1. Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agricultur and Rural Affairs, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
  • Received:2019-10-18 Online:2020-03-20 Published:2020-03-17

Abstract: In order to study the effect of Lactobacillus reuteri LR1 isolated earlier on immunological effect of swine common viral vaccines,the whole process of Lactobacillus reuteri LR1 was used instead of feed antibiotics.A total of 144 weaned pigs (21 days old,Duroc×Landrace×Large White) were selected and randomly divided into 3 groups with 8 replicates in each group and 6 pigs in each replicate.The control group (CON) was fed basic diet,and the antibiotic group (OA) was fed basic diet +100 mg/kg olaquindox +75 mg/kg aureomycin,and the probiotics group (LR1) was fed basic diet +5×1010 CFU/kg Lactobacillus reuteri LR1.The use of antibiotics was stopped at 120 d,and the experimental period was 166 d.All pigs were immunized according to the unified immunization procedure.The antibody levels of porcine reproductive and respiratory syndrome virus (PRRSV),Hog cholera virus (HCV),foot-and-mouth disease virus (FMDV),pseudorabies virus (PRV),porcine parvovirus (PPV) and the level of IgG were detected in the serum of pigs at the 14th,42nd,120th,127th,134th and 166th days after the test.The results showed that,compared with the control group and the antibiotic group,the antibody level of FMDV in the serum of probiotics group on the 14th day was significantly increased (P<0.05).Compared with the control group,the antibody level of PPV in the serum of probiotics group and antibiotic group on the 120th day were significantly increased (P<0.05).The antibody level of PRRSV in the serum of the probiotics group on the 166th day was significantly higher than that of the control group (P<0.05).The antibody level of HCV in the serum of the probiotics group on the 166th day was significantly higher than those of the control group and the antibiotic group (P<0.05).In conclusion,dietary Lactobacillus reuteri LR1 supplementation could improve the antibody levels of common viruses in commercial pigs to a certain extent.These data suggested that Lactobacillus reuteri LR1 can be used to develop new substitutes for antibiotic,and has a great potential in the prevention and treatment of diseases during replacing dietary antibiotics.

Key words: Lactobacillus reuteri LR1; antibiotics; pigs; antibody level; IgG

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