ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (10): 1902-1911.doi: 10.11843/j.issn.0366-6964.2017.10.013

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Effects of Enterococcus faecium B13 Yielding Bacteriocin on Growth Performance, Nutrient Digestibility, Serum Immune Indexes and Fecal Microbiota of Weaned Piglets

DING Shuang, GUO Chun-hua, ZHANG Zheng-fan, BAI Xue, WEI Jie, ZHANG Ming, LUO Fan*   

  1. College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China
  • Received:2017-04-28 Online:2017-10-23 Published:2017-10-23

Abstract:

This study was conducted to evaluate the effects of dietary Enterococcus faecium B13 on growth performance, nutrient digestibility, serum immune parameters and fecal microbiota in weaned piglets. A total of 56 healthy crossbred “Duroc×Landrace× Yorkshire” weaned piglets at 28 days of age with an average body weight of (7.89 ± 1.37) kg were allotted to 4 treatments: group A (antibiotic group), group B (without antibiotic group), group C (compound bacteria group), group D (test group: Enterococcus faecium B13), according to the complete randomized block design. The experiment lasted for 42 d. The result showed that: 1) The ADG and the apparent digestibility of Ca were improved in group C and D compared with group B(P<0.05). The level of IgG in group D was increased by 19.72%(P<0.05) compared with group B.2) Denaturing gradient gel electrophoresis (DGGE) showed that the application of E. faecium B13 changed the bacterial community in fecal. 3) Real-time PCR results showed that, compared with group B, the number of Lactobacillus and E. faecium were increased (P<0.05) and the number of Escherichia coli had decreasing tendency (P = 0.07) in group C and D. Therefore, under the condition of this experiment, the dietary of E. faecium B13 supplementation can improve the growth performance, digestibility of crude protein and calcium and enhance immune responses in weaned piglets. It can maintain the stability of digestive tract microflora of piglets and prevent the growth of pathogenic microorganisms.

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