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Effects of Dietary Supplementation of Immunoglobulin of Yolk on Growth Performance, Serum Biochemical Parameters, Intestinal Morphology and Microbial Flora of Weaned Piglets

  • ZHANG Wenfei ,
  • LIU Pingping ,
  • GUAN Wutai ,
  • CHEN Fang ,
  • DENG Yuelin
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  • 1. College of Animal Science, South China Agricultural University, Guangzhou 510642, China;
    2. Uncoil Feeding Oil & Fat Research Centre, College of Animal Science, South China Agricultural University, Guangzhou 510642, China

Received date: 2016-07-12

  Online published: 2017-01-16

Abstract

This experiment was conducted to investigate the effects of dietary supplementation of immunoglobulin of yolk (IgY) on growth performance, serum biochemical parameters, intestinal morphology and microbial flora of weaned piglets. One hundred and sixty (25±1)-day-old 'Duroc×Landrace×Large Yorkshire' weaned piglets were assigned to 4 groups with 4 replicates per group and 10 pigs per replicate. Weaned piglets in the 4 groups were fed 4 diets as follows:basis diet (control group), basis diet+0.4 kg/t colistin (antibiotic group), basis diet+1.0 kg/t IgY (IgY group) and basis diet+0.2 kg/t colistin+0.5 kg/t IgY (combine group), respectively. The experiment lasted for 28 days. The results showed as follows:1) compared with the control group, the average daily gain of weaned piglets in IgY group was significantly improved (P<0.05), the ratio of feed to gain and diarrhea rate of weaned piglets was significantly decreased (P<0.05), and there was no significant effect on average daily feed intake of weaned piglets (P>0.05). Compared with the antibiotic group, IgY group had no significant effect on growth performance of weaned piglets (P>0.05), and both showed similar results. 2) Compared with the control group, the contents of total protein and albumin in serum of weaned piglets in IgY group were significantly improved (P<0.05). 3) Compared with the control group, the villus height and ratio of villus height to crypt depth (VH/CD) in ileum of weaned piglets in IgY group were significantly improved (P<0.05), and there were no significant effects on villus height, crypt depth and VH/CD in duodenum and jejunum of weaned piglets (P>0.05). 4) Compared with the control group, the number of E.coli in ileum and cecum of weaned piglets in IgY group were significantly decreased (P<0.05), and the numbers of Lactobacilli in ileum and cecum of weaned piglets in IgY group were significantly increased (P<0.05). In conclusion, dietary supplementation of IgY can improve the growth performance of weaned piglets, enhance the immunity, improve gut health levels, and promote the growth of beneficial bacteria. It has the same effect of the use of antibiotics and is the most promising alternatives to antibiotics.

Cite this article

ZHANG Wenfei , LIU Pingping , GUAN Wutai , CHEN Fang , DENG Yuelin . Effects of Dietary Supplementation of Immunoglobulin of Yolk on Growth Performance, Serum Biochemical Parameters, Intestinal Morphology and Microbial Flora of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2017 , 29(1) : 271 -279 . DOI: 10.3969/j.issn.1006-267x.2017.01.031

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