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Evaluation of probiotic bacteria for their effects on the growth performance and intestinal microbiota of newly-weaned pigs fed fermented high-moisture maize

文献类型： 外文期刊

作者： Wang, J. Q. 1 ; Yin, F. G. 1 ; Zhu, C. 3 ; Yu, H. 1 ; Niven, S. J. 3 ; de Lange, C. F. M. 3 ; Gong, J. 1 ;

作者机构： 1.Agr & Agri Food Canada, Guelph Food Res Ctr, Guelph, ON N1G 5C9, Canada

2.Chinese Acad Agr Sci, Feed Res Inst, Beijing 100081, Peoples R China

3.Univ Guelph, Dept Anim & Poultry Sci, Guelph, ON N1G 2W1, Canada

4.Chinese Acad Sci, Lab Anim Nutr Physiol & Metab Proc, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China

关键词： Lactobacillus acidophilus;Pediococcus acidilactici;Intestinal microbiota;Growth performance;Pigs

期刊名称：LIVESTOCK SCIENCE （ 影响因子：1.943； 五年影响因子：2.252 ）

ISSN： 1871-1413

年卷期： 2012 年 145 卷 1-3 期

页码：

收录情况： SCI

摘要： The effects of feeding high-moisture maize fermented with Lactobacillus acidophilus or Pediococcus acidilactici on the growth performance and intestinal microflora of newly weaned pigs were investigated. A total of 270 newly weaned pigs (equal numbers of castrated males and females) were allocated to 3 dietary treatments (5 pens per treatment and 18 pigs per pen) in a randomized complete block design on the basis of body weight (BW) and litter. The dietary treatments included a basal diet supplemented with: 1) naturally fermented high-moisture maize without any microbial inoculants (Control); 2) high-moisture maize fermented with L acidophilus (LA); and 3) high-moisture maize fermented with P. acidilactici (PA). Pigs were fed diets in liquid form for a 5-wk period. Quantitative polymerase chain reaction (QPCR) analysis with PCR primers specific to L. acidophilus or P. acidilactici indicated a well-developed bacterial population of each inoculated bacterium in the fermented high-moisture maize. Lactic acid was the major short-chain fatty acid (SCFA) produced from the fermentation. Among the 3 treatments and on most sampling days, LA-fermented maize had the numerically highest concentration of lactic acid. Dietary treatments over the 5-wk period did not impact pig growth performance. However, during last 3 wks of the trial, pigs on the LA treatment had higher BW gains than pigs on PA. Pigs fed LA-fermented high-moisture maize showed fewer coliform bacteria in fecal samples when compared to pigs fed PA-fermented high-moisture maize (P<0.05). The PCR and denaturing gradient gel electrophoresis (DGGE) analysis on the relatedness of bacterial profiles of colonic microbiota revealed 3 bacterial clusters and the microbiota from PA-treated pigs formed 1 cluster. In addition, feeding LA- or PA-fermented maize reduced the diversity and richness of bacterial microbiota in the colon (P<0.05). Both L acidophilus and P. acidilactici colonized poorly in the intestine of pigs regardless of the dietary treatments. These results indicate that feeding the probiotic-fermented, high-moisture maize can modulate the intestinal microbiota, and LA has the potential to impact pig growth performance. (C) 2012 Elsevier B.V. All rights reserved.

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