发酵饲料对猪胃肠道微生物菌群的影响。
Effect of fermented feed on the microbial population of the gastrointestinal tracts of pigs.
作者信息
van Winsen R L, Urlings B A, Lipman L J, Snijders J M, Keuzenkamp D, Verheijden J H, van Knapen F
机构信息
Department of the Science of Food of Animal Origin, University of Utrecht, The Netherlands.
出版信息
Appl Environ Microbiol. 2001 Jul;67(7):3071-6. doi: 10.1128/AEM.67.7.3071-3076.2001.
An in vivo experiment was performed with pigs to study the inhibitory effect of fermented feed on the bacterial population of the gastrointestinal tract. Results demonstrated a significant positive correlation between pH and lactobacilli in the stomach contents of pigs in dry feed as well as in the stomach contents of pigs fed fermented feed. Furthermore, a significant positive correlation between the pH and the numbers of bacteria in the family Enterobacteriaceae in the contents of the stomach of pigs fed dry feed was found. In the stomach contents of pigs fed fermented feed, a significant negative correlation was found between the concentration of the undissociated form of lactic acid and the numbers of Enterobacteriaceae. The numbers of Enterobacteriaceae in the contents of the stomach, ileum, cecum, colon, and rectum of pigs fed fermented feed were significantly lower compared with the contents of the stomach, ileum, caecum, colon, and rectum of pigs fed dry feed. The numbers of total lactobacilli were significantly higher in the stomach contents of pigs fed fermented feed and in the ileum contents of one pig group fed fermented feed compared with the contents of pigs fed dry feed. However, the influence of lactobacilli on numbers of Enterobacteriaceae could not be demonstrated. It was concluded that fermented feed influences the bacterial ecology of the gastrointestinal tract and reduces the levels of Enterobacteriaceae in the different parts of the gastrointestinal tract.
用猪进行了一项体内实验，以研究发酵饲料对胃肠道细菌群落的抑制作用。结果表明，在干饲料喂养的猪的胃内容物以及发酵饲料喂养的猪的胃内容物中，pH值与乳酸菌之间存在显著正相关。此外，在干饲料喂养的猪的胃内容物中，pH值与肠杆菌科细菌数量之间存在显著正相关。在发酵饲料喂养的猪的胃内容物中，未解离形式的乳酸浓度与肠杆菌科细菌数量之间存在显著负相关。与干饲料喂养的猪的胃、回肠、盲肠、结肠和直肠内容物相比，发酵饲料喂养的猪的胃、回肠、盲肠、结肠和直肠内容物中的肠杆菌科细菌数量显著降低。与干饲料喂养的猪的内容物相比，发酵饲料喂养的猪的胃内容物以及一组发酵饲料喂养的猪的回肠内容物中的总乳酸菌数量显著更高。然而，未证明乳酸菌对肠杆菌科细菌数量有影响。得出的结论是，发酵饲料影响胃肠道的细菌生态，并降低胃肠道不同部位的肠杆菌科细菌水平。
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