Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Impact of the Advances in Age on the Gastrointestinal Microflora of Beagle Dogs
Yoshimi BENNOHiroyuki NAKAOKiyohisa UCHIDATomotari MITSUOKA
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1992 Volume 54 Issue 4 Pages 703-706

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Abstract

The gastrointestinal microflora of male beagle dogs in two different age groups; I) less than month 12 of age, and II) more than year 11 of age, was compared. No detectable difference occurred on the microflora of stomach, duodenum, jejunum, and ileum in both dogs. Large bowel (cecum, colon and rectum) microflora in both dogs yielded the different microbial populations. In all regions of large bowel, the levels of bacteroides, eubacteria, peptostreptococci, bifidobacteria, lactobacilli, and staphylococci in the elderly dogs were lower than those in the younger animals, whereas the numbers of Clostridium perfringens and streptococci in the elderly animals were higher than those in the youngers. The high incidence of lecithinase-negative clostridia was observed with advances in age, but not that of spiral shaped rods. The result of this study shows that the advances in age of beagle dogs yield some changes in the microbial population of large bowel in the animals.

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