Ghent University Academic Bibliography

Advanced

Gut antibacterial effects of C7 and C9 carboxylic acids in the diet of piglets

Stefaan De Smet UGent, Joris Michiels UGent, Anneke Ovyn UGent, Noël Dierick UGent, M Laget, An Cools UGent and A Lauwaerts (2016) JOURNAL OF ANIMAL SCIENCE. 94(suppl. 3). p.54-57
abstract
The antibacterial effects of odd-numbered medium-chain fatty acids (MCFA), such as C7 and C9 carboxylic acids, are poorly described and, hence, their potential as a feed additive for weaned piglets has not been explored. First, the antimicrobial activity was tested in in vitro incubations simulating the digestion in the stomach (pH 3), duodenum (pH 5), and ileum (pH 7) at 0, 17.5, 35.0, and 70.0 mmol/L carboxylate and compared with even-numbered MCFA. All compounds showed a significant reduction of analyzed bacterial counts compared with the control, in many cases >2 log reduction up to complete disappearance, depending on pH and dose. At pH 3 and 5, C6 through C9 carboxylic acids were equally effective against coliforms, whereas C10 was less effective. The activity against lactobacilli and streptococci was higher at the lower pH and increased with chain length. The antimicrobial effects of C7 and C9 carboxylic acids were, in most cases, in between or, in one case, better than that of their respective neighboring even-numbered MCFA. Next, an equal mixture of C7 and C9 carboxylic acid was fed to weaned piglets at 0, 0.1, 0.2, and 0.4% carboxylic acids in the diet for 42 d (8 pen replicates with 6 pigs each). At d 13/14, 1 piglet per pen was sampled to determine major gastric and proximal and distal small intestinal bacterial groups and histomorphological characteristics. Numerical improvements of animal performance for all supplemented diets were observed (P > 0.05) and this corroborated with a trend for longer villi in the proximal small intestine (P = 0.082). The highest dose tended to reduce streptococci in the stomach contents (P = 0.079). In vitro, C7 and C9 carboxylic acids demonstrated clear and significant antibacterial effects against the major bacterial groups in the stomach and small intestine. In the postweaning performance trial, they showed potential to ameliorate performance.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
antimicrobial, feed additives, medium-chain fatty acids, odd numbered, villus, weaned piglets, CHAIN FATTY-ACIDS, EXOGENOUS LIPOLYTIC ENZYMES, NUTRITIONAL ANTIBIOTICS, TRIACYLGLYCEROLS, RELEASE, FLORA, MCFAS
journal title
JOURNAL OF ANIMAL SCIENCE
J. Anim. Sci.
volume
94
issue
suppl. 3
pages
54 - 57
Web of Science type
Article
Web of Science id
000385006900009
JCR category
AGRICULTURE, DAIRY & ANIMAL SCIENCE
JCR impact factor
1.863 (2016)
JCR rank
8/58 (2016)
JCR quartile
1 (2016)
ISSN
0021-8812
DOI
10.2527/jas2015-9532
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8158406
handle
http://hdl.handle.net/1854/LU-8158406
date created
2016-11-18 08:48:15
date last changed
2017-05-03 12:05:10
@article{8158406,
  abstract     = {The antibacterial effects of odd-numbered medium-chain fatty acids (MCFA), such as C7 and C9 carboxylic acids, are poorly described and, hence, their potential as a feed additive for weaned piglets has not been explored. First, the antimicrobial activity was tested in in vitro incubations simulating the digestion in the stomach (pH 3), duodenum (pH 5), and ileum (pH 7) at 0, 17.5, 35.0, and 70.0 mmol/L carboxylate and compared with even-numbered MCFA. All compounds showed a significant reduction of analyzed bacterial counts compared with the control, in many cases {\textrangle}2 log reduction up to complete disappearance, depending on pH and dose. At pH 3 and 5, C6 through C9 carboxylic acids were equally effective against coliforms, whereas C10 was less effective. The activity against lactobacilli and streptococci was higher at the lower pH and increased with chain length. The antimicrobial effects of C7 and C9 carboxylic acids were, in most cases, in between or, in one case, better than that of their respective neighboring even-numbered MCFA. Next, an equal mixture of C7 and C9 carboxylic acid was fed to weaned piglets at 0, 0.1, 0.2, and 0.4\% carboxylic acids in the diet for 42 d (8 pen replicates with 6 pigs each). At d 13/14, 1 piglet per pen was sampled to determine major gastric and proximal and distal small intestinal bacterial groups and histomorphological characteristics. Numerical improvements of animal performance for all supplemented diets were observed (P {\textrangle} 0.05) and this corroborated with a trend for longer villi in the proximal small intestine (P = 0.082). The highest dose tended to reduce streptococci in the stomach contents (P = 0.079). In vitro, C7 and C9 carboxylic acids demonstrated clear and significant antibacterial effects against the major bacterial groups in the stomach and small intestine. In the postweaning performance trial, they showed potential to ameliorate performance.},
  author       = {De Smet, Stefaan and Michiels, Joris and Ovyn, Anneke and Dierick, No{\"e}l and Laget, M and Cools, An and Lauwaerts, A},
  issn         = {0021-8812},
  journal      = {JOURNAL OF ANIMAL SCIENCE},
  keyword      = {antimicrobial,feed additives,medium-chain fatty acids,odd numbered,villus,weaned piglets,CHAIN FATTY-ACIDS,EXOGENOUS LIPOLYTIC ENZYMES,NUTRITIONAL ANTIBIOTICS,TRIACYLGLYCEROLS,RELEASE,FLORA,MCFAS},
  language     = {eng},
  number       = {suppl. 3},
  pages        = {54--57},
  title        = {Gut antibacterial effects of C7 and C9 carboxylic acids in the diet of piglets},
  url          = {http://dx.doi.org/10.2527/jas2015-9532},
  volume       = {94},
  year         = {2016},
}

Chicago
De Smet, Stefaan, Joris Michiels, Anneke Ovyn, Noël Dierick, M Laget, An Cools, and A Lauwaerts. 2016. “Gut Antibacterial Effects of C7 and C9 Carboxylic Acids in the Diet of Piglets.” Journal of Animal Science 94 (suppl. 3): 54–57.
APA
De Smet, Stefaan, Michiels, J., Ovyn, A., Dierick, N., Laget, M., Cools, A., & Lauwaerts, A. (2016). Gut antibacterial effects of C7 and C9 carboxylic acids in the diet of piglets. JOURNAL OF ANIMAL SCIENCE, 94(suppl. 3), 54–57.
Vancouver
1.
De Smet S, Michiels J, Ovyn A, Dierick N, Laget M, Cools A, et al. Gut antibacterial effects of C7 and C9 carboxylic acids in the diet of piglets. JOURNAL OF ANIMAL SCIENCE. 2016;94(suppl. 3):54–7.
MLA
De Smet, Stefaan, Joris Michiels, Anneke Ovyn, et al. “Gut Antibacterial Effects of C7 and C9 Carboxylic Acids in the Diet of Piglets.” JOURNAL OF ANIMAL SCIENCE 94.suppl. 3 (2016): 54–57. Print.