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Effect of organic acids on Salmonella shedding and colonization in pigs on a farm with high Salmonella prevalence

G Rasschaert, Joris Michiels UGent, Michele Martino Tagliabue UGent, Joris Missotten, Stefaan De Smet UGent and Marc Heyndrickx UGent (2016) JOURNAL OF FOOD PROTECTION. 79(1). p.51-58
abstract
This study builds on the results of a previous study in which six commercial feed products based on organic acids were evaluated with respect to Salmonella contamination of piglets in an artificially challenged seeder model. In the present study, the efficacy of three of these commercial products was assessed for Salmonella reduction in fattening pigs on one closed farm with a natural high Salmonella prevalence. In each of four fattening compartments, one of the following feed treatments was evaluated during two consecutive fattening rounds: (i) butyric acid (active ingredients at 1.3 kg/ton of feed; supplement A1), (ii) a combination of short-chain organic acids (mixture of free acids and salts) and natural extracts (2.92 kg/ton; supplement A4), (iii) a 1:1 blend of two commercial products consisting of medium-chain fatty acids, lactic acid, and oregano oil (3.71 kg/ton; supplement A5+A6), and (iv) a control feed. On the farm, the Salmonella status of the fattening pigs was evaluated by taking fecal samples twice during the fattening period. At the slaughterhouse, samples were collected from the cecal contents and the ileocecal lymph nodes. Salmonella isolates were serotyped and characterized by pulsed-field gel electrophoresis. This farm had a particularly high number of pigs shedding Salmonella with a wide variety of sero- and pulsotypes. Only the feed blend based on the medium-chain fatty acids was able to significantly reduce Salmonella prevalence both on the farm and at the slaughterhouse. With this combined supplement, the Salmonella reduction in the feces at slaughter age, in cecal contents at slaughter, and the lymph nodes was 50, 36, and 67%, respectively, compared with the control animals. This promising finding calls for further investigation including cost-efficiency of this combined feed product and its effect on the animals.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
SWINE PRODUCTION SYSTEMS, POLYMERASE-CHAIN-REACTION, COMBAT SALMONELLA, FATTY-ACIDS, TYPHIMURIUM, ENTERICA, STRATEGIES, INFECTION, PIGLETS, HERDS
journal title
JOURNAL OF FOOD PROTECTION
J. Food Prot.
volume
79
issue
1
pages
51 - 58
Web of Science type
Article
Web of Science id
000367965200007
JCR category
FOOD SCIENCE & TECHNOLOGY
JCR impact factor
1.417 (2016)
JCR rank
65/129 (2016)
JCR quartile
3 (2016)
ISSN
0362-028X
DOI
10.4315/0362-028X.JFP-15-183
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
7150265
handle
http://hdl.handle.net/1854/LU-7150265
date created
2016-03-15 15:45:06
date last changed
2016-12-19 15:45:21
@article{7150265,
  abstract     = {This study builds on the results of a previous study in which six commercial feed products based on organic acids were evaluated with respect to Salmonella contamination of piglets in an artificially challenged seeder model. In the present study, the efficacy of three of these commercial products was assessed for Salmonella reduction in fattening pigs on one closed farm with a natural high Salmonella prevalence. In each of four fattening compartments, one of the following feed treatments was evaluated during two consecutive fattening rounds: (i) butyric acid (active ingredients at 1.3 kg/ton of feed; supplement A1), (ii) a combination of short-chain organic acids (mixture of free acids and salts) and natural extracts (2.92 kg/ton; supplement A4), (iii) a 1:1 blend of two commercial products consisting of medium-chain fatty acids, lactic acid, and oregano oil (3.71 kg/ton; supplement A5+A6), and (iv) a control feed. On the farm, the Salmonella status of the fattening pigs was evaluated by taking fecal samples twice during the fattening period. At the slaughterhouse, samples were collected from the cecal contents and the ileocecal lymph nodes. Salmonella isolates were serotyped and characterized by pulsed-field gel electrophoresis. This farm had a particularly high number of pigs shedding Salmonella with a wide variety of sero- and pulsotypes. Only the feed blend based on the medium-chain fatty acids was able to significantly reduce Salmonella prevalence both on the farm and at the slaughterhouse. With this combined supplement, the Salmonella reduction in the feces at slaughter age, in cecal contents at slaughter, and the lymph nodes was 50, 36, and 67\%, respectively, compared with the control animals. This promising finding calls for further investigation including cost-efficiency of this combined feed product and its effect on the animals.},
  author       = {Rasschaert, G and Michiels, Joris and Tagliabue, Michele Martino and Missotten, Joris and De Smet, Stefaan and Heyndrickx, Marc},
  issn         = {0362-028X},
  journal      = {JOURNAL OF FOOD PROTECTION},
  keyword      = {SWINE PRODUCTION SYSTEMS,POLYMERASE-CHAIN-REACTION,COMBAT SALMONELLA,FATTY-ACIDS,TYPHIMURIUM,ENTERICA,STRATEGIES,INFECTION,PIGLETS,HERDS},
  language     = {eng},
  number       = {1},
  pages        = {51--58},
  title        = {Effect of organic acids on Salmonella shedding and colonization in pigs on a farm with high Salmonella prevalence},
  url          = {http://dx.doi.org/10.4315/0362-028X.JFP-15-183},
  volume       = {79},
  year         = {2016},
}

Chicago
Rasschaert, G, Joris Michiels, Michele Martino Tagliabue, Joris Missotten, Stefaan De Smet, and Marc Heyndrickx. 2016. “Effect of Organic Acids on Salmonella Shedding and Colonization in Pigs on a Farm with High Salmonella Prevalence.” Journal of Food Protection 79 (1): 51–58.
APA
Rasschaert, G, Michiels, J., Tagliabue, M. M., Missotten, J., De Smet, S., & Heyndrickx, M. (2016). Effect of organic acids on Salmonella shedding and colonization in pigs on a farm with high Salmonella prevalence. JOURNAL OF FOOD PROTECTION, 79(1), 51–58.
Vancouver
1.
Rasschaert G, Michiels J, Tagliabue MM, Missotten J, De Smet S, Heyndrickx M. Effect of organic acids on Salmonella shedding and colonization in pigs on a farm with high Salmonella prevalence. JOURNAL OF FOOD PROTECTION. 2016;79(1):51–8.
MLA
Rasschaert, G, Joris Michiels, Michele Martino Tagliabue, et al. “Effect of Organic Acids on Salmonella Shedding and Colonization in Pigs on a Farm with High Salmonella Prevalence.” JOURNAL OF FOOD PROTECTION 79.1 (2016): 51–58. Print.