Serological follow-up in breeding herds infected with Actinobacillus pleuropneumoniae Serotype 1 using the tube agglutination test with 2-mercaptoethanol

Jean Pierre Vaillancourt, Guy Pierre Martineau, Serge Lariviere, Robert Higgins, Khyali R. Mittal

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

A serological study on Actinobacillus pleuropneumoniae serotype 1 infection of swine breeding herds was undertaken in Quebec. The purpose of this study was to obtain a better understanding of the dynamics of the infection in breeding herds by serological monitoring of piglets aged between 0 and 8 weeks of age. In each herd, newly farrowed sows were bled and from each of them, 5 piglets were randomly tagged and bled at ∼ 3 days of age. These piglets were bled again on Days 14, 28, 42 and 56. The tube agglutination test with 2-mercaptoethanol (TAT-2ME) was the serological test used. The relationship between the sows' serological status a few days after parturition and the piglets' serological status at the same period and at 8 weeks of age was also assessed. It was found that the proportion of seropositive sows as well as their titers tended to decrease with age. The overall correlation between the serologic status of the sow and that of her litter at 3 days of age was 83.9%. A rapid drop in the percentage of TAT-2ME-positive piglets from 3 days to 4 weeks of age was followed by a significant increase in the proportion of seropositive piglets at 6 and 8 weeks of age. This is strongly suggestive of the appearance of an active immunity among these animals. The correlation between the serological status of the piglets at 3 days of age (indicator of maternal immunity) and at 8 weeks was inconsistent using the TAT-2ME. This lack of a relationship could mean that the sow has little influence on the serological response of her piglets at 8 weeks of age.

Original languageEnglish (US)
Pages (from-to)263-274
Number of pages12
JournalPreventive Veterinary Medicine
Volume6
Issue number4
DOIs
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology

Fingerprint Dive into the research topics of 'Serological follow-up in breeding herds infected with Actinobacillus pleuropneumoniae Serotype 1 using the tube agglutination test with 2-mercaptoethanol'. Together they form a unique fingerprint.

  • Cite this