CategoryPre-Harvest Pork Safety
Date Full Report Received10/01/2003
Date Abstract Report Received06/24/2009
InvestigationInstitution: University of Minnesota
Primary Investigator: Carlos Pijoan
Co-Investigators: Robert Morrison, Simone Oliveira
Funded ByNational Pork Board
This study compared 3 different interventions to control Haemophilus parasuis mortality in nursery pigs. Both a commercial and an autogenous vaccine had no significant effect in this farm system. In contrast, a reduction of more than 50% mortality was observed when piglets were inoculated with a live culture of the farm’s virulent strain at 5 days of age. The rationale for this intervention was to increase the number of colonized piglets when still protected by maternal antibodies. The benefits and risks of this intervention are discussed in the report.