Vaccination and diagnosis of enzootic pneumonia

Vaccination and diagnosis of enzootic pneumonia

Scientific publication

Vaccination and diagnosis of enzootic pneumonia

This study was carried out for an external R&D service for a pharmaceutical laboratory. The objective was twofold. First, for our client, this study made it possible to compare the effectiveness of two of these vaccines for the prevention of enzootic pneumonia in breeding based on clinical criteria, technical performance (ADG, mortality) and injury criteria. at the slaughterhouse. This study also made it possible to study the dynamics of Mycoplasma hyopneumoniae in breeding by comparing the number of positive pigs (by PCR and by serological analysis) and the bacterial load between vaccinated pigs with unvaccinated pigs raised together.

vaccins pour la prévention de la pneumonie enzootique
The impact of parity on haematological parameters and the consequences on reproductive performance

The impact of parity on haematological parameters and the consequences on reproductive performance

Scientific publication

Haematological reference intervals of sows at end gestation in ten French herds, the impact of parity on haematological parameters and the consequences on reproductive performance

Changes in haematological values occur during the reproductive cycle. In veterinary swine practice, haematological reference intervals for this period are scarce. Over past decades, there has been a remarkable increase in reproductive prolificacy, possibly making previously established haematological reference intervals for sows outdated.

The aim of this study was to provide updated haematological reference intervals for sows at endgestation, to study the influence of parity on those haematological parameters and to evaluate the impact of haemoglobin levels on production performance.

conséquences des paramètres sanguins sur les mise bas

Microbiological quality of liquid feed consumed by sows VS neonatal diarrhoea (2/2)

Microbiological quality of liquid feed consumed by sows VS neonatal diarrhoea (2/2)

Scientific publication

Microbiological quality of liquid feed consumed by sows VS neonatal diarrhoea (2/2)

This study is part of our internal R&D project aimed at better understanding neonatal diarrhea, to allow better management of this problem with serious consequences both for the health of piglets and for the technical and economic performance of farms. The objective of this case-control study was to assess whether the microbiological quality of the unfermented soup distributed to sows was associated with the presence of recurrent neonatal diarrhea in the herd. Our study suggests that the higher the counts of total coliforms, enterococci and yeasts in soup fed to sows, the greater the likelihood of observing neonatal diarrhea in the flock. In addition, if the two microbiological criteria, total coliforms and yeasts are simultaneously degraded, the probability of observing neonatal diarrhea is maximum. This study therefore obliges us to systematically integrate an analysis of the soups distributed to sows in our diagnosis of neonatal diarrhea.

 

publications scientifique soupe non-fermentée distribuée aux truies
Infection by Mycoplasma suis is probably widespread and enzootic in France

Infection by Mycoplasma suis is probably widespread and enzootic in France

Scientific publication

Infection by Mycoplasma suis is probably widespread and enzootic in France

Mycoplasma suis was detected in all 10 farms and in all parities, suggesting that M. suis infection is probably widespread and enzootic. Nevertheless, in our study, based on recorded clinical signs and production, haematological and biochemical parameters, we could not demonstrate a significant impact of M. suis infection on health status and production performances of sow herds, except an increase in stillbirth rate in gilts.

Brissonnier et al., 2020- publication scientifique filière porcine
PRRSV : MLV detection at weaning after mass vaccination

PRRSV : MLV detection at weaning after mass vaccination

Scientific publication

PRRSV : MLV detection at weaning after mass vaccination

Processing fluids and blood samples at weaning were collected in four consecutive batches born after a booster sow mass MLV vaccination. We failed to detect PRRSV by qPCR on PF and BS collected in a positive-stable breeding herd after vaccination with a modified live vaccine.

SDRP détection du virus accinal au sevrage immediatement-apres une vaccination de masse