Importance clinique de pathogènes entériques dans la diarrhée péri-sevrage des porcelets et impact sur la contamination des carcasses par des pathogènes alimentaires

Parmi les différentes étapes de production, le sevrage des porcelets est un moment crucial ayant un impact important sur la productivité et la rentabilité des entreprises. Cette période représente en effet un risque élevée pour la transmission de maladies infectieuses à cause du stress qu’elle engendre et à cause de l'immaturité du système immunitaire au cours des premières semaines de vie. Les cas de diarrhées peuvent rapidement prendre des proportions épidémiques et avoir des conséquences dramatiques à l’échelle du troupeau.

AMH, predictive tool of ovarian response to a superovulation treatment in the cow

In dairy cows, future generations are created by embryo transfer techniques, which entail a superovulation treatment followed by fertilization in the field or in the laboratory. Due to enormous pressure exerted by breeders, cows are now superovulated very young, even before puberty and thereafter are superovulated routinely. Despite improvements in this technique, there is still variability in the ovarian response to treatment and loss of ovarian response after the 5th or 6th superovulation treatment.

Development of a sub-unit vaccine to protect swine against the infections caused by Streptococcus suis

Streptococcus suis is one of the most important causes of bacterial disease in post-weaned piglets. Affected animals suffer from meningitis (affected brain), endocarditis (affected heart), arthritis (affected joints) and septicemia (general infection). There are 35 serotypes of S. suis (same bacteria but different antigens). Some of these serotypes (such as serotype 2) can also affect humans (transmission from pigs), causing serious disease. Usually, veterinarians use antibiotics to treat and even protect animals.

Building on the Next Generation Tools for Genetic Improvement of Dairy Cattle

The profitability of dairy production is based on the ability of the animal to have high milk production, good health and good fertility. A major challenge for dairy producers is to select for high performing animals and avoid the undesirable correlated response between production and other traits.

Characterization of Lepeophtheirus salmonis resistance to common therapeutants

The sea louse (Lepeophtheirus salmonis) is the most economically important parasite that affects salmon farming and it is a cause for major environmental concern due to the risk of transmission to wild salmon population. The development of drug resistance in a number of L. salmonis populations to the most effective sea lice therapy - SLICETM diminishes the ability to control sea lice levels on farmed salmon.

Identification and assessment of bioactive yeast strains and cell wall components

Since yeast probiotics and their cell wall components (CWC) are being used to treat enteric inflammatory diseases in different species including humans, they may be useful for preventing Johne’s disease, a chronic inflammatory bowel disease of ruminants caused by Mycobacterium avium spp. paratuberculosis (MAP). Considerable variation in the efficacy of different yeast probiotics and their CWC has been reported; therefore we are proposing to develop in vitro assays that will allow us to assess potential anti-adhesive properties of yeast strains and CWC using MAP as a target pathogen.

Effect of novel iron chelators on cell growth inhibition by anti-mitotic drugs and irradiation

Iron is required for the growth of all animal cells, being necessary for the proper function of diverse enzyme systems and the expression of certain genes, as well as for the production of oxygen radicals that function as signal transduction intermediates and help defend against microorganisms.