BACKGROUND Acute puerperal metritis (APM) affects 30% of postpartum dairy cattle. Bacteremia negatively impacts survival in cattle with coliform mastitis. However, the prevalence of bacteremia in dairy cattle with APM is unknown. HYPOTHESIS Bacteremia is detectable in a large proportion of cattle with APM. ANIMALS Seventeen dairy cows with APM and 17 healthy dairy cattle. METHODS Prospect...

The energy metabolism of the English E-CMO strain of contagious equine metritis bacterium was studied in whole cells and cell extracts. This bacterium appears to have an active Krebs cycle and probably obtains energy by oxidative phosphorylation since glycolysis and the hexose monophosphate pathways appear to be absent. These conclusions are based on the findings that [U-14C]glucose incorporati...

was recovered from the external genitalia of associated stallions which did not show any clinical signs of disease.’ A full description of the organism, which does not identify with any known bacterium, will be published elsewhere.2 Inoculation of a pure culture of the organism into the uterine cervix of healthy pony mares results in an identical clinical condition in 2-3 days.3 Powell4 has giv...

Research exploring specific associations of markers negative energy balance and Ca in postpartum Jersey cows with lactation performance is lacking. Our objectives were to evaluate the total concentration (tCa) measured at 1 through 3 d milk (DIM) free fatty acids (FFA), ?-hydroxybutyrate (BHB), glucose DIM (1) risk multiparous being diagnosed early-lactation diseases culling, (2) production fir...

Staphylococcus hyicus has caused great losses in the swine industry by inducing piglet exudative epidermitis (EE), sow mastitis, metritis, and other diseases and is a threat to human health. The pathogenesis of EE, sow mastitis, and metritis involves the interaction between the host and virulent protein factors of S. hyicus, however, the proteins that interact with the host, especially the host...

The effect of seven diseases on culling was measured in 7523 Holstein cows in New York State. The cows were from 14 herds and had calved between January 1, 1994 and December 31, 1994; all cows were followed until September 30, 1995. Survival analysis was performed using the Cox proportional hazards model to incorporate time-dependent covariates for diseases. Different intervals representing sta...

The heightened susceptibility to infectious diseases in postpartum dairy cows is often attributed to immune dysfunction associated with the transition period. However, the cell populations involved in this immune dysfunction and the dynamics between those populations are not well defined. Monocytes play a crucial role in governing initial immune response in bacterial infections. Bovine monocyte...