Sickness behavior in dairy cows during Escherichia coli mastitis

Escherichia coli mastitis in the Dairy Bovine

Mastitis is a continuous concern for dairy producers in the US because of its economic consequences. Coliform mastitis accounts for 20-80% of acute clinical mastitis cases and includes gram-negative pathogens Escherichia coli, Klebsiella and Enterobacter species. Rapid identification of the causative organism is essential to implement a prudent treatment plan. Escherichia coli can be rapidly id...

Changes in thermal nociceptive responses in dairy cows following experimentally induced Escherichia coli mastitis

BACKGROUND Mastitis is a high incidence disease in dairy cows. The acute stage is considered painful and inflammation can lead to hyperalgesia and thereby contribute to decreased welfare. The aim of this study was to examine changes in nociceptive responses toward cutaneous nociceptive laser stimulation (NLS) in dairy cows with experimentally induced Escherichia coli mastitis, and correlate beh...

Prevention of clinical coliform mastitis in dairy cows by a mutant Escherichia coli vaccine.

A prospective cohort study was undertaken in two commercial California dairies. The treatment group, 246 cows, received three doses of a whole cell bacterin of J5 Escherichia coli (mutant of E. coli O111:B4) plus Freund's incomplete adjuvant vaccine (two in the dry period and one after calving) while 240 unvaccinated cows served as controls. Thirty-five cases of clinical coliform mastitis were ...

Prototheca Mastitis in Dairy Cows

Predictors of fatal outcomes resulting from acute Escherichia coli mastitis in dairy cows

To evaluate the prognostic criteria for identifying cows at an increased risk of a fatal outcome from acute Escherichia coli mastitis, the potential cut-off values for five diagnostic parameters associated with a high mortality were determined by receiver operator characteristic curve analysis. These criteria were hematocrit value >32%, blood non-esterified fatty acid concentration >0.4 mEq/l, ...