Of the cattle diseases that are of major economic importance to dairy farmers, mastitis has
proved to be the most refractory. It cannot be eradicated and although it is now possible to …

The periparturient period is associated with rapid differentiation of secretory parenchyma,
intense mammary growth, copious synthesis and secretion, and marked accumulation of …

This study examines the influence of parity, stage of lactation, and single isolations (ie, the
isolation of a microorganism that could not be reisolated in the same quarter in the next …

An enduring controversy exists about low milk cell counts and susceptibility to mastitis. The
concentration of milk leukocytes, or somatic cell count (SCC), is a well-established direct …

Somatic cells in milk include epithelial cells from the gland and leukocytes from the blood.
Epithelial cells are elevated in very early and late lactation. Leukocytes increase during …

Linear regressions and correlations between bulk tank somatic cell counts and (a)
prevalence of intrammary infection (n= 80),(b) test day average daily milk and fat production …

Major mastitis pathogens such as Staphylococcus aureus, Streptococcus agalactiae,
Streptococcus uberis, Streptococcus dysgalactiae, and the coliforms are usually considered …

Blood and milk were sampled and quarter California Mastitis Test scores were taken during
four 2-wk periods from 45 lactating cows. Vitamin A and β-carotene in plasma and milk were …

The potential value of electrical conductivity of milk as a screening test for subclinical
mastitis was evaluated. Conductivity of foremilk and of post-milking strippings from 368 …

by minor pathogens on new infections by major pathogens Page 1 Reprinted from the
AMERICAN JOURNAL OF VETERINARY RESEARCH, Vol. 49, No. 3 Pages 327-329. e …