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Hyperacute Escherichia coli mastitis of cattle in the immediate post‐partum period
Author(s) -
FROST A J,
BROOKER B E
Publication year - 1986
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.1986.tb02876.x
Subject(s) - mastitis , infiltration (hvac) , parenchyma , lumen (anatomy) , lactation , mammary gland , post partum , lesion , biology , bacteria , pathology , microbiology and biotechnology , epithelium , birth canal , coliform bacteria , medicine , pregnancy , physics , genetics , cancer , breast cancer , thermodynamics
SUMMARY The pathology of hyperacute coliform mastitis was studied in 5 postparturient cows. In all infected quarters infiltration of neutrophils was negligible. In all except one case there was severe damage to the ductular and secretory system, involving most areas of the gland. Bacteria were dense in infected alveoli, and there was evidence of substantial phagocytosis of bacteria by the secretory epithelium. The exception showed a large lesion in the middle of the gland from which the spread was ductular; other infections were consistent with spread via the teat canal. The organisms were largely confined to the ductular/secretary lumen and there was little invasion of the parenchyma. The severity of the disease was considered due to the absence of the inflammatory response seen in mid lactation.