Changes in penetrability of bovine papillary duct to endotoxin after milking
Schultze, W.D.; Bright, S.C.
American Journal of Veterinary Research 44(12): 2373-2375
1983
ISSN/ISBN: 0002-9645 PMID: 6362500 Document Number: 206094
The relative penetrability of bovine papillary ducts was assayed using frequency of inflammatory response to implantation of Escherichia coli endotoxin at a depth of 3 mm. Penetrability immediately after machine milking, compared with penetrability after delays of 10 to 480 minutes, indicated a decrease in frequency of penetrability to a minimum at 2 hours after milking, a decrease of about 75%. Four and 8 hours after milking, frequency of penetrability increased to about 55% of that measured immediately after milking.