Arylesterase activity of milk from normal and experimentally infected bovine mammary glands

Prasad, L.B.; Newbould, F.H.

Canadian Veterinary Journal 9(10): 230-236


After experimental infection of 11 cows with staphylococci, by intramammary infusion of 2-30 colony forming units (CFU) into 11 quarters and by teat duct inoculation (see DSA 30) with 268-1002 CFU into 11, foremilk samples were taken at each milking and stored in a deep-freeze until testing. A-esterase values were determined titrimetrically, using a slight modification of the method of Marquardt & Foster (DSA 28).