Membrane Filtration Technique for Isolating Organisms from Raw Milk of Normal Udders1

AUTOR(ES)

Graves, Donald C.

RESUMO

The effectiveness of two methods for the isolation of bacteria from raw milk was investigated. Raw milk from normal udders was subjected to the direct membrane filtration technique and the 18-hr incubation technique. The results indicate that the membrane filtration technique gives a more complete picture of the flora of a normal udder than does the 18-hr incubation technique. Use of various methods for the isolation of organisms from milk samples may account for the extensive disagreement on the presence and types of organisms associated with normal and mastitic udders.

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