Title: The Influence of Various Factors on Surface Tension and pH of Rumen Fluid
Abstract: The influence of various factors on surface tension and pH of rumen fluid of cattle was investigated. The pH of samples collected orally was higher than for samples collected via rumen fistula from the semi-solid stratum ventral and medial to the fistula. Surface tension values of rumen fluid collected by these two routes were similar. Surface tension of rumen fluid was increased by cooling from 37° C. to 15° C. but remained essentially constant in samples maintained at 37°, 27° and 15° C, respectively, for periods ranging from 1½ to 15 hours. Dilution of rumen fluid with water effected relatively minor changes in surface tension; values for mixtures of 1 part of rumen fluid to 100 parts of water were nearer those for rumen fluid alone than for water. Manual defoaming of rumen fluid samples reduced surface tension. The products examined (turpentine, defoaming agents of the methyl silicone and fatty acid types, and two detergents) markedly reduced surface tension of rumen fluid.
Publication Year: 1957
Publication Date: 1957-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 18
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