A simplified procedure for confirming somatic cell counts of milk by the strip method

V. S. Packard; R. E. Ginn; R. D. Cook; W. Arledge

doi:10.4315/0022-2747-37.8.411

A simplified procedure for confirming somatic cell counts of milk by the strip method

V. S. Packard, R. E. Ginn, R. D. Cook, W. Arledge

Statistics (Twin Cities)

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Abstract

A practical method is described to reduce the number of strips counted in the confirmatory Direct Microscopic Somatic Cell Count (DMSCC) procedure. Using data from 4 commercial laboratories in widely differing geographic areas, and using a somatic cell standard of 1.5 million/milliliter of milk, the method was found to allow count discontinuance after the first strip from 47.3% of the time (where it was least effective) to 92.2% of the time (where it was most effective). Of 675 observations in the 4 sets of data, only 6 discrepancies were observed between results based on decisions made by this and the standard fixed sample size procedure.

Original language	English (US)
Pages (from-to)	411-413
Number of pages	3
Journal	J.MILK FOOD TECHNOL.
Volume	37
Issue number	8
DOIs	https://doi.org/10.4315/0022-2747-37.8.411
State	Published - Jan 1 1974

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abstract = "A practical method is described to reduce the number of strips counted in the confirmatory Direct Microscopic Somatic Cell Count (DMSCC) procedure. Using data from 4 commercial laboratories in widely differing geographic areas, and using a somatic cell standard of 1.5 million/milliliter of milk, the method was found to allow count discontinuance after the first strip from 47.3% of the time (where it was least effective) to 92.2% of the time (where it was most effective). Of 675 observations in the 4 sets of data, only 6 discrepancies were observed between results based on decisions made by this and the standard fixed sample size procedure.",

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AU - Packard, V. S.

AU - Ginn, R. E.

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AU - Arledge, W.

PY - 1974/1/1

Y1 - 1974/1/1

N2 - A practical method is described to reduce the number of strips counted in the confirmatory Direct Microscopic Somatic Cell Count (DMSCC) procedure. Using data from 4 commercial laboratories in widely differing geographic areas, and using a somatic cell standard of 1.5 million/milliliter of milk, the method was found to allow count discontinuance after the first strip from 47.3% of the time (where it was least effective) to 92.2% of the time (where it was most effective). Of 675 observations in the 4 sets of data, only 6 discrepancies were observed between results based on decisions made by this and the standard fixed sample size procedure.

AB - A practical method is described to reduce the number of strips counted in the confirmatory Direct Microscopic Somatic Cell Count (DMSCC) procedure. Using data from 4 commercial laboratories in widely differing geographic areas, and using a somatic cell standard of 1.5 million/milliliter of milk, the method was found to allow count discontinuance after the first strip from 47.3% of the time (where it was least effective) to 92.2% of the time (where it was most effective). Of 675 observations in the 4 sets of data, only 6 discrepancies were observed between results based on decisions made by this and the standard fixed sample size procedure.

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A simplified procedure for confirming somatic cell counts of milk by the strip method

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