The Bacteriological Grading of Raw Designated Milk Supplies in Wales During 1925–47

Hughes, Ann E.

doi:10.1111/j.1471-0307.1949.tb00726.x

Cited by 1 publication

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thomas & Jenkins (1940) reported that in Wales during 1937-39, 28% of the tuberculin tested milk samples failed the methylene blue and/or coli-aerogenes tests compared with 33% of accredited milk samples. Thomas & Thomas (1945) placed approximately the same proportions, among fortnightly samples of tuberculin tested and accredited milks examined during 1944 by the routine resazurin test, in categories A, B and C. On the other hand Hughes (1949) found that 36% of the tuberculin tested milk samples examined in Wales during 194647 failed on the methylene blue and/or coli-aerogenes tests compared with 45% of the accredited milk samples.…”

Section: Performance Of Samples In Fhe Temperature-compensated Clot-omentioning

confidence: 95%

Temperature‐compensated Tests for Raw Milk Supplies. Part Iv. Studies on a Keeping Quality Test at 19–20°

Thomas¹,

Clegg²,

Nokes³

et al. 1951

Proceedings of the Society for Applied Bacteriology

View full text Add to dashboard Cite

SUMMARY: A field‐scale experiment carried out in Wales and the West Midlands, in which the temperature‐compensated clot‐on‐boiling (C.O.B.) test of Rowlands & Hosking (1951) was applied to 11,626 samples of designated milk, morning, mixed and evening milk, gave proportions of failures in the ratio 1:2:3 respectively. Despite temperature compensation, failures varied according to atmospheric temperature from c. 50% at 72°F. or more to 10% at 56°F. or less and averaged 20% during the summer and 7% during the six winter months. No marked differences were noted between the keeping qualities of tuberculin tested or accredited milk. During the winter no difference was found between producer‐wholesaler and producer‐retailer supplies, but the latter had a higher proportion of failures of evening and mixed milks during the summer. In a set of 8,297 samples examined in addition by the methylene blue and coli‐aerogenes tests, the C.O.B. test gave a lower incidence of failures than either the methylene blue or combined methylene blue and coli‐aerogenes tests throughout almost the entire year. It is suggested that a temperature‐compensated C.O.B. test is practicable as a routine procedure.

show abstract

Section: Performance Of Samples In Fhe Temperature-compensated Clot-omentioning

confidence: 95%

Temperature‐compensated Tests for Raw Milk Supplies. Part Iv. Studies on a Keeping Quality Test at 19–20°

Thomas¹,

Clegg²,

Nokes³

et al. 1951

Proceedings of the Society for Applied Bacteriology

View full text Add to dashboard Cite

show abstract

The Bacteriological Grading of Raw Designated Milk Supplies in Wales During 1925–47

Cited by 1 publication

References 4 publications

Temperature‐compensated Tests for Raw Milk Supplies. Part Iv. Studies on a Keeping Quality Test at 19–20°

Temperature‐compensated Tests for Raw Milk Supplies. Part Iv. Studies on a Keeping Quality Test at 19–20°

Contact Info

Product

Resources

About