Electrical detection of subclinical mastitis

Blackshaw, C.; McGowan, Andy

doi:10.1080/00480169.1978.34583

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…The renewed interest in the use of conductivity measurements has resulted in the availability of many commercial instruments for use in mastitis monitoring programmes. Some of these instruments appear to work satisfactorily, but others do not perform as well as the manufacturers claim (Kitchen et al 1978a;Blackshaw & McGowan, 1978). Ultimately, the use of conductivity cells implanted in the claw of milking machines would provide the farmer with an 'on-the-spot', simple means of monitoring mastitis in the herd.…”

Section: Anions and Cationsmentioning

confidence: 99%

Bovine mastitis: milk compositional changes and related diagnostic tests

Kitchen¹

1981

Journal of Dairy Research

371

246

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Introduction Changes in milk composition Somatic cells Direct microscope somatic cell counts Electronic cell counting Fluoro-optical electronic cell counting Deoxyribonucleic acid estimations Detergent-based procedures Cellular metabolite determinations Major milk components Milk lipids Milk proteins Lactose Anions and cations CONTENTS 167 168 168 170 172 172 173 173 173 174 174 175 177 178 Enzymic changes Catalase Oxidases and reductases Lactate dehydrogenase Transaminase Lipases and esterases Phosphatases Glycosidases Effects on quality of milk and dairy products Conclusions References

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Section: Anions and Cationsmentioning

confidence: 99%

Bovine mastitis: milk compositional changes and related diagnostic tests

Kitchen¹

1981

Journal of Dairy Research

371

246

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Development and use of a droplet digital PCR (ddPCR) assay to achieve sensitive and fast atypical porcine pestivirus detection

Deng

Yang

et al. 2022

Braz J Microbiol

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The detection of mastitis in individual quarters using electrical conductivity or somatic cell concentration.

Sheldrake

Hoare

1981

New Zealand Veterinary Journal

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In this investigation electrical conductivity (EC) and somatic cell concentration (SCC) were compared in 3 herds for their ability to correctly identify the infection status of quarters. For EC, thresholds of 6.0 and 6.8 mS/cm were used and comparisons were made between quarters within each cow. The method of comparison between quarters was the same as that described by the manufacturers of the AHI Mastitis Detector. For SCC a threshold of 500 x 10(3) cells/ml was used. For both EC and SCC considerable variation was found between herds for sensitivity (the proportion of quarters infected with a major pathogen and detected as abnormal), and specificity (the proportion of quarters free from infection and detected as normal). The mean sensitivity and specificity of EC for the three herds was 49% and 79% respectively, whereas for SCC the means were 71% and 81% respectively. The variation in sensitivity and specificity of EC between herds was attributed to differences in the distribution of EC for quarters of similar infection status. It was concluded that these differences in herd EC precluded the use of pre-determined EC thresholds which were applicable for detecting mastitis in all herds.

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Electrical detection of subclinical mastitis

Cited by 4 publications

References 3 publications

Bovine mastitis: milk compositional changes and related diagnostic tests

Bovine mastitis: milk compositional changes and related diagnostic tests

Development and use of a droplet digital PCR (ddPCR) assay to achieve sensitive and fast atypical porcine pestivirus detection

The detection of mastitis in individual quarters using electrical conductivity or somatic cell concentration.

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