The importance of sampling time for online mastitis detection by using the electrical conductivity or measuring the Na+ and Cl- content in milk

M. Wiedemann; D. Weiss; G. Wendl; R.M. Bruckmaier

The importance of sampling time for online mastitis detection by using the electrical conductivity or measuring the Na⁺ and Cl^- content in milk

In: Precision livestock farming

Authors:

M. Wiedemann

M. Wiedemann ¹Bavarian State Research Center for Agriculture, 85354 Freising, Germany Institute of Agricultural Engineering, Farm Buildings and Environmental Technology

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D. Weiss

D. Weiss ²Institute of Physiology, Technical University Munich, 85350 Freising, Germany

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G. Wendl

G. Wendl ¹Bavarian State Research Center for Agriculture, 85354 Freising, Germany Institute of Agricultural Engineering, Farm Buildings and Environmental Technology

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, and

R.M. Bruckmaier

R.M. Bruckmaier ²Institute of Physiology, Technical University Munich, 85350 Freising, Germany

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Type:: Chapter

Pages:: 173–178

DOI:: https://doi.org/10.3920/9789086865154_027

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Electrical conductivity (EC), Cl^- and Na⁺ concentration (Cl, Na) in quarter milk samples with and without clinical mastitis were investigated with two independent experiments. In experiment 1 milk samples were taken during pre-stimulation. In experiment 2 four quarters were sequentially sampled within 90 s according to attachment routine of automatic milking systems (AMS). EC, Cl and Na in the first samples in experiment 1 were highly significant elevated (P < 0.001) in high somatic cell count (SCC) quarters as compared to low SCC quarters. During the course of prestimulation differences in EC and CL disappeared or were restricted to significant differences for Na (p < 0.05), due to the start of alveolar milk ejection. In experiment 2, the performance to detect an elevated SCC of more than 200.000 cells/ml was rather high in the first two sampled quarters, but was reduced with increasing time after the start of sampling. However, detection performance of elevated SCC can be improved by a combination of EC, Cl and Na measurements if the samples are taken within the first seconds after beginning the prestimulation.

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Precision livestock farming

E-Book ISBN:: 9789086865154

Publisher:: Wageningen Academic

Print Publication Date:: 10 Oct 2003

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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The importance of sampling time for online mastitis detection by using the electrical conductivity or measuring the Na+ and Cl- content in milk

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Precision livestock farming

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The importance of sampling time for online mastitis detection by using the electrical conductivity or measuring the Na⁺ and Cl^- content in milk