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Use of California Mastitis Test, N-acetyl-β-glucosaminidase, and antitrypsin to diagnose caprine subclinical mastitis

Published online by Cambridge University Press:  01 June 2009

Päivi Maisi  and
Inna Riipinen
Päivi Maisi
Affiliation:
Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Hämeentie 57, 00551 Helsinki, Finland
Inna Riipinen
Affiliation:
Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Hämeentie 57, 00551 Helsinki, Finland
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Summary

Analysis of 448 milk samples (11 herds) from caprine udder halves showed that microorganisms were isolated from 21·8% of the samples. California Mastitis Test (GMT) and N-acetyl-β-glucosaminidase (NAGase) were superior to antitrypsin in detecting subclinical infections. Coagulase-negative staphylococci and micrococci were the main species isolated from halves showing no clinical disease. Coagulase-positive staphylococcal infections were associated with a significant increase of all inflammatory parameters. Significantly increased CMT and NAGase occurred when streptococci, other staphylococci or micrococci were present. Infection within one half was reflected as an increase in the inflammatory parameters in the milk of the infected half as well as a slight increase in the inflammation parameters in the adjoining half.

Type
Original articles
Information
Journal of Dairy Research , Volume 55 , Issue 3 , August 1988 , pp. 309 - 314
Copyright
Copyright © Proprietors of Journal of Dairy Research 1988

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References

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