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Effects of parity and stage of lactation on adenosine triphosphate, somatic cell count and antitrypsin content in cows' milk

Published online by Cambridge University Press:  01 June 2009

Ulf Emanuelson ,
Thomas Olsson ,
Tiina Mattila ,
Göran Åström  and
Olof Holmberg
Ulf Emanuelson
Affiliation:
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
Thomas Olsson
Affiliation:
LKB-Produkter AB, Box 305, S-161 26 Bromma, Sweden
Tiina Mattila
Affiliation:
Department of Pharmacology and Toxicology, College of Veterinary Medicine, SF-00551 Helsinki 55, Finland
Göran Åström
Affiliation:
Department of Obstetrics and Gynaecology, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
Olof Holmberg
Affiliation:
Department of Veterinary Microbiology, Section of Clinical Microbiology, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden National Veterinary Institute, S-750 07 Uppsala, Sweden
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Summary

Significant effects of parity and stage of lactation were found on ATP content, somatic cell count and antitrypsin content when using morning milk samples from 39 cows over a period of 18 months. A close similarity was evident between variation in ATP and somatic cell count, except during the first 10 d after parturition when the variation in ATP was more pronounced. The same result was obtained in the whole material as well as in a healthy subset. This study shows clearly that parity and stage of lactation must be taken into account when establishing normal values for ATP as an indicator of mastitis.

Type
Original articles
Information
Journal of Dairy Research , Volume 55 , Issue 1 , February 1988 , pp. 49 - 55
Copyright
Copyright © Proprietors of Journal of Dairy Research 1988

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References

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