| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Department of Food Science and Technology, University College, Cork, Ireland
2 Department of Zoology, University College Dublin, Belfield, Dublin 4, Ireland
The influence of various factors on the concentrations of polymorphonuclear neutrophilic leukocytes (PMN) in milk samples from bulk tanks and individual cows was investigated. While somatic cell counts (SCC) and PMN level were in both cases significantly correlated, lower correlation coefficients were found between SCC and PMN for samples of bulk tank milks than for milk samples from individual cows. Furthermore, plots of PMN concentrations versus SCC showed great variability in PMN in milk samples of similar total SCC. One factor that may lead to variability in bulk tank PMN levels was shown to be increased proportions of high SCC milk in the bulk tank mixture, which result in relatively high PMN levels without excessive elevation of total SCC. In milk samples from individual cows, it was found that there was also a significant seasonal influence on milk PMN content, with milk from cows calving in the spring having, at SCC > 160,000 cells/ml, higher proportions of PMN in the total milk SCC than milk from autumn calving cows. The results of this study suggest that the concentration of PMN may be a useful indicator of herd status in bulk tank monitoring schemes.
Key Words: somatic cells • polymorphonuclear leucocytes • bovine milk
Submitted on December 15, 1998
Accepted on September 22, 1999
This article has been cited by other articles:
|
|
 |
|
  H. Sarikaya and R. M. Bruckmaier Importance of the sampled milk fraction for the prediction of total quarter somatic cell count. J Dairy Sci, November 1, 2006; 89(11): 4246 - 4250. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Sarikaya, G. Schlamberger, H. H. D. Meyer, and R. M. Bruckmaier Leukocyte populations and mRNA expression of inflammatory factors in quarter milk fractions at different somatic cell score levels in dairy cows. J Dairy Sci, July 1, 2006; 89(7): 2479 - 2486. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Barnouin, M. Chassagne, S. Bazin, and D. Boichard Management Practices from Questionnaire Surveys in Herds with Very Low Somatic Cell Score Through a National Mastitis Program in France J Dairy Sci, November 1, 2004; 87(11): 3989 - 3999. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Albenzio, M. Caroprese, A. Santillo, R. Marino, L. Taibi, and A. Sevi Effects of Somatic Cell Count and Stage of Lactation on the Plasmin Activity and Cheese-Making Properties of Ewe Milk J Dairy Sci, March 1, 2004; 87(3): 533 - 542. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Dosogne, F. Vangroenweghe, J. Mehrzad, A. M. Massart-Leen, and C. Burvenich Differential Leukocyte Count Method for Bovine Low Somatic Cell Count Milk J Dairy Sci, March 1, 2003; 86(3): 828 - 834. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
