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Physiological Threshold of Somatic Cell Count in Milk of Polish Heath Sheep and Polish Lowland Sheep Cover

Physiological Threshold of Somatic Cell Count in Milk of Polish Heath Sheep and Polish Lowland Sheep

Open Access
|Jan 2016

Abstract

The study was conducted on 320 sheep of two breeds: Polish Heath Sheep (PHS) and Polish Lowland Sheep (PLS). Udder health status was assessed based on somatic cell count (SCC) and bacteriological examination of milk. Cells of the immune system (leukocyte populations and lymphocyte subpopulations) were identified in the blood and milk of sheep by flow cytometry, using a panel of specific monoclonal antibodies and fluorescent dyes. The study showed that the highest proportion of neutrophils and a lower percentage of lymphocytes (CD4+, CD8+, CD19+, WC1-N2+) in milk and blood occurred in sheep of both breeds in which milk SCC ranged between 201 and 300×103 cells/ml. In light of existing research, these results suggest that fluctuations in somatic cell count of ewe milk are physiologically determined up to 200×103cells/ml and result from udder health disturbances above this level.

DOI: https://doi.org/10.1515/aoas-2015-0071 | Journal eISSN: 2300-8733 | Journal ISSN: 1642-3402
Language: English
Page range: 155 - 170
Submitted on: Sep 30, 2014
Accepted on: Oct 22, 2015
Published on: Jan 23, 2016
Published by: National Research Institute of Animal Production
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2016 Wiesław Piotr Świderek, Krystyna Małgorzata Charon, Anna Winnicka, Joanna Gruszczyńska, Mariusz Pierzchała, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.