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Asian-Australas J Anim Sci > Volume 24(3); 2011 > Article
Review Paper
Asian-Australasian Journal of Animal Sciences 2011;24(3): 429-438.
DOI: https://doi.org/10.5713/ajas.2011.10233    Published online February 22, 2011.
Relationship of Somatic Cell Count and Mastitis: An Overview
N. Sharma, N. K. Singh, M. S. Bhadwal
Abstract
Mastitis is characterized by physical, chemical and bacteriological changes in the milk and pathological changes in the glandular tissue of the udder and affects the quality and quantity of milk. The bacterial contamination of milk from the affected cows render it unfit for human consumption and provides a mechanism of spread of diseases like tuberculosis, sore-throat, Q-fever, brucellosis, leptospirosis etc. and has zoonotic importance. Somatic cell count (SCC) is a useful predictor of intramammary infection (IMI) that includes leucocytes (75%) i.e. neutrophils, macrophages, lymphocytes, erythrocytes and epithelial cells (25%). Leucocytes increase in response to bacterial infection, tissue injury and stress. Somatic cells are protective for the animal body and fight infectious organisms. An elevated SCC in milk has a negative influence on the quality of raw milk. Subclinical mastitis is always related to low milk production, changes to milk consistency (density), reduced possibility of adequate milk processing, low protein and high risk for milk hygiene since it may even contain pathogenic organisms. This review collects and collates relevant publications on the subject.
Keywords: Mastitis; SCC; Factors; Management


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