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Immunoglobulins and lactoferrin concentration in milk and bacteria causing subclinical mastitis in dairy cows
2005
Kocina, I.(Latvia Univ. of Agriculture, Jelgava (Latvia))E-mail:iveta.kocina@pvd.gov.lv | Antane, V.(Latvia Univ. of Agriculture, Jelgava (Latvia)) | Lusis, I.(Latvia Univ. of Agriculture, Jelgava (Latvia))
Natural defence mechanisms of the mammary gland tissues play a vital role in protecting the gland from infections. The progress of mammary infection depends on the ability of bacterial pathogens to adapt to milk and udder tissues, and on the various virulence factors they activate, as well as on the cow's response. The levels of immunoglobulins (lg) and lactoferrin (Lf) concentration in the milk from dairy cows with and without subclinical mastitis were determined. In this investigation it was stated that 82.5% of samples were negative, but 17.5% of samples were positive for pathogens. Cows had subclinical mastitis caused by Coagulase negative staphylococci observed in 48.60%, Streptococcus uberis - 32.10%, Staphylococcus aureus - 18.90% of cases in milk samples. There were no significant differences between all classes of immunoglobulins concentration in the milk without pathogens and with pathogens. The lactoferrin concentration was significantly increased for 40.33% in the milk with pathogens.
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