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Antibodies Against Staphylococcal and Streptococcal Nucleases in Bovine Blood Serum and Milk
Antistoffer mot stafylokokknukleaser og streptokokknukleaser i blodserum og melk fra storfe.
Acta Veterinaria Scandinavica volume 21, pages 242–255 (1980)
Abstract
Antibodies against the nuclease of Staphylococcus aureus were demonstrated in 99 % and 60 % of samples of bovine serum and milk,, respectively. The titres of S. aureus antinucleases in milk and serum of cows with S. aureus mastitis were significantly higher than those in cows with no mastitis. The prevalence rate of S. aureus mastitis in the second lactation of cows which had not suffered mastitis during the first lactation period, was examined. Cows with high antinuclease titres in the milk during the first lactation had lower prevalence rate than those with low titres.
Antibodies against the nuclease of 8 streptococcal species were demonstrated in the serum samples. However, the frequency of occurrence and the levels varied. Antinucleases against S. agalactiae were, with one exception, exclusively found in samples from cows or herds with a recorded mastitis caused by this particular organism.
Sammendrag
Antistoffer mot nuklease produsert av Staphylococcus aureus ble påvist i 99 % og 60 % av prøvene av henholdsvis serum og melk fra storfe. Titeret av S. aureus antinukleaser i melk og serum fra kyr med S. aureus mastitt var signifikant høyere enn titeret fra kyr uten mastitt. Forekomsten av S. aureus mastitt i annen laktasjonsperiode ble undersøkt hos kyr uten mastitt i første laktasjonsperiode. Det var mindre forekomst av mastitt hos kyr med høyt antinukleasetiter i melken i første laktasjonsperiode sammenlignet med de med lavt titer.
Varierende mengder av antinukleaser mot 8 forskjellige streptokokker ble påvist med ulik frekvens i blodserum fra ku. Med ett unntak ble antinukleaser mot Streptococcus agalactiae utelukkende påvist i prøver fra kyr eller besetninger med diagnostisert mastitt forårsaket av denne bakterien.
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Gudding, R. Antibodies Against Staphylococcal and Streptococcal Nucleases in Bovine Blood Serum and Milk. Acta Vet Scand 21, 242–255 (1980). https://doi.org/10.1186/BF03546887
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DOI: https://doi.org/10.1186/BF03546887