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Vaccination of pregnant cows with K99 antigen of enterotoxigenic Escherichia coli and protection by colostrum in newborn calves |
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| Authors: | C. Valente G. Fruganti B. Tesei A. Ciorba P. Cardaras A. Floris E. Bordoni |
| Affiliation: | a Cattedra di Patologia e Profilassi delle Malattie Infettive, Università di Perugia, Italy b Istituto di Patologia Speciale e Clinica Medica, Università di Perugia, Italy c Istituto di Patologia Generale e Anatomia Patologica, Università di Perugia, Italy d Istituto Zooprofilattico Sperimentale, Perugia, Italy |
| Abstract: | The immune response to the K99 was tested in 45 pregnant cows, subcutaneously vaccinated, for protecting the newborn calves. Serological tests were performed in the blood sera of all animals and in the milk and colostrum sera; hemogram, inhibition of the adhesion to the brush border and histological tests were performed. The calves from vaccinated cows survived the experimental infection after the suction of colostrum in spite of the fact that the calves from control dams died with diarrhea. |
| Keywords: | Colibacillosis K99 dams vaccination calves protection colostrumAuthor Keywords: Colibacilloses K99 vaccination des vaches colostrum protection des veaux |
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