Evolution des anticorps anti rota dans le lait de vaches traitees en fin de gestation soit par le vaccin anti rota complet, soit par l'adjuvant seul

The authors describe the evolution of the secretion of anti-Rotavirus antibodies vaccine given three weeks before and repeated at the moment of parturition. Rota virus antibodies were detected at a high level during the three months test period with the Indirect Immunofluorescence Test, the seroneutralisation test and the immunofluorescence test. The four untreated animals excreted only rota-antibodies till day 6 post partum. Seroneutralising antibodies were detected in the milk of the vaccinated animals at a level of 10–50% of the colostral level till day 90. The aspecific stimulation of the excretion of anti-Rotavirus antibodies in the milk after inoculation of the only adjuvant fraction of the vaccine is confirmed. The excretion level, however, was significantly lower than after Rotavirus vaccination.