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Bulletin No. 32 - Winter 2008
MiscelleanousImmunity
PAGOT E, POMMIER P, KEITA A
Effect of maternal cells transferred with colostrum on cellular responses to pathogen antigen in neonatal calves
Revue de Médecine Vétérinaire, 2007, Volume 158, Nº5, 253-259
The purpose of this study was to investigate the impact of maternal cells or cellular components on the immune responses to intracellular pathogens observed in neonatal calves. Cows were vaccinated against bovine viral diarrhoea virus (BVDV) and blood samples were collected before parturition, in order to assess the cellular proliferation response to BVDV. A total of 15 calves, born to these cows, were then selected and fed either with whole colostrum, frozen colostrum or cell-free colostrum. The cellular proliferation response to BVDV was then assessed in those calves. The results showed that the transfer of maternal cells from colostrum to calves did enhance the responses to BVDV antigens, thus suggesting that maternal vaccination could improve the transfer of responsive maternal leucocytes in colostrum.
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