Studies on the prophylactic effect of feeding probiotics, pathogen-specific colostrum antibodies or egg yolk antibodies in newborn calves

additif aux aliments des animaux aditivos de piensos antibodies anticorps anticuerpos bacillus cereus calostro calves colostrum crecimiento croissance diarrea diarrhoea eggs faeces feces feed additives flora microbiana flore microbienne gain de poids ganancia de peso growth heces huevos immunoglobuline immunoglobulins inmunoglobulina microbial flora oeuf probiotics probiotique ternero veau weight gain