Better immunity
During gestation of ruminants, horses and pigs a foetus is well protected from any antigenic stimulation due to the epitheliochorial placentation. It is, however,also deprived of maternal antibody provision. Thus, at birth, newborn animals have little or no developed immune system and are dependent on immunity acquisition from their mothers. If calves, foals or piglets are separated from their mothers just after birth and deprived of colostrum ingestion,their chance of survival is nil.
To ensure a good transfer of immunity,attention must paid to the immune system of the mother and the immune quality of the colostrum (immunoglobulin content)