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Transfer Factor In Calf Rearing
Immunity and Diseases of Calves
Calves attain an immune profile from their dams. This profile depends on the diseases to which the dam has been
exposed and generally covers them for the first 12 weeks of their lives whilst they build up their own immune system
based on their own experiences and environment.
The ability of the dam to transfer this immune profile to the calf is limited to a very short window of opportunity.
The gut of the new born calf allows IgG of the cow to pass into the blood to provide this immune protection, but as
early as 4 hours after birth the process is slowing and within 24 hours the calf is no longer able to take in IgG
from the dam. More to follow on request ........
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