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Passive immunity occurs when 'preformed' antibodies are made in one animal and passed onto another. For example a cow passes on her own antibodies to her calf via colostrum (first milk after parturition) and milk.  

Passive immunity occurs when 'preformed' antibodies are made in one animal and passed onto another. For example a cow passes on her own antibodies to her calf via colostrum (first milk after parturition) and milk.  

Antibodies can be transferred to other individuals via colostrum, milk, crossing of the [[Gestation -Placenta - Anatomy & Physiology|placenta]], [[Vaccines - WikiBlood|vaccination]], and plasma transfusions.

Antibodies can be transferred to other individuals via colostrum, milk, crossing of the [[Placenta - Anatomy & Physiology|placenta]], [[Vaccines|vaccination]], and plasma transfusions.

'''3. Colostral and milk [[Immunoglobulins|antibodies]] protect neonates from infections'''

'''3. Colostral and milk [[Immunoglobulins|antibodies]] protect neonates from infections'''

==Passive transfer via [[Gestation -Placenta - Anatomy & Physiology|placenta]]==

==Passive transfer via [[Placenta - Anatomy & Physiology|placenta]]==

[[Image:Colostrum Intake.jpg|right|thumb|150px|Colostrum Intake - Copyright Prof Dirk Werling DrMedVet PhD MRCVS]]

[[Image:Colostrum Intake.jpg|right|thumb|150px|Colostrum Intake - Copyright Prof Dirk Werling DrMedVet PhD MRCVS]]

In the dam [[Lymphoreticular System - Anatomy & Physiology#B cells|B cells]] migrate from the [[Regional Lymphoid Tissue - Anatomy & Physiology|MALT]] to the [[Lactation - The Mammary Gland - Anatomy & Physiology|mammary gland]] where [[Immunoglobulins|antibodies]] are secreted into the colostrum and milk.

In the dam [[Lymphoreticular System - Anatomy & Physiology#B cells|B cells]] migrate from the [[Regional Lymphoid Tissue - Anatomy & Physiology|MALT]] to the [[Mammary Gland - Anatomy & Physiology|mammary gland]] where [[Immunoglobulins|antibodies]] are secreted into the colostrum and milk.

===Colostrum===  

===Colostrum===  

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[[Category:Materno-Fetal Immunity]]

 

 

 

 

 

 

 

 

 

[[Category:Materno-Fetal Immunity|A]]