does the immunoglubolins differ between human and mammels that produce milk resembling cows and sheeps and gaots?

immunoglobulins are the basis of the immune system and that isn't basically fighting infection but more importantly self-recognition.
immunoglobilins must be capable of bind to surface antigens to confirm whether the cell carrying the antigen is foreign or not, human immunoglobulins are most definately different to other animals'. For example if you needed a liver transplant and introduced a sheep's liver into your body your immunoglobulins whould identify it as foreign and reject it.
Also diseases that afect livestock do not affect humans so our immune systems are quite different.
I am contained by no doudt that the milk contains immunoglobulins since it is the way the young at heart animal builds its immune system. However they would be completely incompatible with the human body and they would only just be broken down, also if you think more or less it immunoglobulins are large protein molecules which cannot be wrapped up by the digestive system without person broken down, in which travel case they would be useless anyway.
The fundamental reason for this incompatibility is the reality that human DNA is different to cows DNA ect. so the immunoglobulins coded for by the cow's DNA are useless to humans.