I wanted to repost this link, as I think that some of what is in here to be of good use:
http://www.lahinternational.com/pdf/General/AE_LAHI.pdf
As I have seen in other posts ....yes, the maternal antibodies only last for "four to six weeks. This is ample time for the bird to become immune...
I found another source for information on AE on the web from Lohmann Animal health international; for what it is worth (PDF File):
http://www.lahinternational.com/pdf/General/AE_LAHI.pdf
One interesting thing of note, is that it states that "once the clinical signs are over, the disease will...
Thanks for all your work on this MNKris, it is much appreciated. Without seeing your posts, I had contacted MM around noon today (as I have had many of the same problems as many of you). Their customer service representative was very helpful, and said they were aware of the problem and were...