just what i was told by the doctor
.The Chicken doctor. you see why they say that is because exposure could already be present in the older birds.That i cant possibly know if it has happened or not happened yet. but if exposure has Not happened it still will protect them although not ideal to wait until older. I'm sure if you want more information the doctor would be happy to speak with you about it. i told him the age of my birds and he did not say it was an issue but i will email again personally and get the information or documentation you request.il email now.
.The Chicken doctor. you see why they say that is because exposure could already be present in the older birds.That i cant possibly know if it has happened or not happened yet. but if exposure has Not happened it still will protect them although not ideal to wait until older. I'm sure if you want more information the doctor would be happy to speak with you about it. i told him the age of my birds and he did not say it was an issue but i will email again personally and get the information or documentation you request.il email now.