New chicken into a Mareks - Positive flock
We've had our 4 eight month old chickens for about 6 weeks. We have had one death due to Mareks disease. We would like to get more chickens, what are the steps I need to take to ensure the new chickens stay Mareks free? If they have been vacinated, is that enough? Do they need to be of certain age? Thank you so much for any information or advice you share!