What you are doing different donrae is that YOU ARE NOT buying from, breeding from, or hatching from stock infected with Salmonella Pullorum. You are doing everything right whether you know that you are doing everything right or not. Keep up the good work. Folks, only breed from and buy...
In now way is "pasted vents" or "Pasty Butt" a normal baby chick condition. Besides no mama hen is equipped with a tongue like a dogs' to clean her chicks' butt.
I am unsure but I think that you are seeing Salmonella Pullorum Disease in your chicks. Did the source of your mail order chicks...