Feeding medicated chick started feed to them as chicks has worked great for me it has prevented coccidiosis and it doesn’t affect the eggs in the future, people have different opinions but, hey... here are my two cents.
The most common cause of blue or purplish combs in chickens is diseases. Any disease that causes pneumonia and reduces the level of oxygen in the blood will turn the comb bluish or purple. This is called cyanosis, simply meaning the blue disease. When the blood is well oxygenated, it has a...