Ducks and chickens older than 20 weeks are not as likely to suffer from coccidiosis infection unless they are immune compromised or very run down. I would treat all youngsters chickens, and any others that appear lethargic, hunched or puffed up, or looking weak. Most healthy birds will build up...
Make sure that your Corid mixture is 1 1/2 tsp of powder or 2 tsp of the liquid per gallon of water for 7 days. They have to drink enough of the fluid to get the proper dosage. Mixing a concentrate of 1 1/2 tsp of the powder to 2 tsp of water and give 2 drops orally twice a day, or use the...