My baby chicks have been pooping blood for more than a week. I treated them with sulphadiazine Trimethoprim Bolus tablets as told by the store guy. I used the medicine for 5 days. But there has been no good result. I started deworming them with Albendazole. But still no result. My chicks are still roaming around happily. They have no visible symptoms. What should I do?