I have a 6 month old barred rock. No signs of laying yet, neither from her peers. For several months she has just been sick. She is lethargic, weak, doesn't eat well, weight loss, and poop fluctuates between runny and bright green. I have treated her for just about everything I can think of: anti fungal for sour crop, wormed with wazine and valbazen, 7 days of Terra-vet 10 (tetracycline), and she is now on day 4 of a 5 day treatment of Tylan 50 (orally). The most improvement was after the Terra-vet. For about a week her poop returned to normal and she seemed to gain a little weight. Then diarrhea and green poop again with rapid strength decline. The only thing that I have not treated (actively) for is mites. I sprinkle coop with DE periodically. Her skin looks healthy to me with no obvious mites or eggs. She is supplied with fresh plain water and ACV water (1 Tbsp/gal), layer crumble, fresh kitchen treats, dried mealworms, scratch, grit and oyster shell. She is sick of yogurt - won't eat that any more. No luck with scrambled eggs. HELP!! I would appreciate any suggestions.
If I were you, I would gather a few fresh droppings in a plastic baggie, and take them into your vet for a fecal float to see if she has coccidiosis or enteritis. Corid (amprollium) is the best treatment for that. Then give her a few days of probiotics and vitamins in her water to restore the good bacteria in her gut.