You can dose 1/2ml orally up to 7 days, no more than that. If there's no improvement, it means the tylan is ineffective and you'd have to use a different antibiotic. Baytril would be your next best choice. Remember that if it's a viral problem, antibiotics wont work. Baytril has a 5 day...
It's true that giving tylan 50 injectable orally takes longer to absorb into their system and there's a loss of potency, injecting is best. Dosing orally, is normally 1/2cc for standards, 1/4cc for smaller chickens, 1/10cc for chicks. Because of the time it takes to see improvements in the...