Ccort
Crowing
Tractor Supply actually required a prescription for Tylosin, as does ChewyI live in southern Ohio, so we have the same climate. My chickens have always lived out in a wooden barn all winter and summer. The only time I felt they needed a little warmth was the 2 coldest weeks of early January when temps could be below 10. Since mine was an old drafty barn, I would just hang a very well secured heat lamp in the middle. It probably was not necessary though. Mainly I recommend providing good ventilation high up inside the coop in winter and summer. In winter I closed up the lower 2/3 of the windows during the coldest months, but they needed all the ventilation they could get in the humid summers. Chickens with exposure to MG can get symptomatic in cold winter or during a molt in hot summer. But there is no way to prevent that. Both Tylosin powder and Denagard are available without a prescription online.