My 3 year old Buff Orpington is gasping, but only when sitting. And she also has diarrhea. I've been giving her Tylan 50 orally for 3 days now. (I just can't give a shot). Her color is a little better, but I wonder if there is more I can do. Not sure if it's just respertory and/or worms. Everyone else is fine. Thank you for any input.