I have a sick turkey. He was fine yesterday. This morning he didn't want to stand. He is doing some mouth breathing, sounds a bit raspy, breathing a bit heavy. I currently have him in the house since we are having a huge snow storm. I have Tylan 50, Vet Rx for poultry. Not sure what to use on him. He's about 7 months old and weighs about 50 lbs. Thanks for any help on what to do.