I have recently got a new rooster with a hen and have them quarentined he seems very healthy he crows and clucks like a normal roo but I have noticed he keeps on sneezing nothing is coming out of his nostrils though.I went to the farm store and bought chlortetracycline soluble powder and I put some in his drinking water.Is this the right medicene becouse it said on the packet you can use it for chickens and is there anything else I can do to help my roo he is very nice to the hen he has he lets me pick him up and I love him very much.Can you plz help me?