Tylosin or doxycycline can be used together. Some pigeon sites recommend that, but tylosin or doxycycline can be used separately to treat MG in poultry. SMZ TMP and other sulfas are used more to treat coryza. Coryza symptoms are usually worse than MG and it is said to smell very bad. Did your sick birds have a bead odor from their beaks? If not, MG might be the cause, especially due to the bubbles in eyes.
It is kind of funny that the vet jumped to giving SMZ-TMP or sulfa antibiotics, and said not to give Tylosin, since tylosin is actually approved for chickens, while sulfa antibiotics are not. They are frequently given by vets though, and also treat coccidiosis and fowl cholera.
It is kind of funny that the vet jumped to giving SMZ-TMP or sulfa antibiotics, and said not to give Tylosin, since tylosin is actually approved for chickens, while sulfa antibiotics are not. They are frequently given by vets though, and also treat coccidiosis and fowl cholera.