If you read the articles about mycoplasma, the whole flock can be presumed to be positive for MS, although only a few may have symptoms. Mycoplasma gallisepticum and sympnovitis are common in backyard flocks. Wild birds can be responsible for spreading it, but we can also bring it in to our flocks through adding new chickens or other poultry, and on our hands, clothes, or shoes if we have been around sick birds.
Baytril (enrofloxacin) is supposed to be a very good drug for treatment of either type of mycoplasma. Dosage of 10% Baytril liquid is 0.05 ml per pound or about 1/4 ml for a 5 pound hen, given orally twice a day for 5-6 days. Just realize that Baytril is banned in chickens, but if it is used, there is an unknown egg withdrawal—I would wait 30 days. I am going to tag one of our moderators, @TwoCrows who has dealt with MS. Here is a link where to buy Baytril (enrofloxacin) :
https://www.jedds.com/shop/misc/
Baytril (enrofloxacin) is supposed to be a very good drug for treatment of either type of mycoplasma. Dosage of 10% Baytril liquid is 0.05 ml per pound or about 1/4 ml for a 5 pound hen, given orally twice a day for 5-6 days. Just realize that Baytril is banned in chickens, but if it is used, there is an unknown egg withdrawal—I would wait 30 days. I am going to tag one of our moderators, @TwoCrows who has dealt with MS. Here is a link where to buy Baytril (enrofloxacin) :
https://www.jedds.com/shop/misc/