Introduction:
(MG). These were a reduction in egg production of 10-20%, an increase in embryo mortality and chick mortality of 5-10% and a reduction in weight gain and feed conversion efficiency of 10-20%. In spite of the availability of vaccines, antimicrobial use continues to be the most economic method (Stipkovits et al, 1993) of controlling these infections, where the diseases are still endemic.
(MS), M. meleagridis (MM) and M. iowae (MI) and compare their resistance development over the last 25 years.
Table 1. Mycoplasma gallisepticum, MIC ranges (
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