Dr. Ashish RoyPANKAJ KUMAR2017-06-232017-06-232009http://krishikosh.egranth.ac.in/handle/1/5810022914Many species belonging to the class Mollicutes are pathogenic and of great economic concern in livestock production. The major health problem of small ruminants is pneumonia/pleuropneumonia, which may be caused by Mycoplasma species alone or in conjunction with other microbes. Pneumonia in small ruminants constitutes a serious setback to the growth of this group of animals with resultant economic losses in many parts of the world. There is one interesting group of six closely related Mycoplasmas named the Mycoplasma mycoides cluster, consisting of several ruminant pathogens. This group comprises the following species, subspecies, or strains: M. capricolum subsp. capricolum (Mcc, formerly M. capricolum), M. capricolum subsp. capripneumoniae (Mccp, formerly Mycoplasma sp. strain F38), M. mycoides subsp. capri (Mmc), the M .mycoides subsp. mycoides large-colony (Mmm LC), M .mycoides subsp. mycoides small-colony (Mmm SC) types and Mycoplasma sp. strain PG50.enVeterinary MicrobiologyStudyThesis