ABSTRACT
The prevalence of haemoprotozoa in duck and pathological changes produced by these parasites were studied in different areas of Mymensingh district during July, 2007 to December, 2007. In this study 60% ducks were found to be infected with haemoprotozoa. Two species of haemoprotozoa were identified such as Leucocytozoon caulleryi and Leucocytozoon simondi. Prevalence of L. caulleryi (54.67%) was significantly (P