مطالعه فراواني و تنوع گونه‌اي آيمريا در گاو و گاوميش در شهرستان تبريز

A survey of frequency and diversity of Eimeria species in cattle

Prevalence and diversity of Eimeria spp. in relation to age, sex and fecal concentration were investigated on cattle and buffalo in Tabriz region, Iran. In the present study, results indicate that the prevalence of Eimeria infection in cattle, calves, buffalo and buffalo calves were 46.2%, 53.8%, 50.6% and 49.4%, respectively. A number of seven species of Eimeria in cattle were identified including E. wyomingensis (25%) of caecum and colon, E. zurneii (20%) of caecum and colon, E. bovis (20%) of small intestine, E. cylindrica (10%) of small intestine, E. mundargi (10%) of intestine contents, and E. subspherica (10%) of duodenum and jejunum, E. bombayensis (5%) of intestine contents. A number of eight Eimeria species including E. zuernii (35%) of caecum and colon, E. buhidnonensis (20%) of intestine contents, E. bovis (10%) of small intestine, E. cylindrica (10%) of small intestine, E. pellita (10%) of intestine contents, E. aubnrnensis (5%-) of jejunum and ileum, E. illinoisensis (5%) of caecum and colon and E. canadensis (5%) of duodenum and jejunum were identified in buffalo. These species were mixed in both ruminants. In addition, maximum rate of infection observed in male calves of cattle (54%) younger than one year-old and buffalo calves (50.2%) with similar age condition. Maximum range of ova per gram of feces was determined in cattle (431-1232) between 2-5 year-olds and buffalo calves younger than one year-old (582-1302).