Abstract

The present work was concerned with an effect of the different parasitic infection in pigeon on some importance biochemical changes in these birds such as malondialdehyde level (the last produce of lipid peroxidation) and cholesterol level. Stale these mode of studies are limited. This study include two major steps, the first stage includes diagnosis many types of parasitic infections in the pigeon body, which divided in three main groups; Blood parasitic infection, Gastro intestinal parasitic infections, and Mixed parasitic infections. After that the study was designed to investigate the role of biochemical changes (Lipid peroxidation and cholesterol) associated with parasitic infection in pigeons. Results of the present study show that Many parasites were diagnosed like Haemoproteus sp, plasmodium sp, Eimeria sp, Ascaridia sp, and Subulura sp. Healthy pigeon showed a significant increase in serum malondialdehyde when compared with the parasitic infected pigeon, in three types of parasitic infection, however blood, gastrointestinal and mixed infection. In comparative between the types or three group of parasites in pigeons, we saw that significant increasing in malondialdehyde level in blood parasitic infection compared with gastrointestinal infected, while there's no significant change between gastrointestinal infected and mixed parasitic infected, also there's no significant changeable between blood infection and mixed parasitic infection. The cholesterol level in serum of pigeon didn't show a significant change between healthy and infected pigeon.