Comparatively, Immuno-prevalence of Bovine Leukemia Virus in Cattle Blood and Milk Samples by an IDEXX ELISA Technique

Bovine leukemia virus is an onchogenic pathogenic agent that affecting on bovine B-cell lineage and resulting in a long latency period-disease. In this study, a totally of (92) cattle were undergone for blood samples collection, which involved 44 lactating cows subjected, additionally, for milk samples collection, and then, both samples were submitted for serological examination by IDEXX ELISA test that applied for first time in Iraq. The overall seroprevalence results revealed that 14.13 % of blood samples and 6.82 % of milk samples were sero-positives. In relation to sex factor, the ser-positive infection rates were 7.41 % and 16.92 % in males and females, respectively, whilst in relation to age factor, the sero-positive infection results of (≥ 1-3), (3-5) and ( 5) years age’s groups were 3.23%, 10.81% and 33.33%, respectively. Statistically, the significant differences were reported between the sero-positive results for both tested samples, blood and milk, as well as within both sex groups and age groups at (P≥0.05) level.