Anticoagulated blood samples were collected from 40 goats. Fifteen of them were proved to be aborted at late stages of pregnency due to infection with chlamydia. Haematological studies were carried out on infected and non infected groups. The obtained results were as follow: There was a highly significant (P/ 0.01) decrease in total erythrocytic count and haemoglobin concentration in aborted group (infected group in comparison with other groups. Packed cell volume (P.C.V. in the infected group showed a significant decrease (P/ 0.05). The infected groups showed macrocytic normochromic anaemia.
Regarding total leucocytic count there was highly significant decrease in early parturient group while there was no changes in other groups. Differential leucocytic count revealed that there was a neutrophilia associated with lymphopenia in the blood of the aborted group.