[Morphological blood changes in calves with secondary immune blood transfusion shock caused by the recipients' immune erythrocyte isoantibodies].

Investigations were carried out with 10 clinically normal calves, aged 1 to 6 months, through transfusion of 2-4 cm3/kg incompatible isogenic blood against which the recipients had immune isoerythrocyte antibodies of 1:2 to 1:32 titers. All animals, were studied for hemoglobin content, total erythrocyte and leukocyte count, leukocyte formula, and erythrocyte sedimentation rate (ESR) prior to the transfusion of blood and at the 1st, 4th and 24th hour and on the 4th and 7th day. An abrupt drop of hemoglobin was established at the 1st and 4th hour following hemotransfusion, while the erythrocytes dropped at the 4th hour. Within the remaining periods of time these two indices fluctuated around the normal value. Low or high ESR/1 and 2 hours showed no connection with the changes in the erythrocyte count. Lasting leukopenia was established along with transient eosinopenia, well exposed neutropenia, lymphocytosis, and monocytosis.