Changes of hematological parameters in dairy calves experimentally diseased with enterotoxigenic Escherichia coli

Abstract

A study was conducted on neonatal dairy calves which were diseased with enterotoxigenic E. coli from 1 to 3 days of age to determine changes of hematological parameters. Results showed that erythrocyte number, hemoglobin concentration, packed cell volume (PCV) were increased up to 7.39 x 10⁶/mm³, 11.26g% and 39,16%, respectively, after 72 hours of disease - induced. And then, the respective parameters went down to 5.16 x 10⁶/mm³, 8.46 g% and 28.47% after 240 hours. The leukocyte number fell down to 5.73 x 10³/mm³ after 72 hour of disease - induced, and then increased  up to 7.42 x 10³/mm³ after 240 hour. The contents of blood sugar, serum protein, and serum albumin were decreased while  serum globulin was increased during the time of experiment