Serum Biochemical and Hematological Measurements of Heat Tolerant (Zebu) and Cold Tolerant (Scotch Highland) Heifers

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Abstract
The serum biochemical and hematological measurements of heat tolerant (Zebu) and cold tolerant (Scotch Highland) cattle maintained under identical environmental conditions were compared using three purebred yearling heifers of each breed. There were differences between the mean serum concentrations, or activities, of the two breeds in glucose, cholesterol, urea nitrogen, total protein, creatinine, lactic dehydrogenase, alkaline phosphatase and glutamic-oxaloacetic transaminase. There were no differences between the two breeds in the mean serum concentrations of sodium, chloride, calcium, inorganic phosphorus, potassium, or total bilirubin. When the hematological measurements of the two breeds were compared, there were found to be differences in erythrocyte count, packed cell volume, hemoglobin concentration, mean corpuscular volume, mean corpuscular hemoglobin, leucocyte count, neutrophil percent and eosinophil percent. Copyright © 1971. American Society of Animal Science. Copyright 1971 by American Society of Animal Science.

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