title: Hematologic values in newborn beef calves.
abstract: Hematologic values were determined in 35 beef calves at birth, at 24 and 48 hours, and in 22 of these calves at 3 weeks after birth. Thirty calves did not have clinical signs of disease throughout the 3-week period. Variables that changed significantly over time in these healthy calves included hematocrit, RBC count, hemoglobin concentration, mean cell volume, mean cell hemoglobin concentration, WBC count, neutrophil-to-lymphocyte ratio, and plasma total protein and serum immunoglobulin concentrations. Of the 35 calves, 5 had clinical signs of disease at 3 weeks. Comparison of hematologic values from these calves with values for healthy calves revealed significant differences at each sample collection time, although disease was not evident at the 3 early sample times. The band neutrophil count and the neutrophil-to-lymphocyte ratio differed between the 2 groups at birth. At 24 hours, the monocyte count was higher in the 5 ill calves. At 48 hours, total leukocyte, mature neutrophil, and monocyte counts, and neutrophil-to-lymphocyte ratio also were higher in the 5 calves. At 3 weeks when clinical signs of disease were detectable in the 5 calves, the total leukocyte, band neutrophil, and mature neutrophil counts, neutrophil-to-lymphocyte ratio, and plasma total protein and fibrinogen concentrations were higher.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins 80523.
authors.forename: R
authors.initials: R
authors.lastname: Adams
authors.forename: F B
authors.initials: FB
authors.lastname: Garry
authors.forename: B M
authors.initials: BM
authors.lastname: Aldridge
authors.forename: M D
authors.initials: MD
authors.lastname: Holland
authors.forename: K G
authors.initials: KG
authors.lastname: Odde
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000097:blood*; D001772:Blood Cell Count / Q000662:veterinary; D001798:Blood Proteins / Q000032:analysis; D002417:Cattle / Q000097:blood*; D004909:Erythrocyte Indices / Q000662:veterinary; D005260:Female; D006400:Hematocrit / Q000662:veterinary; D006454:Hemoglobins / Q000032:analysis; D007136:Immunoglobulins / Q000097:blood; D008297:Male; D012016:Reference Values
chemical_list: D001798:Blood Proteins; D006454:Hemoglobins; D007136:Immunoglobulins