Santos RL, Tsolis RM, Bäumler AJ, Adams LG. Hematologic and serum biochemical changes in Salmonella ser Typhimurium-infected calves.
Am J Vet Res 2002;
63:1145-50. [PMID:
12171169 DOI:
10.2460/ajvr.2002.63.1145]
[Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE
To evaluate hematologic and serum biochemical changes in Salmonella ser Typhimurium-infected calves.
ANIMALS
16 male 3- to 4-week-old dairy calves.
PROCEDURE
13 calves were experimentally infected with S Typhimurium (strains IR715 and CS401, which are derivatives of ATCC 14028), and 3 calves were uninfected controls. Several hematologic and serum biochemical parameters were measured.
RESULTS
Hematologic changes included increases in PCV, RBC count, and hemoglobin concentration, associated with a transitory leukopenia characterized by neutropenia and lymphopenia. Biochemical findings included hypoglycemia, increased BUN, creatinine, and fibrinogen concentrations, and decreased sodium, total CO2, calcium, total protein, and albumin concentrations. Increased total bilirubin concentration associated with decreased conjugated bilirubin concentration was also observed. No significant changes in aspartate aminotransferase, gamma-glutamyltranspeptidase, alkaline phosphatase, and creatinine kinase activities were detected.
CONCLUSIONS AND CLINICAL RELEVANCE
Experimental salmonellosis of calves results in marked to severe dehydration, accompanied by metabolic acidosis, hypoglycemia, and an acute inflammatory response associated with increased fibrinogen concentrations and severe neutropenia immediately after inoculation.
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