Leucogram, fibrinogen, plasmatic proteins and glucose evaluation in dairy cows before and after calving

Abstract

Article history Immunological deficiency observed during the transition period in dairy cows promotes development of puerperal diseases. Thus, the research aimed to evaluate hematological (leukogram) and biochemical (glucose, fibrinogen, and total proteins) parameters in Holstein cows (n = 44) before (day-20) and after (day +20) parturition and the possibility of identifying initial signs of reproductive illness, thereby assisting the professional in decision making. There was a difference in the number of total leukocytes, which decreased postpartum (8,888.4 cells/mm 3). There was no difference in neutrophils at both time points. Females who presented high concentration of fibrinogen (5.2 g/L) and total plasmatic proteins (78.9 g/L) at postpartum presented retention of fetal appendages and later uterine disease. These results are consistent with the literature on antepartum leukocytosis and inflammation indicated by increased fibrinogen and plasmatic protein and differ in terms of neutrophil behavior. Thus, laboratory assays can be complementary tools to physical examination, aiding in the diagnosis and identification of changes even before the appearance of clinical signs in animals, which is necessary for the prevention of metabolic and infectious disorders.

Health and Welfare Assessment of Beef Cattle During the Adaptation Period in a Specialized Commercial Fattening Unit

“…Herein, fibrinogen was significantly lower 15 days after arrival at the fattening unit, but it was still higher than the normal range for bovine. Fibrinogen is a marker of acute inflammation and stress in cattle (Ansiliero et al, 2019). In acute inflammatory conditions, fibrinogen reaches the highest peak and then declines, while in chronic inflammatory conditions the fibrinogen generally remains high as long as the disease is present and active (McSherry et al, 1970).…”