Acute-phase response in dairy cows with acute postpartum metritis |
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Authors: | Hirvonen J Huszenicza G Kulcsàr M Pyörälä S |
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Institution: | Department of Clinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Helsinki, Finland. |
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Abstract: | The diagnostic value of 2 plasma acute-phase proteins, haptoglobin and alpha1-acid glycoprotein, and plasma N-acetyl-beta-D-glucosaminidase enzyme activity were studied in 29 newly calved dairy cows. Nineteen had developed acute metritis with putrid vaginal discharge within 2 wk after calving; 10 were clinically healthy controls. Plasma haptoglobin concentration remained low in most cows with acute postpartum metritis. Only the 3 most severely affected cows exhibited a strong haptoglobin response. These were later culled due to poor condition and reduced fertility. This suggests that in acute uterine infection a highly increased haptoglobin concentration indicates poor prognosis for repeat conception. Plasma alpha1-acid glycoprotein concentration increased in acute postpartum metritis, the response pattern being less prominent than that for haptoglobin. The alpha1-acid glycoprotein concentrations did not correlate with severity of disease, and, consequently, the capacity of alpha1-acid glycoprotein in differentiating genital infections was relatively poor. The highest alpha1-acid glycoprotein concentrations were detected in cows with retained placenta and/or dystocia. Plasma N-acetyl-beta-D-glucosaminidase activity levels did not differ between the cows with acute postpartum metritis and healthy control cows. |
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