Serum Haptoglobin Concentration in Cattle

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  • CHAN Jacky Peng-Wen
    Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University
  • CHU Chia Cheng
    Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University
  • FUNG Hang Poung
    Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University
  • CHUANG Shih Te
    Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University
  • LIN Yung Chang
    Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University
  • CHU Rea Min
    Department of Veterinary Medicine, National Taiwan University
  • LEE Shuang Lin
    Department of Animal Science, College of Agriculture, National Chung Hsing University

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To obtain a basal concentration of serum Haptoglobin (Hp) in cattle in Taiwan, Hp concentrations were measured from serum samples collected from 10 healthy heifers, every week for one year. The values were also compared with those collected from 15 cows diagnosed with postpartum metritis. The heifers were successfully impregnated by artificial insemination six months after the tests. Hp concentrations were also measured in the serum collected from 11 other cows within 3 weeks after parturition. The Hp assay developed in this study gave a good correlation (r=0.893)with Western blotting. The Hp concentration of 454 serum samples from the 10 heifers had a mean value of 83.6 ± 34.1 mg/l, and there was no significant difference among individual heifers. The basal value of Hp in heifers was calculated as less than 73.6 mg/l. No significant difference in Hp concentration was observed among the 10 heifers during cold and warm seasons (19.8 ± 2.2 °C vs 27.3 ± 1.4°C), or before and after pregnancy. The mean serum Hp concentration from cows suffering from postpartum reproductive disorders was 1133.5 ± 627.1 mg/l, which was significantly greater than the serum of healthy heifers and postpartum cows (104.6 ± 61.0 mg/l) (P<0.05). These results demonstrate that Hp concentration may be a useful indicator for cows with postpartum reproductive disorders.<br>

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