Retained placenta on the proteinogram of Holstein cows

The aim of this study was to evaluate the influence of retained placenta on the proteinogram of Holstein cows from commercial dairy farms. Blood samples were collected from 129 animals with retained placenta (RP) and 145 animals with normal delivery and postpartum period, without any treatment, on following days: 1stday in milk (DIM), 2nd-3th, 4th-5th, 6th-7th, 8th-14th, 15th-29th, 30th-59thand 60th-90thDIM were analyzed. Protein electrophoresis were performed in acetate cellulose and sodium dodecyl sulfate polyacrilamide gel (SDS-PAGE), where 19 protein bands were observed with molecular weights between 23KDa and 187KDa. There was no influence on serum total protein and gamma globulins. Serum albumin remained below the normal reference values up to 90DIM. In conclusion, Holstein cows with RP have normoproteinemia with hypoalbuminemia up to 90DIM, presence of positive acute phase response by increase of haptoglobin, ceruloplasmin, acid glycoprotein, alpha and beta globulins and negative acute phase response by decreased of albumin within the first week postpartum.

bovine; puerperium; acute phase proteins; SDS-PAGE