Total protein and some minerals in late stage of gestation and early lactation in dairy cows

Abstract

The study was conducted on 50 dairy crossbred pregnant cows from January until May 2014, for evaluating the total protein and some minerals parameters. Blood samples were collected from the jugular vein three times; at one week pre parturition, at parturition, and at a week after parturition, for measurement of serum total protein, calcium, and phosphorus, magnesium and iron concentrations. The results were indicated a significant (P˂0.05) decreases of total protein, calcium, phosphorus, magnesium and iron concentrations in calving period compared to pre calving and post calving periods. In conclusion, there was a significant decrease in minerals concentration (calcium, magnesium, phosphorus, iron) during pregnancy and lactation periods.