Effect of Dietary Phosphate Deprivation on Red Blood Cell Parameters of Periparturient Dairy Cows.

ABSTRACT: Postparturient hemoglobinuria is a sporadic disease characterized by intravascular hemolysis and hemoglobinuria in early lactating dairy cows. The condition has empirically been associated with phosphorus (P) deficiency or hypophosphatemia; however, the exact etiology remains obscure. This paper summarizes two controlled studies investigating the effect of P deprivation during the transition period. In Study I, 36 late pregnant dairy cows were randomly assigned to either a diet with low, or adequate, P content from four weeks before calving to four weeks after calving. In Study II, 30 late pregnant dairy cows were again assigned to either a diet with low, or adequate, P for the last four weeks before calving only. Pronounced hypophosphatemia developed during periods of restricted P supply.

SUBMITTER: van den Brink LM 

PROVIDER: S-EPMC9913789 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature