Trace Elements Status During Different Production Stages and Parities in Holstein Dairy Cows

Abstract

Macro and microminerals are essential for dairy cattle health. The principal purpose of the current investigation was to explore the modifications of the blood levels of Copper (Cu), Zinc (Zn), Iron (Fe), Calcium (Ca), Phosphorus (P), and Magnesium (Mg) alterations during different production stages of clinically healthy dairy primiparous and multiparous cows. This study enrolled 20 healthy Holstein primiparous and multiparous dairy cattle (Ten primiparous and ten multiparous). Three blood samples were taken from each cow in close-up, early lactation, and mid-lactation phases. Samples were analyzed for Cu, Zn, Fe, Ca, P, and Mg levels. In the primiparous group, significant elevation in Cu, Zn, Ca, P, and Mg was seen in lactating groups compared to the prepartum group. Significant elevation in both P and Cu were detected in early and mid-lactating multiparous cows respectively compared to the prepartum phase. Serum Iron levels did not differ throughout different phases in primiparous and multiparous groups. The production stage strongly modified the trace elements profile in different parities. The parity and stage of lactation should yield more attention during the ration formulation and minerals mix supplementation.