Effect of serum calcium status at calving on survival, health, and performance of post-partum dairy cows and calves

摘要

Holstein dairy cows experiencing hypocalcemia at calving are more likely to experience dystocia, retain fetal membranes, and develop metritis or displaced ab-omasum, which affect survival, milk yield, and fertility. However, limited evidence is available in the literature about the effect of hypocalcemia (HYPO) of dams at calving on survival and health of calves. The objective was to assess the effect of clinical and subclinical HYPO (>8 mg/dL) at calving on survival, health, and performance of lactating dairy cows and calves.