Per Theilgaard

Objective: The objective was to compare Ca serum concentration and frequency of severe [Ca < 2.0 mmol/L] and moderate [Ca < 2.125 mmol/L] subclinical hypocalcemia (SCH) in cows supplemented according to the Dietary Cation Anion Differences (DCAD) principles or with synthetic zeolite.Materials and methods:The trials were performed in two large commercial farms in US and blood samples were tak ...

IntroductionMost cows undergo some level of hypocalcemia in the immediate postpartum period, with 40 to 70% of multiparous cows developing subclinical hypocalcemia (SCH; Reinhardt et al., 2011; Caixeta et al., 2015; Neves et al., 2017).Supplementing zeolite A in prepartum rations improves Ca status during the peripartum period (Thilsing et al., 2006; Pallesen et al., 2008).In European studies, fee ...

IntroductionMost cows undergo some level of hypocalcemia in the immediate postpartum period, with 40 to 70% of multiparous cows developing subclinical hypocalcemia (SCH; Reinhardt et al., 2011; Caixeta et al., 2015; Neves et al., 2017).Feeding prepartum rations low in Ca can improve Ca status postpartum (Kichura et al., 1982) but is difficult to achieve with commonly used feedstuffs in the US (Gof ...