Association of blood calcium concentration in the first 3 days after parturition and energy balance metabolites at day 3 in milk with disease and production outcomes in multiparous Jersey cows

Research exploring specific associations of markers negative energy balance and Ca in postpartum Jersey cows with lactation performance is lacking. Our objectives were to evaluate the total concentration (tCa) measured at 1 through 3 d milk (DIM) free fatty acids (FFA), ?-hydroxybutyrate (BHB), glucose DIM (1) risk multiparous being diagnosed early-lactation diseases culling, (2) production first 9 wk lactation, (3) pregnancy 150 DIM. A cohort study was performed dairy herd Texas. Multivariable Poisson regression models built association analytes interest risks culling 60 (i.e., binary outcomes). Linear mixed used within a Cox proportional hazard model assess 380 final analyses. Total not associated metritis. Cows increased FFA BHB had an metritis clinical mastitis, respectively. Increased concentrations decreased tCa culling. Reduced (?1.84 mmol/L) 2 (?2.04 across compared above those thresholds. when assessed DIM, whereas (?0.37 (?2.96 production. None metabolites results demonstrate that show temporary cows. Although greater yield, it detrimental factor for This attempted better elucidate relationship tCa, FFA, BHB, early health Based on this study, assessments using ?1.99 mmol/L ?0.43 could be as starting points. More studies evaluating dynamics number herds are needed inform consultants critical levels exacerbated subclinical hypocalcemia breed.