NDST4 and Hypocalcemia: The top associated region for hypocalcemia is around 10,521,824 bp on BTA 6, where QTLs were reported for body/carcass weight and reproduction traits with nearby genes being Translocation Associated Membrane Protein 1 Like (TRAM1L1) and N-Deacetylase And N-Sulfotransferase (NDST4).