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Mortality survival percentage for preweaned heifer calves by days of age and serum IgG concentration categories. Corresponding to serum IgG levels of ≥15.0 mg/dL, 10 to 14.9 mg/dL, and <10.0 mg/dL were serum total protein categories of ≥5.4 g/dL, 5.1–5.3 g/dL, and <5.1 g/dL, and Brix score categories of ≥8.6%, 8.1–8.5%, and <8.1%, respectively. Color version available online.
