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Least squares mean (± SEM) concentrations of plasma E2, P4, INS, GH, IGF-1, IGFBP3, and LEP at 21, 50, and 55 d after calving for positive energy balance (PEB) (n = 15) and negative energy balance (NEB) (n = 15) dairy cows
T – treatment group; DIM – days in milk; T × DIM – interaction between treatment group and days in milk
