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Concentration of (A) lactate, (B) non-esterified fatty acids (NEFA), (C) β-hydroxybutyrate (BHBA) in the serum of periparturient dairy cows with (■, n = 6) or without (◇; n = 6) lameness (LSM ± SEM; Hs = effect of health status; Wk = effect of sampling week; Hs × Wk = effect of health status by sampling week interaction).
