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Figure 1.
Evolution of total protein, IGF-I, TGF-β1 and TGF-β2 concentrations in the first milking (< 12 h) colostrum and milk collected from five Holstein cows over a 21-day post-parturition period. Values are reported as mean ± SD of the mean and significant differences between two consecutive values are indicated (*P < 0.05; **P < 0.01; and ***P < 0.001).