Mean concentrations of crude protein, fat, carbohydrates and energy content in each of the lactation periods
| N | n | Protein (g/100 mL) | Carbohydrate (g/100 mL) | Fat (g/100 mL) | Energy (kcal/100 mL) | |
| 0–2 months | 25 | 8 | 1.09±0.15 | 8.50±0.30 | 4.07±0.36 | 76.4±3.5 |
| 2–4 months | 98 | 20 | 0.96±0.17 | 8.25±0.45 | 3.56±0.67 | 70.5±6.6 |
| 4–8 months | 381 | 63 | 0.93±0.16 | 8.44±0.61 | 3.52±0.70 | 70.3±7.4 |
| 8–12 months | 175 | 45 | 0.91±0.18 | 8.37±0.46 | 3.86±0.82 | 73.2±7.7 |
| 12–18 months | 91 | 12 | 0.88±0.19 | 8.35±0.48 | 4.62±0.78 | 80.0±7.7 |
| >18 months | 50 | 6 | 1.07±0.14 | 8.33±0.46 | 5.51±0.99 | 89.0±9.5 |
Values presented as mean±SD.
N: total number of samples included in the lactation period; n: total number of donors included in the lactation period.