Table 1.
Performance data (Mean ± SE) in calves fed with different AA supplementations.
| Group | Initial BW (kg) |
BW at biopsy (kg) | Initial age (days) | Age at biopsy (days) | ADG (g/d) |
|---|---|---|---|---|---|
| Ctrl | 44.2 ± 1.66 | 77.8 ± 1.73 | 3.3 ± 0.77 | 48.5 ± 1.04 | 740 ± 17.5 |
| GP | 47.2 ± 1.74 | 81.9 ± 2.46 | 2.4 ± 0.26 | 48.1 ± 0.83 | 759 ± 23.6 |
| FY | 42.3 ± 2.40 | 75.6 ± 2.58 | 2.6 ± 0.38 | 47.5 ± 0.96 | 740 ± 17.9 |
| MKT | 44.6 ± 2.70 | 80.8 ± 2.75 | 2.4 ± 0.65 | 47.6 ± 0.94 | 798 ± 26.9 |
Ctrl: Control milk replacer; GP: Milk replacer supplemented with glycine and proline; FY: Milk replacer supplemented with phenylalanine and tyrosine and MKT: Milk replacer supplemented with lysine, methionine and threonine (n = 8 per group). ADG = Average daily gain; BW = Body weight. Results were analysed by t-test for comparisons between Ctrl and treatment groups.