Table 6.
Trial 1 with Version A | Trial 2 with Version B | |||||
Control | Low dose | High dose | Control | Low dose | High dose | |
Calves (n) | 34 | 35 | 38 | 39 | 38 | 32 |
Initial age (d) | 1.97 ± 0.20* | 2.43 ± 0.20 | 1.95 ± 0.18 | 2.10 ± 0.21 | 2.18 ± 0.21 | 2.06 ± 0.20 |
Weaning age (days) | 43.15 ± 0.86 | 40.91 ± 0.67 | 42.61 ± 0.69 | 39.90 ± 0.77 | 39.21 ± 0.77 | 38.69 ± 0.67 |
Initial BW | 40.6 ± 0.85 | 41.05 ± 0.64 | 40.71 ± 0.94 | 40.51 ± 0.73 | 41.0 ± 0.66 | 41.32 ± 0.71 |
Weaning BW | 80.5 ± 1.54 | 78.16 ± 1.35 | 78.45 ± 1.32 | 79.74 ± 1.12 | 80.85 ± 1.11 | 81.07 ± 1.41 |
ADG (kg/d) | 0.89 ± 0.03 | 0.91 ± 0.02 | 0.89 ± 0.02 | 0.98 ± 0.03 | 1.03 ± 0.03 | 1.03 ± 0.03 |
Weaned by 6 weeks of age (%) | 47.10 | 74.29† | 47.40 | 84.62 | 81.58 | 87.50 |
Total respiratory health score |
36 | 27 | 39 | 18 | 19 | 7 |
Total GI health score | 35 | 32 | 47 | 50 | 36 | 24 |
Total respiratory & GI health scores | 71 | 59 | 86 | 68 | 55 | 31† |
mean ± sem; BW, Body weight (kg); ADG, Average daily gain; Tx, Treatments;
P< 0.05.