Table 2.
Influence of feeding an eubiotic blend of essential oils plus 25-hydroxy-vit-D3 on growth-performance of calf-fed Holstein steers.
Dietary treatments 1 | SEM | |||
---|---|---|---|---|
CON | MON, 30 mg/kg | EO+HYD, 200 mg/kg | ||
Weight, kg | ||||
Initial | 153.8 | 155.7 | 156.3 | 3.3 |
112 d | 326.4 | 331.2 | 333.8 | 5.4 |
286 d | 583.5 | 595.9 | 599.4 | 7.8 |
Average daily gain (kg) | ||||
1–112 d | 1.55 | 1.58 | 1.59 | 0.031 |
112–286 d | 1.47 | 1.51 | 1.52 | 0.035 |
1–286 d | 1.50 | 1.54 | 1.55 | 0.021 |
Dry matter intake (kg/d) | ||||
1–112 d | 6.66 | 6.62 | 6.57 | 0.137 |
112-286 d | 9.23 | 9.22 | 9.30 | 0.213 |
1-286 d | 8.15 | 8.13 | 8.16 | 0.155 |
Gain to feed ratio | ||||
1–112 d2 | 0.233b | 0.239ab | 0.244a | 0.003 |
112-286 d | 0.159 | 0.164 | 0.163 | 0.003 |
1-286 d | 0.184 | 0.190 | 0.190 | 0.002 |
Net energy for maintenance (NEm), Mcal/kg | ||||
1–112 d2 | 2.02b | 2.07ab | 2.10a | 0.021 |
112-286 d | 2.23 | 2.29 | 2.29 | 0.023 |
1-286 d2 | 2.19b | 2.26a | 2.26a | 0.020 |
Net energy for gain (NEg), Mcal/kg | ||||
1–112 d2 | 1.36b | 1.40ab | 1.43a | 0.019 |
112-286 d | 1.55 | 1.60 | 1.59 | 0.020 |
1-286 d2 | 1.51b | 1.57a | 1.58a | 0.017 |
Observed/expected NEm | ||||
1–112 d2 | 0.91b | 0.94ab | 0.95a | 0.009 |
112-286 d | 1.01 | 1.04 | 1.04 | 0.010 |
1-286 d2 | 0.99b | 1.02a | 1.02a | 0.009 |
Observed/Expected NEg | ||||
1–112 d2 | 0.89b | 0.92ab | 0.94a | 0.012 |
112-286 d | 1.01 | 1.05 | 1.05 | 0.013 |
1-286 d2 | 0.99b | 1.03a | 1.03a | 0.012 |
1 Treatments: CON: control no antibiotic; MON, monensin (Rumensin 80, Elanco Animal Health, Greenfield, IN) and Crina® + (D.S.M. Nutritional Products) is a eubiotic blend composed of thymol, eugenol, limonene, and vanillin combined with HyD® (25-hydroxyvitamin D3) supplemented to provide 200 mg/kg DM Crina® (dosage 0.1g/kg D.M.) plus HyD® (dosage 0.1mg/kg D.M.).
2 Means in a row with different superscripts differ (P ≤ 0.05).