Table 5.
The effects of delivering L. johnsonii via different routes on the performance of broilers.1
| Item | Treatments2 |
SE | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| NC | PC | Oral – NC | Feed | Water | Litter | Oral – Pro | |||
| Day 1 to 7 | |||||||||
| BWG, g/bird | 157 | 158 | 156 | 155 | 156 | 157 | 158 | 1.57 | 0.87 |
| FI, g/bird | 156 | 157 | 154 | 157 | 155 | 160 | 160 | 2.88 | 0.67 |
| FCR | 0.995 | 0.998 | 0.988 | 1.010 | 0.995 | 1.017 | 1.015 | 0.02 | 0.94 |
| Day 1 to 21 | |||||||||
| BWG, g/bird | 854 | 874 | 854 | 851 | 856 | 867 | 862 | 9.22 | 0.54 |
| FI, g/bird | 1,201 | 1,222 | 1,201 | 1,198 | 1,202 | 1,216 | 1,210 | 9.27 | 0.48 |
| FCR | 1.407 | 1.398 | 1.407 | 1.410 | 1.403 | 1.403 | 1.405 | 0.01 | 0.67 |
| Day 1 to 35 | |||||||||
| BWG, g/bird | 1,797 | 1,816 | 1,794 | 1,800 | 1,792 | 1,792 | 1,824 | 11.44 | 0.31 |
| FI, g/bird | 2,899 | 2,935 | 2,891 | 2,908 | 2,883 | 2,899 | 2,952 | 27.05 | 0.55 |
| FCR | 1.623 | 1.617 | 1.622 | 1.636 | 1.619 | 1.637 | 1.634 | 0.02 | 0.99 |
| Mortality, % | 6.25 | 4.17 | 4.17 | 2.08 | 6.26 | 4.17 | 8.33 | – | – |
BWG = body weight gain; FI = feed intake; FCR = feed conversion ratio
1
Values are means (n = 6) and standard error of means (SE).
2
Dietary treatments: NC, negative control, with no additives added to the basal feed, water and litter; PC, positive control, with the antibiotic, zinc-bacitracin (ZnB, 50 mg/kg) added in feed; Oral-NC, negative control, with no additives added to the basal feed, water and litter, orally inoculated with PBS solution; Other treatments, with probiotic (Pro) L. johnsonii delivery by oral gavage, feed, water and litter, respectively.