Table 6.
Mean percentage of preweaned dairy calves receiving antimicrobial therapy between birth and weaning with different antimicrobial drugs.
| Antimicrobial drug | Mean | SE | N | 95% CI | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Liquid feed (milk or milk replacer) | |||||
| Neomycin sulfate | 62.8 | 15.2 | 10 | 28.4 | 97.1 |
| Chlortetracycline | 44 | 22.9 | 5 | 0 | 100 |
| Neomycin-oxytetracycline | 36.3 | 21.5 | 4 | 0 | 100 |
| Spectinomycin | 27.5 | 22.5 | 2 | 0 | 100 |
| Oxytetracycline | 56.7 | 23.3 | 3 | 0 | 100 |
| Sulfamethazine | 29.2 | 14.6 | 6 | 0 | 66.3 |
| Coccidiostats | 100 | 0 | 4 | – | – |
| Other | 100 | – | 1 | ||
| Solid feed (grain) | |||||
| Chlortetracycline | 52.5 | 47.5 | 2 | 0 | 100 |
| Neomycin-oxytetracycline | 10 | – | 1 | – | – |
| Oxytetracycline | 70 | 30 | 3 | 0 | 100 |
| Sulfamethazine | 5 | – | 1 | – | – |
| Coccidiostats | 95.6 | 3.29 | 16 | 88.6 | 100 |
| Water | |||||
| Neomycin sulfate | 5 | – | 1 | – | – |
| Chlortetracycline | 7.5 | 2.5 | 2 | 0 | 39.3 |
| Neomycin-oxytetracycline | 100 | 0 | – | – | |
| Spectinomycin | 50 | – | 1 | – | – |
| Oxytetracycline | 5 | 1 | |||
| Sulfamethazine | 75 | 25 | 2 | 0 | 100 |
| Bacitracin | 100 | – | 1 | – | – |
| Coccidiostats | 51.7 | 17.4 | 6 | 7.1 | 96.3 |
| Other | 5.5 | 4.5 | 2 | 0 | 62.7 |
The mean percentage was calculated for number of responses (N) for a given antimicrobial compound.