Table 3.
Administration routes for antimicrobial drugs used in calvesa and in cows/heifersb at the animal and herdc level between January 1 and June 30, 2002d.
| Treatment | Percent (number) of calves | Percent (number) herds reporting calf treatment | Percent (number) of cows/heifers | Percent (number) herds reporting cow/heifer treatment |
|---|---|---|---|---|
| Injectable antimicrobials | 8.4 (2400) | 80 (162) | 1.8 (658) | 61 (123) |
| Oral and injectable antimicrobials | 3.0 (852) | 46 (93) | <0.1 (6) | 2.5 (5) |
| Oral antimicrobials | 1.8 (512) | 39 (80) | <0.1 (3) | 1.0 (2) |
| Other treatmente | 0.6 (173) | 30 (61) | 0.3 (91) | 23 (46) |
| Fluids | 0.4 (123) | 27 (54) | <0.1 (1) | 0.5 (1) |
a
Total number of calves enrolled, n = 28,753.
b
Total number of cows enrolled, n = 36,634.
c
Total number of herds enrolled, N = 203.
d
Any individual animal may have been treated with more than one type of treatment.
e
Other treatment includes; treatment with mineral oil, vitamin injections, etc.