Table 1.
Experimental group | Negative control | Positive control | Teat seal | Teat seal + antibiotic |
---|---|---|---|---|
Total quarters treated | 528 | 528 | 505 | 505 |
New dry period clinical IMIs | 18 | 2* | 1* | 2* |
New IMIs at calving | 67 | 12* | 12* | 8* |
Total new IMIs | 85 | 14* | 13* | 10* |
% of quarters infected | 16.1 | 2.7* | 2.5* | 2.0* |
*The difference between any of the three treated groups and the negative control group was significant (p < 0.01) in all cases.