Table 2 Descriptive statistics on cows included in a study on vaccination with Startvac® in two herds
From: Vaccination against Staphylococcus aureus mastitis in two Swedish dairy herds
Cow data | Herd A | Herd B | ||
|---|---|---|---|---|
Vaccinated | Unvaccinated | Vaccinated | Unvaccinated | |
Cows, n | 239 | 240 | 126 | 151 |
Lactations, n | 245 | 240 | 129 | 155 |
SR, n (%) | 106 (21.9) | 208 (73.2) | ||
SH, n (%) | 360 (74.2) | 71 (25.0) | ||
SR*SH, | 17 (3.5) | 3 (1.1) | ||
Other, n (%) | 2 (0.4) | 2 (0.7) | ||
Primiparous, n (%) | 219 (45.3) | 101 (35.6) | ||
Cows at 1st milk recording | 463 | 281 | ||
Cows at 2nd milk recording | 458 | 280 | ||
Cows at 3rd milk recording | 449 | 275 | ||
Cows at 4th milk recording | 438 | 268 | ||