Table 1 Experimental animal group demographics and corresponding Staph. aureus Novel inoculums infused into challenge quarters
Group | Breed | Mean last week milk SCC (cells/mL) | Lactations completed | Mean days in milk | Mean last week milk yield (kg/day) | Staph. aureus inoculum (CFU) |
|---|---|---|---|---|---|---|
Group A | Holstein (n = 6) | 141 000 | 1 (n = 5) | 568 | 25.7 | 4300 |
3 (n = 1) | ||||||
Group B | Holstein (n = 6); Jersey (n = 3) | 126 000 | 1 (n = 7) | 391 | 28.4 | 6400 |
2 (n = 1) | ||||||
6 (n = 1) | ||||||
Group C | Holstein (n = 4) | 251 000 | 1 (n = 2) | 611 | 22.0 | 7500 |
2 (n = 1) | ||||||
4 (n = 1) |