Table 2.
Udder parenchyma firmness after intramammary challenge of Q-/q-uniparous cows with S. aureus or E. coli
| Udder palpatory scorea | Time (h) relative to S. aureus challenge | Time (h) relative to E. coli challenge | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 12 | 24 | 36 | 48 | 60 | 72 | 84 | 96 | 0 | 12 | 24 | |||||||||||||
| Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | Q | q | |
| Soft | 1 | 1 | ||||||||||||||||||||||
| Soft, small knots | 8 | 9 | 5 | 7 | 2 | 4 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 3 | 5 | 2 | ||||||||
| Coarse, small knots | 3 | 3 | 6 | 5 | 9 | 7 | 6 | 10 | 9 | 9 | 8 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 3 | 1 | 1 | 3 | 1 | 2 |
| Coarse, large knots | 1 | 1 | 3 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 3 | 1 | 2 | ||||||||
| Firm, no subcutis edema | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | |||||||||||||||
| Quarter swelling | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | |||||||||||||
audder palpatory score represents signs of inflammation (firmness) of udder parenchyma. Animals with divergent haplotypes (Q/q) received intramammary challenge with S. aureus (24 animals (Q: n = 12 versus q: n = 12), 2 udder quarters) or E. coli (12 animals (Q: n = 6 versus q: n = 6), 1 udder quarter). For S. aureus-challenged animals, a mean score is given for two challenged udder quarters