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Table 2 Udder parenchyma firmness after intramammary challenge of Q-/q-uniparous cows with S. aureus or E. coli

From: In vivo model to study the impact of genetic variation on clinical outcome of mastitis in uniparous dairy cows

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

  1. 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