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Table 1 Local effects on milk 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 secretion 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

Normal milk

12

12

12

12

11

7

8

2

5

2

6

1

5

2

5

2

2

2

6

6

6

6

1

1

Watery milk, no clots

    

1

2

1

4

   

1

2

1

  

1

       

Milk, few small clots

      

2

3

3

4

1

3

1

3

2

4

3

3

    

2

1

Milk, several clots

     

2

1

2

2

3

2

4

1

2

4

3

3

4

     

1

Milk, many clots

     

1

   

2

  

2

1

1

1

2

2

      

Serous milk, mainly clots

        

1

1

1

3

 

2

 

2

 

1

      

Serum-like secretion

       

1

1

 

2

 

1

1

  

1

     

3

3

  1. audder secretion score represents signs of inflammation in milk secretion. 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. oli (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
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BMC Veterinary Research

ISSN: 1746-6148

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