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Table 2 Isolation rates of pathogenic bacteria from positive milk samples *

From: Structural equation models to estimate risk of infection and tolerance to bovine mastitis

 

Staphylococci

Entero-cocci

Streptococci

Entero-bacteria

Bacilli

Number of cows

bH**

NonH

αH Esc + **

αH Esc-

βH

Lac + **

Lac-

βH

6

X

       

28

 

X

      

6

  

X

     

26

   

X

    

1

X

X

      

1

X

  

X

    

3

 

X

X

     

5

 

X

 

X

    

8

  

X

X

    

1

  

X

  

X

  

1

X

X

X

     

3

X

 

X

X

    

4

 

X

X

X

    

1

 

X

   

X

X

 

1

  

X

X

X

   

1

X

X

X

   

X

X

N positive samples

13

44

28

48

1

2

2

1

  1. *see M&M for decisional criteria (presence of strict anaerobes and mycoplasmas was not assessed); **H = haemolytic; Esc = hydrolysis of esculin on Edwards agar; Lac = fermentation of lactose on Gassner agar.
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Genetics Selection Evolution

ISSN: 1297-9686