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Table 1 Immunization and challenge

From: Recombinant proteins from Gallibacterium anatis induces partial protection against heterologous challenge in egg-laying hens

Protein

Challenge strain

No. of birds (day 0/35)a

GtxA-C

7990

20/19

GtxA-N

 

20/19

FlfA

 

20/17

Placebo

 

20/17

GtxA-C

IPDH 697-78

20/20

GtxA-N

 

20/20

FlfA

 

20/20

Placebo

 

20/15

GtxA-C

12656-12

40/38

GtxA-N

 

40/39

FlfA

 

40/36

Placebo

 

40/35

  1. Immunization with one of three recombinant proteins was done at day 0 and 14, followed by challenge with a G. anatis strain at day 35.
  2. a A total of 25 birds showed feather pecking behavior and were removed from the study between day 14 and day 35, in order to prevent development cannibalism among the birds.