From: Disruption of the M949_RS01915 gene changed the bacterial lipopolysaccharide pattern, pathogenicity and gene expression of Riemerella anatipestifer
Groups
Challenge strains
Total no. of ducks
Protection rate (protected no./total no.)a
1
(RA1067 vaccine)
WJ4
8
7/8
Yb2
6/8
HXb2
2
(CH3 vaccine)
2/8
5/8
3
(Saline in adjuvant)
0