Table 1.
Sow group | Days after challenge with PEDV strain SQ2014 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
rSPV-St | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d |
Inactivated-SQ2014 | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d |
Inactivated-CV777 | +a/–b/-c/+d | ++a/+b/+c/+d | +++a/++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | ND | ND |
wtSPV | +a/–b/-c/+d | ++a/+b/+c/+d | +++a/++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | ND | ND | ND |
PBS | +a/–b/-c/+d | ++a/+b/+c/+d | +++a/++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | ND | ND | ND | ND |
ND: not determined due to the death of this piglet
a Severity of diarrhea: – no diarrhea; + mild diarrhea; ++ moderate diarrhea; +++ severe diarrhea
b Degree of appetite loss: – normal appetite; + slight loss of appetite; ++ moderate loss of appetite; +++ no appetite
c Loss of mental stability: - mental stability; + mentally unstable
d PEDV detection in feces by RT-PCR: - negative; + positive