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Subject
Newcastle disease
[remove]
2
mortality
2
viruses
2
Avian orthoavulavirus 1
1
Influenza A virus
1
Mycoplasma gallisepticum
1
Netherlands
1
avian influenza
1
bacterial infections
1
case studies
1
chicken eggs
1
chickens
1
death
1
decolorization
1
drugs
1
egg drop syndrome
1
egg production
1
egg shell
1
eggs
1
farms
1