VPH Flashcards
Where do production animals mainly carry disease?
GIT
What are the main food borne zoonotic diseases?
E. Coli 0157
Salmonella
Campylobacter
Listeria
Yersinia
How is bacteria shed from production animal?
Faecal matter
Why are food borne diseases a problem to public health?
Subclinical disease goes un-noticed and becomes too late to control
How are food borne diseases transferred to humans?
Faecal matter contaminating carcass during abattoir process
What is the national control plan? NCP
- Reduction of salmonella in livestock
- Reduce salmonella infections in humans
What is the max % of positive tests in laying hen flocks?
2%
Clinical signs of salmonella
Enteritis
Septicaemia
Watery diarrhoea
Fever
Red/blue colouration of ears, limbs and back.
Pigs & poultry asymptomatic
What species is the host reservoir for E. coli?
Cattle - caecum and colon
What are sources of infection of E. coli?
Water
Food
Infected animals
How is E.Coli shed from cattle?
Faeces
How does the farm affect the spread of pathogens?
Stressed animals - opportunistic bacteria
Contaminated feed - vermin
Housing - horizontal transmission
Environmental survival - soil, faeces, slurry, bedding
How does transport affect the spread of pathogens?
Stress - opportunistic bacteria
Close proximity
How does lairage affect the spread of pathogens?
Close proximity
Fresh contamination
What are the disease prevention and control measures on farm?
Good hygiene practises
Vermin control
Feed management
Vaccinations
Monitor for disease.