Poultry disease control Flashcards
When should we wait to do washing after a crop of chickens until
Until all manure removed from whole site as it could get back in when cleaning out next door house
Function of surfactants during washing process
penetrates and lifts up organic material
What extra vaccine might you give in pigs had been in the site before and turkeys there now
Erysipelas
Standard broiler vaccinations
Infectious bronchitis at day old then booster at 10-12 days
Infectious bursal disease vaccine at 18 days
Standard layer vaccines
Marek’s at hatchery
Infectious bronchitis and Newcastle disease
Infectious bursal disease
Avian infleunza
Salmonella
- + at point of lay do primer of Newcastle disease, INfectious bronchitis and Egg drop syndrome
What is the main reason for vaccine failure in flocks
Poor appliaction
What is the recommended sample size for any tests to ensure it is statistically significant
60 samples per airspace
But this isn’t really done
Which tests need heat treating of serum and which don’t
HI and RPA (rapid plate agglutination) do
ELISA doesn’t
What is haemagglutination inhibition useful for investigating
The serotype of infectious bronchitis virus
In rapid plate agglutination testing what are we detecting
Antibodies in the sera
–> Will get agglutination with antigens to form Ab-Ag complexes
What standard test would we use for mycoplasma
rapid plate agglutination
What standard test would we use for salmonella
Rapid plate agglutination
When should we test serum for proper antibody response to vaccine
3 weeks post vaccinatino
- Also often done in layers at 11 weeks, 16 weeks and point of lay
How often are routine sera taken and stored in a flock
every 6 weeks; as a reference set
What is clubbed down condition in chicks associated with
Deficiency of vitB2 and Zinc
FAV-1 (foul adenovirus)
