poultry health

what is resistance

it is the capability to overcome a disease

what is resilience

it is the capability to overcome a disease and meet production standards

what are conceptual standards of biosecurity

physical isolation

what are the structural standards of biosecurity

• farm layout

• perimeter fencing

• drainage

• change rooms

• housing desing

what are the procedural standards of biosecurity

• implementation

• bio-exclusion

• biocontainment

what is a primary and secondary risk

1. increases risk of disease

2. increases risk of complications

if the probability of event is in general low what events should we keep our eyes on?

high frequency events

what are aspect of host resistance in chickens

• physical barriers

• efficiency of immune response

what organs are part of the primary lymphoid system in the bird

• bursa, thymus, bone marrow

what is the ID50

it is the lowest possible dose of a disease that would infect the bird

what are control measures used to prevent spread of disease

1. biocontainment

2. chemoprophylaxis

3. immunizations

what are the two types of vaccinations

• live vaccines

• inactivated vaccines

how many types of avian influenza are there

4

what type of avian influenza has the most hosts

A

where did avian influenza originate from

china

what are the 3 depopulation methods

1. oc2 gas

2. foam

3. vent closure

when is co2 depopulation used

most commonly used on laying hens

when is foam depopulation used

most commonly used on ground birds

when is vent closure used

most commonly used towards the end of the outbreak

what is done for disposal after depopulation

• composting

• incinerate

• bury

what type of vaccine controls coccidiosis

live vaccine

what increases the chances for a chicken to catch e.coli

• nutrition

• environment

• parasites

what decreases the chances for a chicken to catch e.coli

• immunity

• nutrition

• physiologic

how would you treat e.coli

• vaccine

• antimicrobial drugs

how would you treat necrotic enteritis

treat with penicillin

how would you treat enteritis ulcerativa

prevent it though bedding and diet management

how would you treat gangrenous dermatitis

control it through biosafety measures and vaccines

how would you treat laringotraqueitis

vaccines and prevention of fomites

how would you treat fowl cholera

vaccines and antibiotics