WATT PoultryUSA - October 2015 - 37

P O U LT R Y H E A LT H TO DAY.CO M

Pathways to protection

PROGRAM

D

USING

NO R E C O M B I N A N T S

"

It really comes down to perceived need versus
cost of the recombinant. K A L E N C O O K S O N , D V M , M A M

X

Options for managing Marek's disease

When to consider it

Recombinant vaccines are a fairly recent addition to the
poultry-vaccine arsenal. Cookson estimates that over half of
all broiler operations still do not include recombinants in their
vaccination programs today.
"It really comes down to perceived need versus cost of the
recombinant," he explains.

Many producers still grow chickens without recombinants,
based on their flock history, good disease coverage with
their current vaccination plan and to avoid the higher cost
associated with recombinants.

which often results in
increased costs and
reduced disease coverage.
Producers and veterinarians
must rely on thorough
testing to pinpoint effective
vaccine choices and timing.
A combination of diagnostics
ranging from visual
inspection to PCR and

"

histopathology are needed
to correctly identify the
diseases and variants
present in their flocks.

For instance, the chickenembryo origin (CEO)
vaccine is vital in controlling
outbreaks of infectious
laryngotracheitis in medium
and large birds but can

SPECIAL ADVERTISING SUPPLEMENT

Of course, Marek's disease can be safely and effectively controlled
by using non-recombinant vaccines. The key is to adjust the
Marek's program to help provide adequate protection against
tumors and performance losses. For many broiler operations, this
has meant developing different vaccination programs for summer
and winter.

Options for managing IBD, ILT and ND

(See recommendations for each in Programs A and B.)

result in lost production and
income potential when used
in small birds due to fever
and inappetence associated
with vaccination.

The vaccination spectrum
ranges from in ovo vaccines
to day-of-age vaccines at
the hatchery to field
vaccines. The field vaccines,

in particular, can be stressful
for birds and increase
labor costs. The monetary
cost of the vaccine along
with often subtle production
costs associated with
vaccination are just two
of the many factors in
the decision process
associated with an effective
vaccination program.



Table of Contents for the Digital Edition of WATT PoultryUSA - October 2015

Contents
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WATT PoultryUSA - October 2015 - Contents
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