WATT PoultryUSA - October 2015 - 32

POULTRY
H E A LT H
TODAY

INNOVATIONS AND PRAC TIC AL ADVICE FOR SUCCESSFUL FLOCK C ARE

B

roiler operations naturally want to provide the best
disease protection for the least cost, but deciding which vaccines
to use and when can be a daunting task.
First, there are so many variables to consider - not just disease
pressure and the emergence of new variants, but also geographic
location, proximity to other farms, temperature, litter moisture,
housing type, ventilation, lighting, bird density, target weight
and labor.

Poultry Health Today asked two experts with extensive
experience evaluating vaccination programs on hundreds
of farms - Kalen Cookson, DVM, MAM, and Lloyd Keck, DVM,
ACPV - for help in navigating the path to sensible, strategic
and cost-effective disease protection.

Square one

Then there's the overwhelming arsenal of vaccines. Producers
have a deep war chest of modified-live, inactivated, autogenous
and recombinant vaccines that can be administered in a variety
of ways, at different times - often in combination with
other immunizations.

What to use for Marek's disease is usually the first step
toward planning a broiler-vaccination program. Even though
the incidence of tumors is generally low in US broilers, the
Marek's disease virus is ubiquitous and always a potential
cause of immune suppression. "That's why all broiler operations
continue to immunize their flocks against this highly contagious
disease," Cookson says.

Every flock and farm is different and there's no such thing as a
blanket program. So how should broiler farms go about planning
cost-effective vaccination programs? And how does one vaccine
decision affect a poultry company's options for managing
other diseases?

While traditional live vaccines for Marek's are available,
many US broiler operations obtain Marek's protection from a
herpesvirus of turkey (HVT) recombinant vector vaccine



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

Contents
WATT PoultryUSA - October 2015 - Cover1
WATT PoultryUSA - October 2015 - Cover2
WATT PoultryUSA - October 2015 - Contents
WATT PoultryUSA - October 2015 - 2
WATT PoultryUSA - October 2015 - 3
WATT PoultryUSA - October 2015 - 4
WATT PoultryUSA - October 2015 - 5
WATT PoultryUSA - October 2015 - 6
WATT PoultryUSA - October 2015 - 7
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