Disease Challenges
Disease challenges facing poultry flocks*
There are many disease challenges facing poultry flocks so it is crucial to prevent diseases that could threaten your birds and your profits.
Nobilis Multriva® is available in combinations that offer the flexibility to match your local disease challenges – lowering the number of vaccinations required, reducing labor costs and improving chicken welfare.
*MSD Veterinary Manual. www.msdvetmanual.com
Rhinotracheitis
Avian rhinotracheitis (RT – also known as Turkey rhinotracheitis) caused by Avian metapneumovirus (aMPV) is associated with swollen head syndrome in broilers and broiler breeders.
Infection produces a drop in egg production and hatchability, as well as reproductive disorders.
In the reproductive tract of chickens, lesions can include egg peritonitis, ovarian and oviduct regression, folded shell membranes in the oviduct, and misshapen eggs.
aMPV is present almost worldwide in commercial poultry flocks.
Significant economic losses are often also due to secondary bacterial infections.
Infectious Bronchitis
Early infection of chicks by certain IBV strains may cause oviduct damages. The flock of affected hens may never reach normal levels of production due to a significant number of hens that do not lay eggs while not exhibiting clinical signs. This condition is called False Layer Syndrome.
Nephritis can be caused by some strains of infectious bronchitis virus (IBV).
It is recommended to perform constant IBV surveillance in the field as the virus continues to change.
Newcastle Disease
Newcastle Disease (ND) is an infection of domestic poultry with virulent ND virus.
It is a worldwide problem that presents primarily as an acute respiratory disease, but depression, nervous manifestations, or diarrhea may be the predominant clinical form.
Severity depends on the virulence of the infecting virus and host susceptibility.
Onset is rapid, and signs appear throughout the flock as early as 2 days after aerosol exposure.
ND can be successfully controlled by vaccination but no treatment is available.
Infectious Bursal Disease
Infectious Bursal Disease (IBD, also known as Gumboro disease) is seen in chickens worldwide and is caused by Infectious Bursal Disease virus (IBDV).
Signs can include depression, watery diarrhea, ruffled feathers and dehydration.
Morbidity is high and some very virulent strains are capable of causing 60% or higher mortality.
IBD is highly contagious. IBDV is shed in the faeces and transferred from house to house by fomites.
There is no treatment for IBD – therefore, control and prevention are key.
Avian Reovirus
Avian Reovirus (ARV) is ubiquitous in commercial poultry worldwide.
Viral Arthritis is a term used to describe inflammation affecting leg joints and/or tendons in poultry species that are attributable to ARV.
In cases that present clinically, chickens appear lame and may have ruptured tendons.
There are no treatment options, other than general supportive care, for chickens once clinically affected.
Egg Drop Syndrome
Egg Drop Syndrome (EDS) is a viral disease that, during the laying period, can produce considerable economic losses in laying hens. EDS can be found worldwide.
The disease is characterized by the production of pale, thin-shelled, soft-shelled, or shell-less eggs by apparently healthy laying hens.
The virus replicates in the shell gland and damages its surface epithelium.
There is no treatment for EDS.
Inactivated vaccines engineered with the needs of today’s poultry industry in mind.
Optimized vaccine combinations
Nobilis Multriva® is available in combinations that offer the flexibility to match your local disease challenges – lowering the number of vaccinations required, reducing labor costs and improving chicken welfare.
To find out more, please contact your local MSD Animal Health Representative today.
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