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How to keep reovirus out of your flock
Reovirus infections in Canadian broiler flocks have seen a troubling surge in recent years. Primarily targeting joints and tendons, the pathogen causes viral arthritis and tenosynovitis. This leads to widespread lameness, compromised growth rates, increased mortality, and poor flock uniformity.
While veterinarians frequently recommend pain management remedies like aspirin to alleviate symptoms, these treatments carry a catch: they must be formally declared on the flock health declaration. This is an administrative requirement many poultry producers prefer to avoid. Prioritizing strict biosecurity and proactive prevention remains the best path forward to protect performance without regulatory complications.
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What is reovirus in chickens?
Avian reovirus is present in almost every commercial broiler flock, but most circulating strains are harmless. Recently, however, Genotype 4 (a hyper-pathogenic variant strain) has become increasingly prevalent across Canadian operations, frequently causing severe health issues and high cull rates.
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What are the symptoms of reovirus in broiler chickens?
Watch for these symptoms from week 2 to week 5:
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- Stunted birds
- Lameness
- Swollen (hock)tendons
- Uneven body weights
- Higher mortality or more rejections at slaughter
Application:
- Dosage: 1 liter per 1,000 liters of drinking water
- Duration: 4 consecutive days
- Repeat: If needed, give another 4-day course
Important: Clean drinker lines afterward with chlorine dioxide for best results.
Tip: Have your drinker lines checked for free before starting MS Flexfeed Motus.
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How to keep reovirus out
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