avian pox

1. Fowl pox
Presented By:
Dr Muhammad Awais Tatari

2. Fowl pox
Sore head
Avian diphtheria
Bird pox

3. Introduction
• Fowlpox is contagious viral disease.
• Bird of all age is affected by this disease.
• Chicken and turkeys are mainly affected by this
disease.
• Some viral type may also affect
pigeon,geese.pheasants and quills.
• 1-2% mortality rate.
• Incubation period 2-3 weeks.
• Fowlpox is seen worldwide.

4. Etiology
• The large dsDNA virus an avipoxvirus
belongs to family Poxviridae.
• Enveloped.
• Bricked shaped virus.

5. Transmission
• Mosquitoes are the most common vectors
for transmission of the avipoxvirus.
• The virus can also be transmitted indirectly
by contaminated surfaces or airborne
particles.
• Contaminated water and feed.
• Scales of disease bird also transmit the
disease.
• Through wounds.
• Vertical transmission is suspected.

6. Clinical sign
• Cutaneous form (Dry form)
• Diphtheritic form (wet form)
• Oculonasal form

7. Cutaneous form (Dry form)
• Warts like growths are seen on face, comb, wattle and
featherless part of the body.
• They grow readily and then yellow and later turn black
or brown lesion.
• After 2-3 weeks the lesion dry up and scabby.
• In some cases, lesions are limited chiefly to the feet and
legs.
• Cutaneous lesions on the eyelids may cause complete
closure of one or both eyes.
• This form is more common then other.

8. Diphtheritic form (wet form)
• White patches or slightly elevated
nodule occur inside the mouth and
tongue.
• The mucous membrane of mouth and
esophagus are affected.
• The breathing may be difficult.

9. Oculonasal form
• Eruption occur on the opening of eye
and nose.
• The ear and nose may swell and
discharge from eye and nose may be
seen.
• The affected bird do not eat and le idley.

10. Post mortem lesion
• The diphtheritic form is recognized by the
presence of nodular hyperplasia of the
mucosa of the pharynx and trachea.
• Chickens which die of diphtheritic pox may
show a plug of desquamated epithelium
which lodge in the glottis resulting in
asphyxiation.

12. Diagnosis
• Diagnosis Cutaneous lesions are
characteristic.
• Histological examination of affected tissue
will confirm the presence of intracytoplasmic
inclusions (Bollinger bodies) in the
respiratory mucosa and skin.
• PCR

13. Differential diagnose
• Necrotic dermatitis.
• Leg mites.
• Thrush and canker.

14. Prevention & Controls
• Using a mild-attenuated avipox, chicken-
strain virus vaccine administered at
approximately 8 weeks of age.
• In some areas, broilers are routinely
vaccinated against avian pox by
subcutaneous injection at day-old.
• All in all out program.
• Control mosquito. (anti mosquito spray)
• Biosecurity

15. Treatment
• Oxytetracyclin 300mg per gallon water for three days.
• Treat scabs with dilute iodine solution.
• Apply ointment to soften the scab. Mix 2 tablespoon of
sulfur powder with ½ cup Vaseline. Apply daily until
lesion heal.
• Mix diluted iodine solute on in flock drinking water. 1
teaspoon of 1% iodine solution per gallon of drinking
water.
• Sanitize drinking water.