Fowl pox

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.

1. Chapter#12 Fowl pox Presented By: Amjad Khan Afridi

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 lay down .

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.

11. Diagno s is 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

12. Differential diagnose Necrotic dermatitis. Leg mites. Thrush and canker.

13. 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

14. 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.