Fowl pox, Biology

Fowl pox

Fowl pox is a contagious disease of birds, caused by a member of family Poxviridae, characterized by wart-like nodules on the skin and diphtheritic necrotic membranes lining the upper digestive and respiratory system. Mortality is not usually significant unless the respiratory involvement is marked. The disease occurs in all age groups of birds and affects weight gain as well as egg production. The virus is highly resistant in dried scabs and under certain conditions may survive for months on contaminated premises. Pigeon pox virus and canary pox virus are the other two different but related strains that present similar clinical picture.

Fowl pox can be transmitted by direct or indirect contact. The disease may be mechanically transmitted by mosquitoes that may harbor infective virus for a month or more after feeding on affected birds. After the infection is introduced, it spreads within the flock by mosquitoes as well as direct and indirect contact. Recovered birds do not remain carriers.

Symptoms and lesions: Affected young birds are retarded in growth. Drop in egg production in laying birds is a constant finding. Birds with oral or respiratory involvement have difficulty in eating and breathing. The disease manifests itself in one or two ways, cutaneous pox (dry form) or diphtheritic pox (wet form). Dry pox starts as small whitish foci that develop into papules, pustules, pocks and scabs. The scabs eventually are sloughed off with healing if not complicated with secondary infection. Lesions are most commonly seen on the combs, wattles, feet etc. Wet pox is associated with the upper digestive and respiratory tract, particularly the mouth, esophagus, larynx and trachea. The lesions are diphtheritic in character and involve the mucous membranes revealing an ulcerated or eroded area.

Diagnosis: The clinical picture and lesions are adequately confirmatory. In some cases, laboratory diagnosis by virus isolation in chicken embryos or transmission studies is necessary.

Prevention and control: Disease can be prevented by biosecurity measures coupled with vaccination. In India, quality vaccine for fowl pox is available and used by wing web applicator that provides satisfactory immunity.

Posted Date: 9/18/2012 8:48:02 AM | Location : United States







Related Discussions:- Fowl pox, Assignment Help, Ask Question on Fowl pox, Get Answer, Expert's Help, Fowl pox Discussions

Write discussion on Fowl pox
Your posts are moderated
Related Questions
Define Hydroxybenzoic acid and Hydroxycinnamic acid? Hydroxybenzoic acid: e.g. ellagic and gallic acids, which are hydrolyzable tannins, present in berries and nuts. Hydroxy

What is the Mendel's first law? The Mendel's first law postulates that a characteristic (trait) of an individual is always verified by two factors, one inherited from the fathe

Q. Differentiate between adult and infant botulism? • Adult Botulism is prevalent amongst adults whereas Infant Botulism is prevalent in infants of less than one year of age.

What is Radiographic Template Radiographic Template : You should always use it while taking a panoramic radiograph of the patient. It is done to counter the effect of magnific

Other Complications :  Bioprosthetic valves have a tendency for degeneration, calcification or cusp perforation. Current models have overcome many of these problems. Calcification

Reasons for Uneven Distribution of Power The causes for uneven distribution of the power of regeneration among animals are not noticeably known. From a survey of the regenerat

Implant failures On the basis of the stage when problems occurs implant failures can be classified as : i) Before Abutment Connection. ii) During Abutment Connection.

What is Defective Colour Vision Defective colour vision is often called colour blindness. The ability to appreciate one or more of the primary colours is lacking. This can be e

Particulate Theory (i)         Maupertuis (1689-1759) proposed that the body of each parent give rise to minute particles. (ii)         In sexual reproduction, these particl

Q. What is Alzheimer's disease? The Alzheimer's disease is a degenerative disease of the central nervous system in which the patient has progressive dementia and alteration of