Fowl cholera, Biology

Fowl cholera

Fowl cholera, a highly contagious disease of poultry caused by Pasteurella multocida, was one of the first infectious diseases to be recognized by Louis Pasteur in 1880. The infection can range from acute septicemia to chronic and localized infection and in acute cases, very high morbidity and mortality that may reach up to

100%. Predisposing factors include high density and concurrent infections such as respiratory viruses. The disease is transmitted via oral or nasal route. The bacterium is susceptible to environmental factors and disinfectants, but may persist for prolonged periods in soil. Reservoirs of infection may be present in other species such as rodents, cats and possibly pigs.

P. multocida is non motile Gram-negative coccobacillus. Capsule is seen in freshly isolated culture. It can grow both aerobically and anaerobically. The bipolar nature of the bacteria is the characteristic feature on staining with methylene blue or Leishman' stain and is helpful in easy identification.

Symptoms and lesions: Ruffled feathers, loss of appetite, coughing, nasal, ocular and oral discharge, swollen and cyanotic wattles and face are the common signs. In some cases, diarrhoea, swollen joints, lameness may also be seen.  Sometimes PM changes are not seen or limited to hemorrhages at few sites but generally focal hepatitis, consolidation of lungs, suppurative pneumonia (especially in turkeys), cellulitis of face and wattles, purulent arthritis or enteritis are noted.

Diagnosis: Typical bipolar stained, dumbbell-shaped organisms are seen in blood smears/ impression smears. Isolation can be easily done by aerobic culture on blood agar and further confirmed with biochemical tests.

Prevention and control: Biosecurity, rodent control, hygiene and healthy diet are enough to prevent the disease. This is mostly opportunistic infection; special care is to be taken during stress or other respiratory viral infections.

Posted Date: 9/18/2012 8:33:06 AM | Location : United States







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

Write discussion on Fowl cholera
Your posts are moderated
Related Questions
Addition of glycine to the physiological saline A complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline.  The neuron is heal

Management   In case of  small defects surgical treatment is not indicated because spontaneous closure may occur before one to two years of  age. Patient  is treated for conges

Cost due to Injury to Worker Medical cost - medicine, surgery, hospitalization, extended treatment. Working time lost due to injury or death. Time loss of cowork

Promoters The promoter region contains the DNA sequences that allow the formation of the transcription initiation complex that give the specificity of expression. Promoters are

CHEMICA L PROPERTIES Monosaccharides have two special chemical properties (i) Reducing Nature. All the monosaccharides are reducing sugars. It can reduce Cu2

Complications : IABP can compromise blood flow to the leg at the time of insertion, pumping or after removal of balloon. It may also cause perforation, bleeding, thrombosis, embol

The cranial nerves are composed of twelve pairs of nerves which emanate from the nervous tissue of brain. In order to reach their targets they should ultimately exit/enter the cr

Define in brief about the biomolecules Some of the biomolecules, also known as compounds of life, form part of the structure of cell, and some of these are sources of energy fo

which hormone is secret in salivary gland?

Explain the Liver organ? The liver is the largest internal organ in the human body. It lies just below the diaphragm in the upper right area of the abdominal cavity. It is an i