infectious laryngotracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, mortality, pdf, manual

Respiratory diseases in chickens can be caused by many agents. One of the most common respiratory diseases in chickens is infectious laryngotracheitis, ilt. The disease is caused by viruses, herpes virus, ILTvirus. Very contagious. Clinical signs: gasping,  rattling, coughing and extension of the neck during inspiration are seen 5–12 days after natural exposure, reduced productivity is a varying factor in laying flocks. Affected birds are anorectic and inactive.

The most characteristic symptoms of ilt are a bloody cough, the chicken releases a tracheal exudate mixed with blood. A cough is a dominant symptom in infectious laryngotracheitis cases compared with other respiratory diseases, and lacrimation in the eye. See some pictures below:

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, mortality, morbidity farming pdf
Coughing, choking chickens, conjunctivitis with lacrimation, the most common symptom in ilt.

Chickens that have been infected with the virus will generally cough up phlegm, some of them sound like choking, in severe conditions, coughing cock by issuing tracheal exudate mixed with blood. So the battery cage found many bloody exudates.

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, pdf, photos
tracheal exudate with blood

 

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, pictures, manual
tracheal exudate with blood on battery cage

The tracheal exudate looks a bit thick, this makes the coughing chick like choked. This exudate accumulates in the cavity of the trachea lining the respiratory tract so that the chickens are coughing and remove exudate mixed with blood. When coughing, sometimes the exudate directly attached to the battery, sometimes sticking around the beak, and the chicken will wag the head so that the exudate is released and attached to the feed container, drinking container and floor.

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms

Tracheal exudate attached to the head.

 

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs,chicken farming, images
Tracheal exudate attached to feed container, infectious laryngotracheitis, ilt

Severe laryngitis, severe haemorrages, severe pathological lesions. This condition causes high morbidity in chickens. The mortality rate is not too high, but if late overcome the death can increase due to blockage of the respiratory tract. This is the cause of death in infectious laryngotracheitis.

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, pdf, laryngitis
trachea, laryngitis

 

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, photos color atlas
trachea, ilt in chicken

In some lesions, there are similarities with fowl pox, wet pox or diphtheritic. The pox virus can cause similar symptoms in the trachea, pharynx. However, in ILT there is no lesion or scab on the oral cavity as found in pox.

See Video on Field Vet Channel on Youtube

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, pdf , pox
trachea, ILT

See Also: Pictures of Gumboro Disease

infectious laryngo tracheitis, ilt, chicken, poultry diseases, virus, symptoms, signs, farming, vaccination
lacrimation, ILT

In some respiratory cases, conjunctivitis, lacrimation in the eye is common. In addition to ILT, also on avian pox. But in ILT, respiratory symptoms are more dominant.

see also: PICTURES of Avian Influenza

Infectious Laryngotracheitis spreads rather slowly than other viral respiratory diseases. In this case, symptoms of the disease observed in chickens located at the back of the chicken house. For two weeks, symptoms of the disease are still observed around the back. Until entering the third week, began to observe respiratory symptoms in chickens located in the middle and front of the house.

infectious laryngotracheitis, ilt
The spread of disease

In this case the chickens were about 17 weeks old, had done ILT vaccination at the age of 10 weeks. Maybe this is a vaccination failure that needs to be corrected. At this flock the mortality rate is quite high, until the 5th week, the mortality rate reaches 15%. This case handling is not maximum. We will provide techniques for handling various viral cases in other articles.

See other PICTURES of Poultry Diseases

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