Newcastle disease or, as it is also called, psevdochum - one of the most common diseases among birds. Every year thousands of poultry die from it. But few people know that this disease is dangerous for humans.
Signs and symptoms of Newcastle disease
Incubation stage of the virus proceeds within 7-12 days, but the disease itself is immediately apparent. Unvaccinated birds and birds with weak immune systems die 2-3 hours after infection, while not showing any symptoms.
Also pay attention to other the symptoms:
- Nervous system problems. In a bird, coordination, paralysis of the limbs or neck is impaired;
- Problems with the digestive tract. Birds have reduced appetite, diarrhea (diarrhea);
- Damage to the mucous membranes of the nose and mouth. Mucus-like discharge, coughing, coughing;
- Vision problems. Conjunctivitis and blurred eyes;
- Increased body temperature. Mobility, depression.
Young chickens die within three days after infection during the acute stage of the disease.Poultry farm
Chronic stage is rare and in layers with a strong immune system. For such cases is typical:
- convulsions limbs and cervical;
- loss of appetite and depletion of the body;
- excitability nervous system;
- head reel.
In this case, the chances of salvation are great. With proper and timely treatment mortality risk no more than 15-30%.
All poultry such as chickens, ducks, geese, turkeys, broilers, etc. are susceptible to this disease. Young birds are most at risk of infection.
Sources of infection
Such sources are sick or in the incubation period bird. Also it is necessary to be afraid of rodents and wild birds. Infection is transmitted through non-disinfected food (eggs, meat), raw materials (bedding, feather, down, feed). Infection occurs through clothing and shoes that have been in contact with an infected bird.Chickens eat
In places where birds gather, the Newcastle virus is transmitted through the ventilation system.
Although this virus has been known for a long time, the generally applicable therapy has not yet been derived. Basically, A large number of infected birds are simply destroyed..
Treatment in adult birds and chickens
As already mentioned, generally accepted treatment principles do not exist, but prevention measures will help reduce the risk of infection.
There are cases of pseudo-infection in chickens that have not been in contact with infected adults. To avoid such cases chickens need to be vaccinated. Birds acquire immunity 96 hours after taking the vaccine. And also in the event that the bird gets sick and remains alive, which happens quite rarely.
To do this, in rooms with feathered put special lamps. When eating meat or eggs it is worth subjecting products to heat treatment.
This poultry immunity is much higher than that of chickens. But geese too often fall prey to newcastle virus. And they should also be vaccinated at the age of chicks. Geese are good carriers of the infection and transmit the virus without much harm to themselves. They much better treatable and the risk of mortality is much lower. But the risk of human infection is higher, since not all poultry carriers show symptoms of the disease, and a person can pick up the virus for some time without knowing from what.
Ducks are also often carriers of this virus. It is necessary to ensure that the birds are not in contact with their wild brethren and monitor the cleanliness of the room. Rodents are also carriers of the virus.. So at the first appearance of rodents it is worth carrying out deratization.Vaccination of birds
In these birds, the disease is acute and lasts no more than three or four days. In rare cases, it can develop up to ten days. It is worth remembering that there is no cure for this virus and the only way to prevent the disease is to vaccinate a bird at a certain age, to carry out prophylaxis in the form of ultraviolet radiation.
Precautionary measures do not differ from the above. Timely vaccination and hygiene will prevent disease and death of birds.
Prevention. What vaccines to use?
Of the chemical means it is necessary to provide drugs: phenol, beta-propylactone, ethyleneimine. As well as formaldehyde and alcohol. These chemicals have a detrimental effect on the Newcastle virus.Newcastle Disease Vaccine
Newcastle virus in humans
It is worth remembering that a person is able to pick up this virus.
Infection can occur through direct contact with an infected bird, eating foods that are infected with a virus, and through contaminated dust.Man on the chicken farm
The incubation period lasts from three to seven days. Newcastle victims are people of working age.whose activities are somehow related to the poultry industry.
Signs and symptoms
Although this virus does not pose a particular danger to humans, its symptoms are rather unpleasant.
First of all it mild conjunctivitis (corneal opacity)
- swelling and redness of the eyelids, mucous or purulent discharge.
Also possible flu-like symptoms:
- temperature rise;
- lack of appetite;
- poor general condition;
- nasal congestion and mucous discharge;
- diarrhea (sometimes with blood).
How to protect yourself?
First, it is necessary to carefully comply with sanitary and hygienic standards.. Wash and disinfect hands as often as possible.
Second, process foods that you eat. Do not eat raw or under cooked meat and eggs. All products must be thermally processed.
Third, watch your health. As soon as you have symptoms, consult a doctor immediately.