Pay attention to infectious laryngotracheitis in chickens in early spring, and master the treatment and medication methods

Infectious laryngotracheitis in chickens is an acute, contagious upper respiratory tract infectious disease caused by the infectious laryngotracheitis virus. So here we remind the vast number of farmers:Pay attention to infectious laryngotracheitis in chickens in early spring, and you need to know how to treat it and what medicine to use!

What medicine should be used for infectious laryngotracheitis in chickens?

Kanggan polypeptide can be used; each set can be injected into 1000 adult birds or 2000 young birds, and generally one injection is enough. For drinking water, use one set per 500 adult birds or 1000 young birds, to be finished within 3—4 hours; generally one drinking-water dose is enough, while for severely affected cases give it in drinking water for two days, once a day.

Precautions:

1. Kanggan polypeptide should avoid being mixed with strong acid or strong alkali drugs;

2. Kanggan polypeptide does not need to be increased in dosage unless there are special circumstances;

3. It takes effect 50 minutes after administration, and detoxification (diarrhea) will occur, which will disappear the next day.

How to treat it? What prevention and control measures are there?

Spring is a season with frequent diseases. Infectious laryngotracheitis in chickens is an acute respiratory infectious disease caused by a herpesvirus. This disease spreads quickly and has a high mortality rate. It can occur in all four seasons, but is more common in winter and spring.

In the early stage, diseased chickens have nasal discharge that is semi-transparent, tearing, and conjunctivitis. Afterward, characteristic respiratory symptoms appear, namely moist rales during breathing, coughing, and wheezing sounds. When inhaling, the head and neck are stretched forward and upward, the mouth is opened, inhalation is difficult, and there are wheezing sounds. In severe cases, there is severe difficulty breathing and coughing, and bloody mucus may be coughed up. If secretions cannot be coughed out and block the trachea, the bird may suffocate and die.

When the disease occurs, symptomatic treatment can be given, and antibacterial drugs can be used to prevent secondary infection. Chicken houses and feeding utensils should be disinfected frequently. In areas where this disease is prevalent, chickens can be immunized with an attenuated vaccine by electro-eye vaccination. The first immunization is at about 4 weeks of age, and the second immunization is carried out after 6 weeks. Diseased chickens can be injected intramuscularly with 50,000-100,000 units of streptomycin once, twice a day, for 3-5 consecutive days. Virus can be mixed into the feed and fed orally.

Measures:

Treatment

For prevention of infectious laryngotracheitis in chickens, use 1 dose of attenuated vaccine as follows: eye drop and nasal drop at 30 days of age. Note: because vaccination can make chickens carry the virus, this prescription is only used in areas where the disease is prevalent.

When the disease occurs, Longda tripeptide can be used, and each set can be injected into 1000 adult birds. Antibacterial drugs should also be used to prevent secondary infection. Feeding and management utensils and chicken houses must be disinfected. Recovered chickens must not be mixed with susceptible chickens.

Disinfection

Feeding and management utensils and chicken houses should be disinfected. Chickens of unknown origin should be isolated and observed; several susceptible chickens can be placed together with them for observation for 2 weeks. If no disease occurs, it proves that they do not carry the virus, and only then can they be mixed into the flock.

Culling

Recovered chickens must not be mixed with susceptible chickens. Chickens that have survived the disease carry and shed the virus for a certain period, so contact between susceptible chickens and recovered chickens must be strictly controlled; it is best to cull recovered chickens.

Immunity

After natural infection with infectious laryngotracheitis virus, chickens can develop strong immunity, which can last at least more than 1 year, or even lifelong immunity. Susceptible chickens can obtain protection for six months to 1 year after vaccination. Maternal antibodies can be passed to offspring through eggs, but their protective effect is very poor and they do not interfere with chicken immunization, because the vaccine virus is a cell-associated virus. The author believes: in areas where this disease is not prevalent, it is best not to use attenuated vaccine immunization, and even more so, natural virulent virus inoculation must not be used; it can not only make the source of this disease persist for a long time, but may also spread other epidemic diseases.

Vaccination

In areas where this disease is prevalent, vaccination with infectious laryngotracheitis attenuated vaccine can be considered, by nasal drop, eye drop (drinking water is also sometimes used) immunization. Follow the vaccine instructions.