Preventing 5 diseases for poultry during the rainy season

(Baonghean.vn) - The rainy and stormy season can cause localized flooding or widespread flooding, creating favorable conditions for disease outbreaks in poultry flocks.Farmers need to pay attention to some common diseases that occur in livestock below.

1. Avian influenza

Causen: Caused by Influenza A virus, this is an acute, very dangerous infectious disease that spreads rapidly and strongly, occurring in all types of poultry; chickens, ducks, geese, birds of all ages. The disease is transmitted to humans.

Chicken with bird flu, bleeding eyelids, face, purple head.

Symptom:Respiratory symptoms often include coughing, wheezing, beak scaling, runny nose and eyes; swollen head, thickened comb due to edema, cyanosis, many hemorrhagic spots, and bleeding on the legs.

Bleeding eyelids, face, purple head; symptoms of fatigue, lethargy, severe diarrhea, loose white or yellow, green stools.

Disease prevention: Only buy poultry from good breeding facilities, ensuring they are disease-free.

Do not keep newly purchased poultry with existing poultry; they need to be isolated and raised separately for 21 days.

Clean and disinfect barns regularly; keep food and water clean. Limit people entering and exiting the livestock area.

Take preventive measures, do not raise many types of poultry or poultry of different ages together in the same area; regularly eliminate sick and weak poultry from the flock.

Vaccinate according to veterinary instructions.

2. Pasteurellosis

Reason:Caused by the bacteria Pasteurella multocida, which has many strains. The disease occurs in poultry, usually in poultry over 1 month old.

Sick poultry die up to 90 - 100%.

Clinical symptoms: Poultry dies suddenly, purple comb, slow movement, paralyzed legs or paralyzed wings. Loose white or greenish-white feces or fresh blood. Difficulty breathing, runny nose, saliva. Bacteria enter the blood causing sepsis, causing the poultry to die quickly.

Eye swelling, conjunctivitis. Poultry egg laying rate decreases, mortality rate increases; sick poultry die up to 90 - 100%.

Disease prevention:Enhance care and feeding, improve the livestock environment, hygiene, and disinfect inside and outside the barn.

Poultry over 1 month old use alum glue vaccine: 0.5 ml/bird. After 4 - 6 months, repeat the second injection.

Clean the barn, spray disinfectant inside and outside the barn periodically once every 1-2 weeks.

3. Chronic respiratory disease

Reason:The basic agent causing chronic respiratory disease is Mycoplasma gallsepticum. The disease occurs in poultry of all ages.

The disease is transmitted through eggs from parent flocks to offspring; infected poultry can be due to contact with sick poultry or pathogens from the environment; due to polluted farming environment, poor ventilation...

Symptom:Chickens often have poor appetite, reduced weight gain, and high feed consumption. Adult chickens generally show signs of watery eyes and nose, especially difficulty breathing. Hens' egg-laying rate decreases by 20-30%.

The disease usually does not kill chickens, but in chronic form it reduces weight gain, increases feed consumption in broilers and reduces egg production in laying hens.

Disease prevention:Buy chicks from disease-free places to avoid chicks from catching many diseases from eggs. Isolate sick and healthy chicks.

Use vaccines to prevent disease; Periodically disinfect barns and surrounding environment.

4. Coccidiosis

Reason:Coccidiosis is caused by a single-celled parasite. The disease usually occurs in chickens, the most common stage is 3-6 weeks old.

The disease is mainly transmitted through the waste of sick chickens. Incubation period is 4 - 6 days.

Symptoms: Chickens lose weight quickly, have pale combs, and have loose, white, bloody droppings. Upon autopsy, the cecum or duodenum is thickened and bleeding, and sometimes the intestines are filled with blood.

Each type of poultry has its own species of coccidia, which are not transmitted to each other.

Disease prevention:Chickens should be raised on the floor so they do not eat droppings that contain pathogens.

Keep the floor dry, change bedding regularly to prevent coccidia from developing and spreading.

Use coccidiosis vaccine (Coccivac) according to the manufacturer's instructions.

5. Duck plague

Reason:Duck cholera, also known as duck viral enteritis, is a highly contagious infectious disease caused by Herpesvirus. This virus causes cholera in both geese and ducks...

To prevent the disease, vaccination is required; vaccinate geese and ducklings at 2 weeks and again at 2 months of age.

Symptom:The incubation period usually lasts from 2 to 7 days. Sometimes the disease breaks out due to a highly toxic strain; ducks and geese die while swimming without showing clinical symptoms.

At first, geese and ducks are less flexible, stop eating, lie in one place, their wings hang down to the ground, have difficulty walking, and are lazy to swim. In geese and ducklings, the first symptoms that can be seen are keratitis, wet eyes and wetting the feathers around the eyes; discharge from the nose, beak stuck to the ground, watery and dirty mucus.

Sick animals have ruffled fur, diarrhea, yellow or pale green stools, sometimes mixed with blood. Animals stop eating, show neurological symptoms, and dig their beaks into the ground. The birth rate drops significantly, sometimes only 15-16%.

After 1-3 days of illness, some ducks and geese show signs of recovery, but after only a few days the symptoms reappear more severely, the animals become exhausted and die.

Disease preventionTo prevent the disease, healthy ducklings and geese must be vaccinated with duck cholera vaccine. Vaccinate ducklings and geese at 2 weeks and again at 2 months of age. For breeding ducks and geese, the vaccine should be repeated every 6 months.

Take good care and provide enough clean drinking water. Clean the barn, spray disinfectant inside and outside the barn, and bathing tank periodically once every 1-2 weeks.

Ngoc Anh

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