How to prevent and treat pullorum disease? Prevention and treatment methods every chicken farmer must read

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Pullorum disease is an extremely common infectious disease caused by Salmonella pullorum. Its excreta is an important transmission medium, and it can also be transmitted vertically through eggs.  
Main symptoms and lesions of pullorum disease
1.: Chicks: Among the hatched chicks, there are relatively many weak chicks, with inflammation of the navel. They begin to develop the disease and die at 2-3 days of age, with deaths peaking at 7—10 days of age, and deaths gradually decreasing after 2 weeks. They gasp, stretch the neck, and open the beak to breathe. The mortality rate of affected flocks is 10%—25%. Surviving chickens grow slowly, are emaciated, and have a distended abdomen. Affected chicks sometimes show arthritis, swollen joints, lameness, or remain motionless on the ground. They appear listless, afraid of cold, and shivering. The feathers are ruffled, and appetite is completely lost. They pass white viscous droppings, and the feathers around the vent are stained with lime-like droppings, which may even block the vent.
2. Growing chickens: This mainly occurs in chickens aged 40—80 days. Affected chickens are mostly those not completely cured as chicks and have turned chronic, or result from infection during the brooding period. In the flock, chickens with listlessness and poor appetite and chickens with diarrhea continuously appear. Affected chickens often die suddenly, and deaths continue continuously, lasting 20-30 days.
3. Adult chickens: Adult chickens do not show the characteristics of acute infection and are often asymptomatic carriers. In flocks heavily contaminated by the pathogen, the egg production rate, fertilization rate, and hatchability rate are all at low levels. The mortality and culling rate of chickens is significantly higher than that of normal flocks.
Edit this section: Lesion characteristics
1. Prevention of pullorum disease
(1) Quarantine and purification of the flock: Through serological testing, detect and cull carrier breeding chickens. The first test is carried out at 60—70 days of age, the second test can be carried out at 16 weeks of age, and afterward testing is carried out once every 1 month. Positive chickens are culled promptly until the positive rate of the whole flock does not exceed 0.5%.
(2) Strict disinfection: ① Disinfection of hatching eggs. Collect and select hatching eggs promptly, and fumigate and disinfect them 3 times with 28 ml/m3 formalin for 20 minutes at egg collection, after placement in the incubator, and at transfer at 18—19 days of embryonic age. When about 50% have hatched, fumigate and disinfect again in the hatcher with 10 ml/m3 formalin. ② Establish a strict disinfection system in the hatchery. ③ In brooding houses, growing houses, and layer houses, thoroughly clean and disinfect the floor, utensils, feed troughs, cages, drinkers, etc., and regularly carry out disinfection with chickens present. ④ Strengthen the feeding and management of chicks, and pay attention to drug prevention.
  At present, the occurrence of pullorum disease is becoming increasingly serious, with a mortality rate of 10% - 60%, and the harm is especially severe during the brooding stage, often causing huge economic losses to the chicken industry. In the prevention and treatment of pullorum disease, the traditional method is to use antibiotic drugs. However, due to the development of drug resistance, accumulation of antibiotics in the body, etc., harm has already been caused to chicken health, and excessive antibiotics excreted into the environment cause environmental pollution, which in turn can also affect human health. Therefore, both domestically and internationally, there has been a start
Henan Dekang Spread Animal Pharmaceutical Co., Ltd.  , in order to solve the above problems.
How to treat pullorum disease:
Henan Dekang (Spread) Animal Pharmaceutical Co., Ltd.
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