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What disease does a chicken have if it passes white watery droppings?

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Based on your description, it may be pullorum disease. Pullorum disease is an infectious disease caused by Salmonella pullorum. After newly hatched chicks are infected, they show listlessness, sensitivity to cold, drowsiness, refusal to eat, and difficulty breathing. The vent is often blocked by white pasty droppings, making defecation difficult. If not treated promptly, most die within 2 weeks. Chicks that recover become carrier birds. Adult chickens often have latent infection and generally show no clinical symptoms; in hens, only reduced egg laying or no egg laying is seen, the ova are shrunken, and the contents are greasy in appearance, with severe cases turning pale bluish or lead-black, and sometimes yolk peritonitis also occurs;

Based on your description, it may be pullorum disease. Pullorum disease is an infectious disease caused by Salmonella pullorum. After newly hatched chicks are infected, they show listlessness, sensitivity to cold, drowsiness, refusal to eat, and difficulty breathing. The vent is often blocked by white pasty droppings, making defecation difficult. If not treated promptly, most die within 2 weeks. Chicks that recover become carrier birds. Adult chickens often have latent infection and generally show no clinical symptoms; in hens, only reduced egg laying or no egg laying is seen, the ova are shrunken, and the contents are greasy in appearance, with severe cases turning pale bluish or lead-black, and sometimes yolk peritonitis also occurs; roosters have a lower fertilization rate, and the testes are often enlarged or atrophied. The measures for preventing and controlling pullorum disease are as follows:

1. To establish a healthy flock, pullorum disease whole blood slide agglutination testing can be used, positive chickens can be culled, and comprehensive sanitary measures can be combined to eliminate the source of infection.

2. Strengthen feeding management. Chickens of different ages should be raised separately, chicks should be raised on wire netting as much as possible, and newly purchased chicks should be isolated for observation and should not immediately be mixed into the large flock. The raising density should be moderate; they must not be too crowded. Indoor and outdoor sanitation should be maintained, chicken houses and equipment should be disinfected regularly, and the manure cleaned out should be transported far away from the chicken house for fermentation treatment. Attention should be paid to controlling light well, keeping the chicken house dry, and keeping the air fresh.

3. Feed with a complete formula feed to ensure the chickens' needs for various vitamins, minerals, and trace elements, so as to strengthen their constitution.

4. Isolate sick chickens from healthy chickens. Dead chickens from disease should be burned or deeply buried, litter contaminated by the droppings of sick chickens should be gathered and burned, all kinds of feeding tools should be disinfected with 2% caustic soda water, the topsoil should be removed from contaminated ground, and walls and fences are best flame-disinfected with an electric blowtorch.

5. Use drugs to prevent disease in healthy chickens. On chicken farms where pullorum disease occurs frequently, when chicks start eating, 0.02% furazolidone or furazolidone-oxazolone can be added to their feed for feeding, continuously for 5 to 6 days. Streptomycin or chloramphenicol at 0.1% can also be added to their feed or drinking water for prevention, with continuous medication for 9 to 10 days. When used for treatment, the dosage should be doubled. For severely ill chicks, kanamycin can be used for treatment, 1 milliliter per chicken per day, divided into two breast injections, for 2 to 3 consecutive days.

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