鸡瘟是一种传染病，主要影响 chickens（家禽）。造成鸡瘟的原因包括：
1. **细菌性鸡瘟**：由沙门氏菌（Salmonella）引起的一种疾病。
2. **病毒性鸡瘟**：由甲型和乙型传染性单核细胞增多症病毒（Infectious Bronchitis Virus, IBV）引起的一种疾病。
解决方案：
1. **预防措施**： Implement proper hygiene practices when handling chickens and their droppings. Regularly clean and disinfect the coop and run to prevent the spread of disease.
2. **疫苗接种**： Administer vaccines to chickens to protect them against diseases such as IBV and other pathogens.
3. **营养管理**： Ensure that chickens have access to a balanced diet that meets their nutritional needs, which can help boost their immune system and reduce the risk of disease.
4. **健康检查**： Regularly inspect your flock for signs of illness or stress, and take prompt action if you notice any abnormalities.
5. **生物安全**： Implement strict biosecurity measures to prevent the introduction of new pathogens into your flock.
这些措施可以帮助预防和控制鸡瘟，并确保您的 chickens 健康强壮。
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