关键词: 梨, 梨, 早期落叶, 诱发因素, 防控

Abstract:

Abstract：Coccidiosis is recognized that has the greatest economic impact on poultry production. Long-term prevention and treatment of this disease depends on the drugs, but because of the frequent drug-resistant insect strains, drug residue, the high cost of research and development of new drugs, the existence of a long cycle and so on, using immunological methods to control coccidiosis received increasing attention, and is expected to become a major technological means. The applications of the humoral and cellular immunity and so on, about the immunogenicity of coccidia were reviewed, and the future research of coccidia in immunology were also discussed．