This disease is a fungal infectious disease caused by Candida albicans in poultry, especially young birds. Its main characteristics are white pseudomembrane and ulcer changes in the mucosa of the upper gastrointestinal tract, which are more common in chickens and pigeons.
Epidemic characteristics: This bacterium is widely found in nature, and is parasitic in the mouth, upper respiratory tract and intestines of healthy poultry. It is mainly seen in young chickens, geese, pigeons, etc., and ducks are rarely infected. The susceptibility and mortality of young birds are higher than those of adult birds, and the important factors that induce the disease are mainly long-term use of antimicrobials and vitamin deficiency.
Clinical symptoms: loss of appetite in sick birds, inability to eat in the sac, stunted growth and development, and decreased egg production rate of laying hens.
Necropsy lesions: emaciation of sick and dead birds, nasal discharge, gray-white mucus in the oral cavity and pharynx, scattered or dense milky white colony plaques in the mucosa of the bursa and close adhesion with the mucosa, and red ulcer surface is exposed after peeling.
Prevention and control measures: strengthen feeding management, do a good job of cleaning and hygiene, ensure that the ventilation environment of the chicken house is dry, control the feeding density, avoid crowding, and should avoid long-term use of antimicrobial drugs to prevent the normal flora of the digestive tract from being destroyed and causing double infection. Drug control can refer to avian aspergillosis.