Infection rate and clinical pathology of disease caused by Trichomonas gallinae in chickens in Khanh Hoa province

Abstract

The study was conducted to determine the infection rate of chickens with T. gallinae in Khanh Hoa province using Ziehl Neelsen staining method. A total of 1,095 chicken samples were collected in Dien Khanh, Khanh Vinh, Cam Ranh and Ninh Hoa districts for testing T. gallinae. The tested results showed that there were 248/1,095 positive samples, accounting for 22.6%. Chickens were infected with the protozoan (T. gallinae), having the typical clinical symptoms, such as: anorexia, ruffled feathers, dysphagia, dyspnoea and diarrhea. The gross lesions of diseased chickens were characterized by white to yellow caseous masses, together with inflammatory ulcerated oral cavities and digestive tracts; raised caseous accumulations in the throat. This studied results indicate that further research/surveys need to be carried out in other provinces and on many poultry subjects in order to assess properly the epidemiology of this disease.