Abstract:

The aim of this study was to investigate the infection situations of avian leukosis virus (ALV) and avian reticuloendotheliosis virus (REV) in 6 unique species of "non-chicken" birds and local chicken breeds including Liuhua pheasant, Dama duck, Xiaoma duck, You-jiang goose, Ling-yun Black chicken, Snow flake Chicken. Totally 593 samples of both sera anal swab from six kinds of poultry were collected and detected with ALV antigen test kit, avian leukosis virus antibody test kits-subgroup A/B and J, and REV antibody test kit respectively. The results showed that: (1) There were significant difference of ALV antigen detection rate between different breeds, some positive case were found in local chicken breeds and pheasant, and the positive rate was 15.4%-43.2% among them, while no positive were found in ducks and gooses; (2) Same as the situation of ALV antigen detection rate, ALV antibody detection rate of chickens was higher than ducks and gooses, the positive rate was 7.7%-71.6% among chickens, while only few positive cases of You-jiang goose, Dama duck, Xiaoma duck, were also founded. (3) The situation of co-infected with ALV-J and ALV-A/B, coexist with ALV antigen and antibody, co-infected with ALV and REV cases were found, especially ALV antigen, ALV-A/B antibody, REV antibody all positive cases were found in Snowflake chicken breeds (9.47%). This is the first report of the ALV and REV infection in various species of "non-chicken" poultry and local chicken breeds. The results showed that some pure local avian breeds were infected by ALV and REV. It can be concluded that the results of the study will be helpful for understanding the emergence and importance of avian leukosis prevention and control in poultry and can be used as an important reference for the further eradication of avian leukosis.