Serology Investigatio and PCR Diagnosis of Avian M yelocytomatosis
Abstract: We investigated the infection of Avian leukosis virus subgroup J myelocytomatosis usingEI ISA method in Inner Mongolia Region.The result indicated that the meat—type flocks of three dif—ferent farms infection rate'.of ALV—J were 28.12%(9/32)、9.38%(3/32)and 8.33%(10/12),respec—tively,and all laying chickens infection rate were 0%(0/35,0/10).We chose 6 chickens of ALV—J an—tibody positive and 13 chickens of ALV—J antibody negative to do PCR test.The result indicated that6 chickens of ALV—J antibody positive were all PCR positive,and 4 chickens were PCR positive among1 3 chickens of AI V—J antibody negative.The result indicated that there were ALV—J virus not only inAI V—J antibody positive chickens but also in some AI V—J antibody negative chickens.