3.2 │ The infection status of Avian leukosis virus in semen and plasma of a rooster
Virus isolation was performed on the semen and plasmas of 46 roosters simultaneously. In total, 14 roosters were tested to be positive for ALV in plasma or semen (30.43%). Among those, 12 were positive in plasma (26.09%) and 8 were positive in semen (17.39%). According to the results of virus isolation from semen and plasma of the same rooster, there are 4 types of infection status of Avian leukosis virus in the 46 roosters (Table 2). 6 chicken showed viraemia, with semen positive (V+S+, 13.04%); 6 chickens showed viraemia, with semen negative (V+S-, 13.04%) ); 2 chickens showed no viraemia, with semen positive (V-S+, 4.35%), while the remaining 32 were double-negative (V-S-, 69.56%).