Korean Journal of Veterinary Research 2010;50(3):205-211.
Prevelance of neutralizing antibody related with viral respiratory disease in cattle
Choong-Keun Youn1, Yeon-Soo Lim2, Young S. Lyoo3
1Nonghyup Animal Feed
2Hanwoo Improvement Center, National Agricultureral Cooperative Federation
3College of Veterinary Medicine, Konkuk University
송아지 바이러스성 호흡기 질병 중화항체 조사
윤충근1, 임연수2, 류영수3
3건국대학교 수의과대학
Fifty young calves, about five to six months old purchased from nation-wide were investigated with the prevelance of neutralizing antibody (Ab) of infectious bovine rhinotracheitis virus (IBRV), parainfluenza 3 virus ($PI_{3}V$), bovine viral diarrhea virus (BVDV) and bovine respiratory syncytial virus (BRSV). The positive detection ratio of neutralizing Ab against IBRV was only 3% and two of positive samples showed low antibody titer (below 2). Ab against BRSV showed 48% of positive ratio and among 24 positive samples, antibody titer of 23 samples were below 3. But in the case of BVDV, 68% of samples were positive and 23 samples appeared to possess high antibody titer, above 4 and the antibody titer of five samples were above 8. The highest positive result came from $PI_{3}V$. The positive ratio in the samples investigated in this study was 72%, but the antibody titer of positive samples were generally below 3 (77.8% in positive samples).
Key Words: bovine respiratory syncytial virus (BRSV), bovine viral diarrhea virus (BVDV), infectious bovine rhinotracheitis virus (IBRV), neutralizing antibody (NA), parainfluenza3 virus ($PI_{3}V$), polymerase chain reaction (PCR)

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