Prevelance of neutralizing antibody related with viral respiratory disease in cattle
2010
Youn, C.K., Nonghyup Animal Feed, Seoul, Republic of Korea | Lim, Y.S., Hanwoo Improvement Center, National Agricultural Cooperative Federation, Seosan, Republic of Korea | Lyoo, Y.S., Konkuk University, Seoul, Republic of Korea
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 (PI₃V), 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 PI₃V. 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).
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