2003년 국내 원종계 및 종계의 추백리-가금티푸스 감염실태

초록

Serum samples of 30 chickens per flock from 6 grand parent stock (GPS) farms and 70 parentstock (PS) farms were collected for seroprevalent study of pulorum disease-fowl typhoid (PD-FT) infectionby serum plate agglutination test (SPA). The incidence of PD-FT infection in GPS flocks and PS flockswere 0% and 15.7%, respectively. Especially PS flocks infected with PD-FT showed age dependent paternsage were positive. The incidence of GPS flocks and PS flocks using Salmonella (S.) gallinarum 9R (SG9R)live vaccine were 33.3% and 58.6%, respectively. The sero-positive rate of 11 flocks were 6.7-83.3% bySPA and 2.9-55.6% by enzyme linked imunosorbent assay (ELISA), and ELISA showed more lowerantibody levels than SPA. Furthermore, specific antibodies produced by SG9R vaccination were detectableby SPA using SG9R antigen without cross-reaction with the PD-FT infection.

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