돼지유행성설사병 지속감염 양돈장의 임상검사 및 방제대책 (Clinical Examination and Control Measures in a Commercial Pig Farm Persistently Infected with Porcine Epidemic Diarrhea(PED) Virus)

서지정보

· 발행기관 : 한국임상수의학회
· 수록지 정보 : 한국임상수의학회지 / 26권 / 5호 / 463 ~ 466페이지
· 저자명 : 박최규, 이창희

초록

A swine farm located in the Kyungpook province (designated as farm D that have been suffering from
PED for several years was selected to study the etiology and the outbreak pattern of PED by clinical and laboratory
examinations. Clinical examination indicated that sows exhibited signs of mastitis resulting in an inadequate transfer
of lactogenic immunity against PEDV to newborn piglets. Furthermore, serological tests revealed that all sow groups
and their piglets had low levels of anti-PEDV antibody. These data suggest that improper vaccination program has
been indeed performed in this farm. Remarkably, despite no symptoms of PED in weaners, the presence of PEDV
was identified by RT-PCR from fecal samples of weaning piglets, indicating persistent PEDV circulation in the herd.
Based on these results, the following basic control schemes were executed for the control of PEDV circulation in
the farm; a) A quick removal of affected pigs and disinfection of affected sheds. b) restructuring of vaccination program
and employment of consultant. c) prompt treatment of mastitis and removal of poor lactogenic sows, and d) enhancement
of biosecurity of farrowing house by acquisition of additional space. We evaluated risk factors and implementation
of control measures in two months and were unable to found any case related to PEDV infection. Taken together,
our data indicate that the method described above is effective for the control of PED outbreak in farm persistently
suffering from PEDV infection.

영어초록

A swine farm located in the Kyungpook province (designated as farm D that have been suffering from
PED for several years was selected to study the etiology and the outbreak pattern of PED by clinical and laboratory
examinations. Clinical examination indicated that sows exhibited signs of mastitis resulting in an inadequate transfer
of lactogenic immunity against PEDV to newborn piglets. Furthermore, serological tests revealed that all sow groups
and their piglets had low levels of anti-PEDV antibody. These data suggest that improper vaccination program has
been indeed performed in this farm. Remarkably, despite no symptoms of PED in weaners, the presence of PEDV
was identified by RT-PCR from fecal samples of weaning piglets, indicating persistent PEDV circulation in the herd.
Based on these results, the following basic control schemes were executed for the control of PEDV circulation in
the farm; a) A quick removal of affected pigs and disinfection of affected sheds. b) restructuring of vaccination program
and employment of consultant. c) prompt treatment of mastitis and removal of poor lactogenic sows, and d) enhancement
of biosecurity of farrowing house by acquisition of additional space. We evaluated risk factors and implementation
of control measures in two months and were unable to found any case related to PEDV infection. Taken together,
our data indicate that the method described above is effective for the control of PED outbreak in farm persistently
suffering from PEDV infection.

참고자료

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