Control of endemic diseases in breeding pigs by means of slaughter check

Slaughter check에 의한 종돈의 방역관리

  • Accepted : 2005.11.22
  • Published : 2006.03.29

Abstract

This paper describes the slaughter check results of breeding pigs from the Korean Swine Testing Station for the control of endemic diseases. Gross lesions monitored in the present study included those conditions commonly associated with economically significant subclinical herd infections: enzootic pneumonia, pleuropneumonia, pleuritis, atrophic rhinitis, liver white spots, papular dermatitis and ileitis. A total of 128 slaughter pigs were investigated at 4 subsequent tests according to the slaughter check procedures established. The prevalence of enzootic pneumonia, pleuropneumonia and pleuritis in the initial test was 67.9%, 28.6% and 17.9%, respectively. However, these were decreased to 46.7%, 6.7% and 6.7%, respectively, in the last test after implementation of counter measures including clean-up protocols and medication programs (p > 0.05). The mean pneumonic score also significantly decreased from 6.8 in the initial test to 2.8 in the last test. The prevalence of atrophic rhinitis (${\geq}score\;2$) was 32.2% and mean atrophic rhinitis score of 1.1 were recorded. However, no significant improvement of conditions was achieved with the counter measures indicating that atrophic rhinitis was originated from the source herds and lesions developed early in the life. In the initial test, prevalence of liver white spots and papular dermatitis lesions was 21.4% and 25.0%, respectively. These conditions were cleaned by the implementation of parasite control measures with all-in all-out, strict clean-up protocols and proper medications adopted in the present study (liver white spots, p = 0.0124; papular dermatitis lesions, p = 0.0055). The prevalence of ileitis lesions in slaughter pigs from the initial test was 28.6%, it could be gradually reduced by the use of repeated treatments and control measures but the effect was not so significant (p > 0.05). In conclusion, slaughter check procedures were successfully established and applied for the control of endemic diseases in the Korean Swine Testing Station.

References

  1. 김규태, 정병열, 김봉환. 경북지역 가축에서 분리한 Samonella 속균의 혈청형 분포 및 약제 감수성. 한국수의공중보건학회지 2003, 27, 47-52
  2. 김봉환. PigMon Slaughter Check 기법을 이용한 양돈장의 위생관리에 관한 연구. 농림기술관리센터 연구보고서. 1998
  3. 소신희, 김봉환, 조길재. 도축돈의 폐렴병소로부터 분리한 Streptococcus suis의 생물화학적 특성 및 협막 혈청형. 대한수의학회지 1995, 35, 297-306
  4. 안병철, 조광현, 김봉환. 도축돈의 폐렴병소에서 분리한 Pasteurella multocida에 대한 연구. 대한수의학회지 1994, 34, 511-516
  5. 정병열, 조길재, 김봉환, 조광현. 돼지 폐렴병소에서 분리한 Actinobacillus pleuropneumoniae의 특성에 관한 연구. 대한수의학회지 1996, 36, 181-186
  6. Bernardo TM, Dohoo IR, Donald A, Ogilivie T, Cawthorn R. Ascariasis, respiratory diseases and production indices in selected Prince Edward Island swine herds. Can J Vet Res 1990, 54, 267-273
  7. Christensen G, Sorensen V, Mousing J. Diseases of the respiratory system. In: Straw BE, D'Allaire S, Mengeling WL, Taylor DJ (eds.). Diseases of Swine. 8th ed. pp. 913-940, Iowa State University Press, Ames, 1999
  8. Davies PR, Morrow WE, Jones FT, Deen J, Fedorka-Cray PJ, Harris IT. Prevalence of Salmonella in finishing swine raised in different production systems in North Carolina, USA. Epidemiol Infect 1997, 119, 237-244 https://doi.org/10.1017/S095026889700784X
  9. Hollanders W, Vercruysse J. Sarcoptic mite hypersensitivity: a cause of dermatitis in fattening pigs at slaughter. Vet Rec 1990, 126, 308-310
  10. Maguire HC, Codd AA, Mackay VE, Rowe B, Mitchell E. A large outbreak of human salmonellosis traced to a local pig farm. Epidemiol Infect 1993, 110, 239-246 https://doi.org/10.1017/S0950268800068151
  11. McOrist S, Gebhart CJ. Porcine proliferative enteropathies. In: Straw BE, D'Allaire S, Mengeling WL, Taylor DJ (eds.). Diseases of Swine. 8th ed. pp. 521-534, Iowa State University Press, Ames, 1999
  12. Mercy AR, Brennan CM. The western Australian pig health monitoring scheme. Acta Vet Scand Suppl 1988, 84, 212-214
  13. Mousing J. Chronic pleurisy in pigs: the relationship between weight, age and frequency in 3 conventional herds. Acta Vet Scand Suppl 1988, 84, 253-255
  14. Murray CJ. Salmonella serovars and phage types in humans and animals in Australia 1987-1992. Aust Vet J 1994, 71, 78-81 https://doi.org/10.1111/j.1751-0813.1994.tb03332.x
  15. Pointon AM, Byrt D, Heap P. Effect of enzootic pneumonia of pigs on growth performance. Aust Vet J 1985, 62, 13-18 https://doi.org/10.1111/j.1751-0813.1985.tb06032.x
  16. Pointon AM, Davies PR, Bahnson PB. Disease surveillance at slaughter. In: Straw BE, D'Allaire S, Mengeling WL, Taylor DJ (eds.). Diseases of Swine. 8th ed. pp. 1111-1132, Iowa State University Press, Ames, 1999
  17. Ross RF. Mycoplasmal disease. In: Straw BE, D'Allaire S, Mengeling WL, Taylor DJ (eds.). Diseases of Swine. 8th ed. pp. 495-510, Iowa State University Press, Ames, 1999
  18. Smith DG, Lawson GH. Lawsonia intracellularis: getting inside the pathogenesis of proliferative enteropathy. Vet Microbiol 2001, 82, 331-345 https://doi.org/10.1016/S0378-1135(01)00397-2
  19. Straw BE, Backstrom L, Leman AD. Examination of swine at slaughter. Part II. Findings at slaughter and their significance. Comp Cont Educ Pract Vet 1986, 8, S106-112
  20. Straw BE, Dewey CE, Marrero CE. Findings from slaughterchecks of swine during a four year period. Comp Cont Educ Pract Vet 1994, 16, 245-251