• Journal of Veterinary Clinics
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• v.18 no.2
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• pp.185-188
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• 2001

A weakened wild feral pig (a boar of about 15 kg) with snout distortion and characteristic external lesion of infectious atrophic rhinitis was captured at farm land near low mountains in Chinju, Kyeongnam province. This pig was necropsied and then the snout parts and the parenchymal organs were removed. The snout and nose were transversely sectioned at thickness of 1.5 cm interval. Grossly, the right side of the snout was shorted than that of left by reduction of right nasal turbinate length, but the nasal opening exudate was not observed. At necropsy, degeneration, adhesion, occlusion, and asymmetry of left and right sides on the meatus and turbinate were observed and findings of mild pneumonia were observed. Microscopically, the leukocyte infiltration, hyperemia and hyperplasia on the mucosa of the turbinates and septum were observed. The atrophied periosteum and osseous tissue were also observed. But Bordetella bronchiseptica was not identified in culture from nasal swabs. We expect the possibility that the snout distortion of this pig was due to infectious atrophic rhinitis according to these findings.

• Korean Journal of Veterinary Service
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• v.20 no.1
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• pp.27-35
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• 1997

An abattoir survey of pneumonia and other lesions in slaughtered pigs from 5 selected herds located In the Western Kyongbuk was carried out during the period from March to December 1995. Pneumonic lungs was attempted bacteriological finding and antibiotic susceptibilities. From 583 slaughtered pigs, 445(76.3%) case was pneumonic lungs, seasonal patterns were Winter, Spring, Autumn, Summer in the order named. Among them, 127(21.8%) case was mycopla-sma pneumonia and 65(11.2%) case was pleuropneumonia. In snout lesion grade from 337 slaughtered pigs, above grade II score was 107(31.8%). In the white spot of liver, grade I was 544(93.3%), grade II32(5.5%) and grade III 7(1.2%). In the gastric ulcer, normal was 350(60.0%), grade I168(28.8%), grade II59(10.1%) and grade III 6(1.1%). Among the pigs(n=271) with pneumonic lesions above 20%, 162 strains werr isolated from 87(32.1%) pigs. The bacteria isolated from pneumonic lesions was Pasteurella sp 61(37.7%), Streptococcus sp 31(19.1%), Actinobacillus sp 3(1.9%), Coliform bacteria 19(11.7%) and the other bacteria 48(29.6%) These isolates were highly susceptible to the antibiotics including ENR 142(87.7%), Cft 138(85.2%) and Cf 126(77.8%).

• Korean Journal of Veterinary Research
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• v.29 no.4
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• pp.479-485
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• 1989

The present study was conducted to investigate the incidence of Pasteurella multocida infection in Youngnam swine herds during the period from March 1988 to February 1989 and some properties of the isolated organisms. P multocida was isolated from 22(43.1%) of 51 growing pigs of 4 to 12 weeks of age and from 8(80.0%) of 10 herds. From nasal turbinates of 102 slaughtered pigs, 47(46.1%) pigs were culture positive and pigs from 8(88.9%) of 9 herds were found to be infected with P multocida. From lungs of 101 slaughtered pigs, 42(41.6%) pigs were culture positive and the pigs from 11(91.7%) of 12 herds were found to be infected with P multocida. The majority of biochemical and cultural properties of the P multocida isolates were identical to those of the standard strains. The isolation frequencies of P multocida in relation to pig snout lesion grades of 0 to 5 were 28.6%, 41.6%, 48.0%, 50.0%, 85.7%, and 100%, respectively.

• Korean Journal of Veterinary Research
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• v.40 no.4
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• pp.707-717
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• 2000

Atropic rhinitis (AR) is one of major respiratory diseases in pigs. AR causes a great economic losses and is considered to be a multifactorial disease in which herd management, heredity, and environment. Several vaccines against have been developed commercially and used in pig farms but the efficacy of each vaccine is still questionable. In this study, one of commercial AR vaccines, which contains inactivated Bordetella bronchiseptica, Pasteurella multocida type D and their toxoid was evaluated for vaccine efficacy by challenge test. Twenty piglets were divided into four groups as follows; group I was piglets from vaccinated sows (twice before parturition); group II was piglets from vaccinated sows (same as group I) and were vaccinated at 1 day old; group III and IV were piglets without any vaccination. Groups I, II, and III were challenged by intranasal instillation of $5.3{\times}10^7$ CFU of B bronchiseptica twice and $1{\times}10^9$ CFU of P multocida five times. Group IV was control group without any vaccination and any challenge. We compared serological results, recovery rate of P multocida by polymerase chain reaction, clinical signs and pathological findings between vaccinated groups and unvaccinated groups for efficacy of the vaccine, Serological responses against B bronchiseptica and toxigenic P multocida type D were not showed evident discrepancy between vaccinated groups and unvaccinated groups assuming that the antibody responses against the vaccine is very delayed. However, growth rate, clinical signs and snout lesion grading in vaccinated groups showed more favorable than those in unvaccinated group. Therefore, AR vaccination in this study is considered to be effective in the prevention of AR in pigs.

• Korean Journal of Veterinary Service
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• v.19 no.2
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• pp.126-138
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• 1996

Lungs from 109 slaughter pigs with gross lesions indicating enzootic Pneumonia of pigs(EPP) and 16 grossly normal lungs, all originating from seven different herds, were subjected to microbiological examinations. The microbiological studies were included both bacterial and mycoplasmal culture. From lungs of 125 slaughter pigs, 87.2% pigs were pneumonia lesions alone or complexly Mycoplasma spp., pasteurella multocidu(p. multocida), Streptococcus spp., and Actinobacillus pleuropneumoniue(A. pleuropneumoniae) were detected in 39.4%, 42.2%, 13.8%, and 3.7% of the pneumonic lungs, respectively. P. multocida was the most frequently isolated organism in pneumonic lungs. Mycoplasmas not isolated organism in 33.9% the pneumonic lungs even If [here are gross lessions mycoplasmas. The amounts of pneumonia in lungs with Mycoplasma spp. alone, a concurrence of Mycoplasma spp. and P. multocida, p. multocida alone, a concurrence of P. multocida and A. pleuropneumoniae, and a concurrence of Mycoplasma spp. and A pleurdpneumoniae were 10.1%, 22.7%, 18.7%, 25%, and 30%, respectively These findings indicated that p. multocida might be involved in the pathogenesis of pneumonia in slaughter pigs. Mycoplasma spp. was also, in this study, associated with higher frequency of pneumonia. The frequency of pigs snout lesion grade 0∼5 inclusive were 27.2%, 28%, 19.2%, 16%, 6.4%, and 3.2% from 125 slaughter pigs. 32(25.6%) pigs were positive and 13~30% in the pigs from seven herds were found to be infected with atrophic rhintis (AR). A total of 46 P. multocida strains In pneumonic lungs were further characterized by capsular serotyping and testing for production of dermonecrotic toxin. 42(91.3%) of strains were capsular A and 4(8.7%) were type D. Out of the type A and type D strains, 86% and 75% were toxigenic, respectively.