Journal Article

Mycobacterial and Rhodococcus equi infections in pigs in the Czech Republic between the years 1996 and 2004: the causal factors and distribution of infections in the tissues

Parmova, I, Pavlik, I, Dvorska, L, Vrbas, V, Matlova, L, Horvathova, A, Shitaye, J.E

2006

Overview

Between 1996 and 2004, tissue samples from 3,630 slaughtered pigs were examined by gross examination, microscopy after the Ziehl-Neelsen (ZN) staining of homogenised tissues for the detection of acid-fast rods (AFR) and by culture for the presence of mycobacteria and Rhodococcus equi. Tuberculous/tuberculoid lesions were not detected in 6.9% animals slaughtered due to a positive response to avian tuberculin. Various gross lesions were detected in 93.1% animals as follows: adenopathy in 4.1%, tuberculous lesions with caseation in 55.8% and tuberculous lesions with calcification in 33.2% of them. AFR were found in tissues from 56.4% animals. Mycobacteria were isolated from the tissues of 15.8% out of 1,852 animals without detected AFR and from the tissues of 72.5% out of 1,778 animals with detected AFR. Out of 1,579 mycobacterial isolates 94.6% were classified as M. avium complex members as follows: 29.7% M. a. avium and 56.4% M. a. hominissuis. Some of the isolates were members of other mycobacterial species (M. chelonae, M. smegmatis, M. xenopi, M. terrae, M. aurum, M. scrofulaceum, and M. fortuitum). By examination of ZN stained homogenised tissues, AFR were detected significantly more frequently in samples from animals with caseated and/or calcified tuberculous lesions than in tissues from animals without tuberculous lesions.

• Publisher: Czech Academy of Agricultural Sciences
• Subject: AISLAMIENTO / atypical mycobacteria / avian tuberculosis / BAZO / bovine tuberculosis / CERDO / CZECH REPUBLIC / economic losses / FOIE / HIGADO / http://www.fao.org/aos/agrovoc#c_12730 / http://www.fao.org/aos/agrovoc#c_24505 / http://www.fao.org/aos/agrovoc#c_32699 / http://www.fao.org/aos/agrovoc#c_33095 / http://www.fao.org/aos/agrovoc#c_34079 / http://www.fao.org/aos/agrovoc#c_37744 / http://www.fao.org/aos/agrovoc#c_3791 / http://www.fao.org/aos/agrovoc#c_4099 / http://www.fao.org/aos/agrovoc#c_4283 / http://www.fao.org/aos/agrovoc#c_4395 / http://www.fao.org/aos/agrovoc#c_4438 / http://www.fao.org/aos/agrovoc#c_4481 / http://www.fao.org/aos/agrovoc#c_4483 / http://www.fao.org/aos/agrovoc#c_4810 / http://www.fao.org/aos/agrovoc#c_6134 / http://www.fao.org/aos/agrovoc#c_7314 / http://www.fao.org/aos/agrovoc#c_7555 / http://www.fao.org/aos/agrovoc#c_7996 / http://www.fao.org/aos/agrovoc#c_7997 / http://www.fao.org/aos/agrovoc#c_8530 / IDENTIFICACION / IDENTIFICATION / INSPECCION POSTMORTEM / is1245 / is901 / ISOLATION / ISOLEMENT / KIDNEYS / LESION / LESIONES / LESIONS / LINFA / LIVER / LOSSES / LYMPH / LYMPHATIC SYSTEM / LYMPHE / MICROSCOPIA / MICROSCOPIE / MICROSCOPY / MYCOBACTERIUM AVIUM / NECROPSIE / PCR / PERDIDAS / PERTE / PORCIN / POSTMORTEM EXAMINATION / RATE / REIN / REPUBLICA CHECA / REPUBLIQUE TCHEQUE / RHODOCOCCUS EQUI / RINONES / SEROTIPOS / SEROTYPE / SEROTYPES / serotyping / SISTEMA LINFATICO / SPLEEN / SWINE / SYSTEME LYMPHATIQUE / TUBERCULIN / TUBERCULINA / TUBERCULINE / TUBERCULOSE / TUBERCULOSIS / ZOONOSE / ZOONOSES / ZOONOSIS