Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle

Between July and November 2005, 919 cattle from migratory herds destined for slaughter in Sarh (Chad) were examined antemortem and postmortem to identify animals suspected of bovine tuberculosis (BT). The animals belonged to two main local breeds, Arab (639) and Mbororo (280), comprised 595 females...

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Main Authors: B. N. Ngandolo, C. Diguimbaye-Djaibé, B. Müller, L. Didi, M. Hilty, I. Schiller, E. Schelling, B. Mobeal, B. S. Toguebaye, A. J. Akakpo, J. Zinsstag
Format: Article
Language:English
Published: CIRAD 2009-01-01
Series:Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux
Subjects:
Online Access:http://revues.cirad.fr/index.php/REMVT/article/view/10094
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author B. N. Ngandolo
C. Diguimbaye-Djaibé
B. Müller
L. Didi
M. Hilty
I. Schiller
E. Schelling
B. Mobeal
B. S. Toguebaye
A. J. Akakpo
J. Zinsstag
author_facet B. N. Ngandolo
C. Diguimbaye-Djaibé
B. Müller
L. Didi
M. Hilty
I. Schiller
E. Schelling
B. Mobeal
B. S. Toguebaye
A. J. Akakpo
J. Zinsstag
author_sort B. N. Ngandolo
collection DOAJ
description Between July and November 2005, 919 cattle from migratory herds destined for slaughter in Sarh (Chad) were examined antemortem and postmortem to identify animals suspected of bovine tuberculosis (BT). The animals belonged to two main local breeds, Arab (639) and Mbororo (280), comprised 595 females and 324 males, aged 1 to 11 years, and were divided into four age groups. Antemortem clinical examination and single intradermal comparative cervical tuberculin (SICCT) tests were performed. The postmortem diagnosis (PMD) consisted in the inspection at the slaughterhouse and microscopy for the detection of acid-fast bacilli (AFB). SICCT revealed 95 positive reactors (10.3%) and 102 doubtful results (11%). Furthermore, 109 carcasses (offal) were suspected of tuberculosis and the lesions collected, processed and stained with Ziehl- Neelsen, contained AFB in 47.7% cases only. SICCT and PMD both showed susceptibility to BT of the Mbororo breed as well as of animals aged 4 to 9 years. Despite the discrepancy between the two diagnosis methods, the combined results served to identify 130 cases in the sample tested, of which half were aged 7 to 9 years.
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spelling doaj.art-8dbd46d57852418aa8cb00470bffe3ad2023-09-03T02:08:54ZengCIRADRevue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux0035-18651951-67112009-01-0162151210.19182/remvt.1009410094Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter CattleB. N. Ngandolo0C. Diguimbaye-Djaibé1B. Müller2L. Didi3M. Hilty4I. Schiller5E. Schelling6B. Mobeal7B. S. Toguebaye8A. J. Akakpo9J. Zinsstag10Laboratoire de recherches vétérinaires et zootechniques de Farcha, BP 433, N’Djamena, Tchad.Laboratoire de recherches vétérinaires et zootechniques de Farcha, BP 433, N’Djamena, Tchad.Institut tropical et de santé publique suisse, département d’épidémiologie et de santé publique, Bâle, CH-4002 Suisse.Laboratoire de recherches vétérinaires et zootechniques de Farcha, BP 433, N’Djamena, Tchad.Institut tropical et de santé publique suisse, département d’épidémiologie et de santé publique, Bâle, CH-4002 Suisse.Budesamt für Veterinärwesen, Bern, CH-3003 Schweizer.Institut tropical et de santé publique suisse, département d’épidémiologie et de santé publique, Bâle, CH-4002 Suisse.Société moderne des abattoirs / Abattoir frigorifique de Farcha, N’Djamena, Tchad.Université Cheikh Anta Diop de Dakar, faculté des Sciences et Techniques, département de biologie animale, Dakar-Fann, Sénégal.Ecole inter-Etats des Sciences et Médecines vétérinaires de Dakar, département de microbiologie, Dakar, Sénégal.Institut tropical et de santé publique suisse, département d’épidémiologie et de santé publique, Bâle, CH-4002 Suisse.Between July and November 2005, 919 cattle from migratory herds destined for slaughter in Sarh (Chad) were examined antemortem and postmortem to identify animals suspected of bovine tuberculosis (BT). The animals belonged to two main local breeds, Arab (639) and Mbororo (280), comprised 595 females and 324 males, aged 1 to 11 years, and were divided into four age groups. Antemortem clinical examination and single intradermal comparative cervical tuberculin (SICCT) tests were performed. The postmortem diagnosis (PMD) consisted in the inspection at the slaughterhouse and microscopy for the detection of acid-fast bacilli (AFB). SICCT revealed 95 positive reactors (10.3%) and 102 doubtful results (11%). Furthermore, 109 carcasses (offal) were suspected of tuberculosis and the lesions collected, processed and stained with Ziehl- Neelsen, contained AFB in 47.7% cases only. SICCT and PMD both showed susceptibility to BT of the Mbororo breed as well as of animals aged 4 to 9 years. Despite the discrepancy between the two diagnosis methods, the combined results served to identify 130 cases in the sample tested, of which half were aged 7 to 9 years.http://revues.cirad.fr/index.php/REMVT/article/view/10094Bovin de boucherieTest cutanéTuberculineInspection de viandeTchad
spellingShingle B. N. Ngandolo
C. Diguimbaye-Djaibé
B. Müller
L. Didi
M. Hilty
I. Schiller
E. Schelling
B. Mobeal
B. S. Toguebaye
A. J. Akakpo
J. Zinsstag
Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle
Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux
Bovin de boucherie
Test cutané
Tuberculine
Inspection de viande
Tchad
title Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle
title_full Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle
title_fullStr Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle
title_full_unstemmed Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle
title_short Antemortem and Postmortem Diagnoses of Bovine Tuberculosis in Southern Chad: Case of Slaughter Cattle
title_sort antemortem and postmortem diagnoses of bovine tuberculosis in southern chad case of slaughter cattle
topic Bovin de boucherie
Test cutané
Tuberculine
Inspection de viande
Tchad
url http://revues.cirad.fr/index.php/REMVT/article/view/10094
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