Prevalência da tuberculose em bovinos abatidos em Minas Gerais

Baptista, Fernando Oliveira; Moreira, É. C.; Santos, Wagner Luiz Moreira dos; Naveda, L.A.B.

doi:10.1590/s0102-09352004000500002

Cited by 17 publications

(11 citation statements)

References 1 publication

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“…Reasons why animals delayed to react may include the inherent chronicity of the disease, or an initial desensitization. While the exact numbers of the prevalence of the disease in Brazil remain unknown (Riet-Correa & Garcia 2007), an apparent mean prevalence of 1-2% has been indicated in reports of limited herd testing (Poletto et al 2004, Oliveira et al 2007, Associação Brasileira de Buiatria 2010) and slaughtering (Andrade et al 1991, Fernandes et al 2003, Ribeiro et al 2003, Baptista et al 2004. In addition, surveys at abattoirs may invariably underestimate tuberculosis prevalence, since the usual line of slaughter is too fast and may not spare the time required to search for lesions, and thus only the most evident lesions are likely to be observed in such way.…”

Section: Discussionmentioning

confidence: 99%

Records of performance and sanitary status from a dairy cattle herd in southern Brazil

Cruz

Raymundo²,

Cerva

et al. 2011

Pesq. Vet. Bras.

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Over the last decades, the emphasis on the health of dairy cows has changed from an individual to a herd level. In this scenario, the role played by the recording system and its interpretation by veterinarians has gained primordial importance. The records of productive and reproductive performance and of sanitary status from a southern Brazilian dairy cattle herd have been presented and discussed. The period of study was 2000-2009. Mean values per lactation period were 349D 8436M 290F 275P 201SCS (D: days in lactation, M: kg of milk yield, F: kg of fat, P: kg of protein and SCS: somatic cell score in 1000 cells/ml of milk). Major indexes of reproductive efficiency included age at first calving (31 months), services per conception (2.1), intercalving interval (428 days), calving to conception interval (146 days), mean annual rates of parturitions (76.2%), fetal losses (9.8-19.0%), and stillbirths (3.6%), apart of voluntary waiting period (94 days). Main information on sanitary status of the herd was associated with the mean prevalence of common disorders of dairy cattle such as anaplasmosis (29.8%), mastitis (27.8%), digital diseases (26.3%), ovarian cysts (21.3%), placental retention (19.7%), postpartum uterine infections (10.6%), and calf diarrhea (23.7%) and pneumonia (16.8%), among others. In addition, culling reasons (low reproductive performance [56.3%] and udder/mastitis problems [33.6%]), causes of cattle deaths (anaplasmosis [16.4%] and leukosis [11.4]), and the impact of cattle diseases such as tuberculosis, leukosis, and neosporosis on the herd have also been presented and succinctly discussed. Numbers between brackets represent rates accumulated in the 10-year period.

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Section: Discussionmentioning

confidence: 99%

Records of performance and sanitary status from a dairy cattle herd in southern Brazil

Cruz

Raymundo²,

Cerva

et al. 2011

Pesq. Vet. Bras.

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“…This study found that, according to the SIE, based on the occurrence of gross lesions suggestive of BTB (0.071%), this disease is present in the cattle herd of the state of Ceará. Condemnation of cattle carcasses with suspicion of BTB were previously reported by Baptista et al (2004), who found a prevalence of 0.07% of suggestive lesions in animals slaughtered in Minas Gerais. There is a wide variation in BTB prevalence from postmortem inspection of cattle in Brazil (0.17 to 5.16%).…”

Section: Discussionmentioning

confidence: 66%

Isolation and genotyping of Mycobacterium bovis in suggestive lesions of tuberculosis in cattle slaughtered in the state of Ceará, Brazil

et al. 2020

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Bovine tuberculosis (BTB) is a zoonosis caused by the bacterium Mycobacterium bovis, which induces the development of nodular and granulomatous lesions in various animal tissues. The recognition of these suggestive gross lesions during postmortem sanitary inspection in slaughterhouses provides a presumptive diagnosis, which requires the use of complementary tests to confirm the disease. This study aimed to verify the occurrence of BTB in cattle slaughtered in slaughterhouses in the state of Ceará, Brazil, using bacteriological and molecular methods. To this end, suggestive lesions were analyzed on carcasses condemned by the “Serviço de Inspeção Estadual” (SIE). The samples were submitted to microbiological analysis using culture media and specific staining followed by spoligotyping molecular technique for identification and genotyping of the mycobacteria. Occurrence of lesions suggestive of BTB was verified in bovine carcasses (0.071%) from different municipalities of the state. These lesions were located mainly in the lung (95.12%), lymph nodes (58.53%), and liver (36.58%). Microbiological culture showed bacterial isolation (17.94%), with the growth of colonies showing morphological and tannic characteristics belonging to genus Mycobacterium spp. Genetic polymorphism analysis identified M. bovis in all isolates, which were discriminated into six spoligotypes (SB0121, SB0295, SB1064, SB0120, SB0870, and SB0852). These profiles have been described in Brazil and several areas of the world, except for profiles SB1064 and SB0852, which were described in the country for the first time. The results show that the association of the diagnostic methods used was the basis for the first study on identification of mycobacteria found in the state, which may provide a database for the epidemiological study of BTB in the state of Ceará.

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“…The prevalence identified in this study was like that presented by PNCEBT (Brasil 2006) and lower than that found by Barbieri et al (2016), although these studies used another diagnostic method (the tuberculin test). Oliveira et al (1986) and Baptista et al (2004), who conducted similar studies in slaughterhouses, reported similar prevalence rates in the state of MG. This similarity demonstrates that the use of the inspection by the SIF as an indicator of prevalence in certain regions covered by the slaughterhouses can evolve as an auxiliary tool for epidemiological surveillance.…”

Section: Discussionmentioning

confidence: 72%

“…It is already clear in the literature that the prevalence of bTB calculated in slaughterhouses is underestimated compared to its prevalence in the general population, given that bTB cases without macroscopic lesions, which are not detectable during a post mortem examination, should be added to this prevalence to come close to the reality (Corner 1994, Baptista et al 2004, Teklul et al 2004). However, this form of diagnosis may be considered as an indicator to provide information regarding the presence of herds infected by the disease, as the animals discarded and sent to slaughterhouses do not constitute a random sample (Asseged et al 2004, Furlanetto et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Spatial and temporal analyses of culls due to bovine tuberculosis in slaughterhouses of Minas Gerais state, Brazil, 2008 to 2012

et al. 2021

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The application of spatial and temporal analysis in epidemiology aims to understand the causes and consequences of spatial and temporal heterogeneity in studies of infectious diseases. Bovine tuberculosis (bTB) is a chronic and progressive infectious disease caused by Mycobacterium bovis and is an important zoonosis worldwide. The aim of this study was to conduct spatial and temporal analyses of a secondary database of bTB-positive cases registered by the Federal Inspection Service in two slaughterhouses from the West of Minas mesoregion of Minas Gerais state, Brazil, from 2008 to 2012 and to suggest its use in epidemiological surveillance. The culled cattle with bTB macroscopic lesions during post mortem inspection were considered positive in this study. The data used were the positive cases registered on the “Sistema de Informações Gerenciais do Serviço de Inspeção Federal” (SIG/SIF - Management Information System of the Federal Inspection Service) of the “Ministério da Agricultura, Pecuária e Abastecimento” (MAPA - Ministry of Agriculture, Livestock and Supplies), the number of animals slaughtered monthly and their municipalities of origin, per slaughterhouse. The prevalence (%) of cases per cattle slaughtered was calculated, and the relationship between these cases of bTB and cases of human tuberculosis (hTB) and the GDP per capita of the mesoregions comprising the municipalities surveyed was evaluated. The prevalence was 1,030 cases of bTB (0.28%). The lowest case numbers and prevalence rates were obtained in 2010, while the highest rates were observed in 2011. Slaughterhouse 1 showed stationarity, while Slaughterhouse 2 showed an increasing annual trend for data since October 2009. A statistical correlation between the numbers of cases of bovine and human TB (p=0.006, r=0.148) was observed. The prevalence for Slaughterhouses 1 and 2 were not correlated (p>0.05). The municipalities of origin demonstrated randomness in their spatial distribution. SIG/SIF-MAPA may be used for the analysis of spatial and temporal distribution to contribute to the monitoring of animal health services with information on the prevalence of culling for bTB in the West of Minas, South/Southwest of Minas, Campo das Vertentes and Zona da Mata mesoregions of Minas Gerais, Brazil.

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Prevalência da tuberculose em bovinos abatidos em Minas Gerais

Cited by 17 publications

References 1 publication

Records of performance and sanitary status from a dairy cattle herd in southern Brazil

Records of performance and sanitary status from a dairy cattle herd in southern Brazil

Isolation and genotyping of Mycobacterium bovis in suggestive lesions of tuberculosis in cattle slaughtered in the state of Ceará, Brazil

Spatial and temporal analyses of culls due to bovine tuberculosis in slaughterhouses of Minas Gerais state, Brazil, 2008 to 2012

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