Status of bovine tuberculosis in Addis Ababa dairy farms

Elias, K; Hussein, Daniel; Asseged, B.; Wondwossen, T; Gebeyehu, Mekdes

doi:10.20506/rst.27.3.1850

Cited by 60 publications

(73 citation statements)

References 13 publications

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“…However, the findings of the present study is lower when compared to the previous reports carried in Wolayta Sodo abattoir 14.8% [10], in Jinka 15.4% [28] and 14.8% [29], in Gondar abattoir 15.4% [30], in Butajira municipality abattoir 20.96% [31] and in Deber zeit dairy farms 50% [10]. The lower prevalence rate recorded in the study area might be due to the difference in the sample size considered by different studies or basically due to the difference in origin of the slaughtered animals.…”

Section: Discussioncontrasting

confidence: 97%

“…This finding do strongly agree with many of the previous reports in different corner of the country, in Adama [25], in Gondar [24,30], in Hosanna [14], in Jinka [28,29], and in Butajira [31,35]. This may indicate that the animals under good body condition are with good immune status that can respond to any foreign invading agent better than those with poor body condition which can be immune compromised due to other diseases and malnourished as malnutrition and concurrent infections depress the immunity of the animal, in some cases so that TB lesions develop [36].…”

Section: Discussionsupporting

confidence: 93%

“…This finding is comparable with the previous results indicated in Gondar ELFORA abattoir [24], Jinka municipality abattoir [28] and Butajira municipality abattoir [31]. This finding is also similar to those previous reports of Oloya et al [32].…”

Section: Discussionsupporting

confidence: 93%

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Prevalence of Bovine Tuberculosis Using Abattoir Meat Inspection in Cattle Slaughtered at Gondar Elfora Abattoir, North Ethiopia

Gizaw¹

2017

AVS

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Bovine tuberculosis (BTB) is endemic in Ethiopia and like other developing countries in Africa. Ethiopia haslimited laboratory and other diagnostic facilities. Therefore, abattoir inspection still remains the only option for monitoring BTB prevalence in domestic animals. A cross-sectional type of study was conducted at Gondar ELFORA abattoir from October, 2009 to April, 2010 to assess the prevalence of BTB slaughtered cattle. During this time, a total of 500 animals under gone on ante mortem and detailed post mortem inspections and 43(8.6%) of the animals were found to be with tuberculous lesions. About 84.8% of the tuberculous lesions were found in the lymph nodes of the thoracic cavity (mediastinal and bronchial), followed by 11.6% in the lymph nodes of the abdominal cavity (mesenteric) and the remaining 4.65% in the lymph nodes of the head (retropharyngeal). From the 43 cattle samples that were suspicious to contain tuberculous lesions, samples of lymph nodes were cultured on Lowenstein-Jensen media and growth of Mycobacterium was observed on 5/43(11.6%) samples. In this study, age (χ 2 =3.351, p value=0.187) and breed (χ 2 =1.087, p value=0.29) have not shown any association with post mortem results whereas origin (χ 2 =147.179, p value=0.0252), anatomical sites (χ 2 =468.814, p value=0.00), sex (χ 2 =23.688, p value=0.011), body condition score (χ 2 =17.342, p value=0.00) and culture results (χ 2 =121.48, p value=0.00) have shown associations with post mortem result. Based on this study, it is recommended that integrated preventive approaches involving enhanced surveillance of the disease through establishment of standardized abattoirs well-equipped with laboratory facilities.

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Section: Discussioncontrasting

confidence: 97%

Section: Discussionsupporting

confidence: 93%

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Prevalence of Bovine Tuberculosis Using Abattoir Meat Inspection in Cattle Slaughtered at Gondar Elfora Abattoir, North Ethiopia

Gizaw¹

2017

AVS

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“…These situations provide increased opportunity for contact between infected and susceptible animals, thus increasing the risk of disease transmission (HUMBLET et al, 2009;BELCHIOR et al, 2016;ELIAS et al, 2008;PEREZ et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Prevalence and herd-level risk factors for bovine tuberculosis in the State of Paraná, Brazil

Silva¹,

Gonçalves

Mota

et al. 2016

SCA

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Bovine tuberculosis is a zoonosis with worldwide distribution. Its control has a direct impact on public health and livestock production. This study estimated the prevalence of infected herds and adult bovines and evaluated risk factors associated with the presence of tuberculosis within herds in the state of Paraná. The state was divided in seven livestock regions and independent sampling was performed. A total of 1,419 farms were sampled and 16,045 animals were tested using the intradermal comparative cervical tuberculin diagnostic test. The apparent and estimated prevalence rates in farms and adult bovine animals were 2.15% (95% CI: 1.31-3.00) and 0.42% (95% CI: 0.04-0.81), respectively. It was not possible to state with 95% confidence that the disease prevalence in any region was significantly different from that in other regions. There were no positive animals in the western region, and the prevalence of positive herds and animals in the other regions ranged from 1.03% to 3.89% and 0.17% to 1.08%, respectively. The logistic regression model identified larger herd size (OR = 2.4) and mechanical milking (OR = 5.18) as risk factors associated with the presence of bovine tuberculosis. The combination of low prevalence with risk factors associated to larger herds and more intensive dairy farming, renders the state of Paraná a good candidate for the implementation of industry-based free-herd accreditation schemes and makes a case for planning risk-based surveillance targeted at major dairy basins. Key words: Mycobacterium bovis. Paraná. Prevalence. Risk factors. ResumoA tuberculose bovina é uma zoonose de ampla distribuição geográfica no mundo e seu controle tem impacto direto na saúde pública e na produção pecuária. Neste trabalho, estimou-se a prevalência aparente Silva, M. do C. P. et al.de rebanhos e de bovinos adultos infectados, assim como os fatores de risco associados à presença da tuberculose nos rebanhos do estado do Paraná. O estado foi dividido em sete regiões pecuárias para amostragem independente. No total foram amostradas 1.419 propriedades e testados 16.045 animais. A prova diagnóstica utilizada foi a tuberculinização intradérmica cervical comparada. A prevalência aparente em propriedades e em bovinos adultos no estado do Paraná foi estimada em 2,15% [IC 95%: 1,31-3,00] e 0,42% [IC 95%: 0,04-0,81], respectivamente. Em relação às prevalências estimadas por região do estado, foram observadas heterogeneidades, não foi possível afirmar com 95% de confiança que alguma região se destacou das demais em relação à presença da tuberculose bovina. A região Oeste não apresentou animais positivos na amostra e nas demais regiões as prevalências de rebanho e animais variaram entre 1,03% -3,89% e 0,17% -1,08%, respectivamente. O modelo de regressão logística múltipla identificou como fatores de risco associados à presença de tuberculose bovina, o aumento do tamanho de rebanho (OR = 2.4) e a existência de ordenha mecanizada na propriedade (OR = 5.18). Assim, os resultados demonstraram que a tuberculose bov...

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“…Silva (2012) encontrou uma prevalência de 2,15% de rebanhos positivos e 0,42% de animais positivos no Estado do Paraná e Nespoli (2012) encontrou para o Estado do Mato Grosso, uma prevalência de rebanhos e de animais positivos de 1,3% e 0,123% respectivamente. A heterogeneidade dos valores de prevalência da tuberculose nas diferentes regiões pode estar relacionada com vários fatores tais como fonte de aquisição dos animais, clima, serviços de diagnóstico da tuberculose em cada propriedade (Poletto et al 2004, Oliveira 2008, sistema de produção, tamanho do rebanho, idade, raça, grau de tecnificação no modo de produção da propriedade e presença de animais para produção de carne e de leite no mesmo rebanho (Perez et al 2002, Flores et al 2005, Elias et al 2008, Nespoli 2012.…”

Section: Introductionunclassified

Análise de detecção de cluster na caracterização espaço-temporal da tuberculose bovina no estado da Bahia

Avila¹,

Pérez

Neto

et al. 2013

Pesq. Vet. Bras.

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Pesq. Vet. Bras. 33(11):1313-1318 br Bovine tuberculosis (BTB) is a disease caused by the infection withMycobacterium bovis that affects humans and several mammalian species. BTB is important, because it inflicts farreaching economic losses to infected regions, and due to its impact on public health. Epidemiological surveys were conducted in the State of Bahia between 2008 and 2010 with the objective to estimate the prevalence and to assess the spatial distribution of the disease. The State of Bahia has been stratified into four regions, each of them representing a set of homogeneous epidemiological and demographic characteristics, referred to as Production Circuits. A total of 18,810 more than 2-year-old cattle in 1,305 herds, ranging from 320 to 370 ones per region, and 20 to 40 cattle per herd were randomly selected. A cervical comparative test was applied to each selected animal; reactive cattle and cattle with two consecutive inconclusive tests were considered BTB-positive, whereas non-reactive cattle were considered BTBnegative. Positive herds were classified as those with ≥20 sampled cattle and at least one BTB-positive, as well as those with 40 cattle sampled with ≥2 BTB-positive animals. Latitude and longitude were recorded for each sampled herd with a generic Global Positioning System (GPS). The Cuzick-and-Edwards' test and the spatial scan statistic were used to assess whether BTB was spatially clustered. Herd-level prevalence, as indicated by the proportion of case-herds, was 1.6% (range 0.3 to 2.9% per region). No significant evidence (P<0.05) of spatial clustering was detected, most likely due to the low disease prevalence in the region. Results here suggest that BTB is low prevalent in the State of Bahia and that under these conditions epidemiological outbreaks found cannot be explained by spatially-structured factors.INDEX TERMS: Diseases of cattle, infectious diseases, bovine tuberculosis, temporal-spatial analysis.

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Status of bovine tuberculosis in Addis Ababa dairy farms

Cited by 60 publications

References 13 publications

Prevalence of Bovine Tuberculosis Using Abattoir Meat Inspection in Cattle Slaughtered at Gondar Elfora Abattoir, North Ethiopia

Prevalence of Bovine Tuberculosis Using Abattoir Meat Inspection in Cattle Slaughtered at Gondar Elfora Abattoir, North Ethiopia

Prevalence and herd-level risk factors for bovine tuberculosis in the State of Paraná, Brazil

Análise de detecção de cluster na caracterização espaço-temporal da tuberculose bovina no estado da Bahia

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