Study on the prevalence and risk factors of bovine tuberculosis in dairy cattle in Adama city, central Ethiopia

Woldemariam, Tefera; Bekele, Selome; Mamo, Gezahegne; Ameni, Gobena

doi:10.4314/evj.v24i1.6

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…considering the gender of the sacrificial animals (p<0.05). This finding contrasts with a study conducted by Woldemariam and Wossene (2007), which concluded that gender does not influence the susceptibility to Fasciola spp. infection, as both male and female animals were equally prone to infection.…”

Section: Resultscontrasting

confidence: 99%

Fasciolosis Prevalence in Sacrificial Cattle of West Sumatra, Indonesia

Zelpina,

Noor,

Siregar

et al. 2023

WVJ

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Fasciola is a species of the trematode genus that can cause devastating parasitic disease, namely fasciolosis. Fasciola spp. infestation can affect ruminants, such as cows, buffaloes, goats, and sheep, resulting in economic losses to livestock owners. Ruminants are the definitive host for the Fasiola species. This cross-sectional research was conducted on Eid al-Adha/Qurban in July 2022 to determine the prevalence of fasciolosis in sacrificial cattle in Fifty Cities District, West Sumatra, Indonesia. A total of 106 samples of sacrificial cattle liver from the abattoir were investigated. Examination of the liver for the presence of Fasciola spp. was carried out by postmortem examination by removing the liver from the abdominal cavity immediately after slaughter. The livers of all sacrificial cattle were examined by systematic inspection, palpation, and incision for Fasciola spp. infestation. Necropsy results of samples indicated the prevalence of Fasciola spp. (36.79%), which was higher in female animals, compared to males. Based on age, the highest prevalence was at the age of > 4 years, (52.95%), followed by 2 years (39.62%) and 3 years (25.00%). Regarding the cattle breed, the highest prevalences were indicated in Pesisir cattle (47.61%), Simmental cattle (44.44%), Bali cattle (37.28%), Ongole cattle (20%), and Limousine cattle (14.28%). This study revealed that fasciolosis in sacrificial animals in Fifty Cities, West Sumatra, was influenced by gender. Therefore, the findings of this study suggest improving treatment protocol for the prevention of fasciolosis in sacrificial animals.

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Section: Resultscontrasting

confidence: 99%

Fasciolosis Prevalence in Sacrificial Cattle of West Sumatra, Indonesia

Zelpina,

Noor,

Siregar

et al. 2023

WVJ

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“…These results are in agreement with the higher prevalence rates previously reported for female cattle over 4 years [10]. However, some studies have reported no association between body score and prevalence [17][18][19]. Positive results for IDT clearly indicate that the disease exists in the study areas.…”

Section: Discussionsupporting

confidence: 92%

Prevalence and zoonotic risk factors of Mycobacterium bovis tuberculosis in cattle at the cattle-wildlife-human interface in South and East Cameroon

Kouengoua,

Tsissa,

Noudeke

et al. 2024

Vet World

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Background and Aim: Bovine tuberculosis (bTB) is a contagious and notifiable disease, which is prevalent in cattle populations of many countries and in several wildlife species worldwide. However, the role of wildlife in the transmission and/or maintenance of bTB at the human-wild animal-animal interface and the epidemiology of zoonotic disease are poorly understood in Cameroon, where many wildlife species exist. This study aimed to estimate the prevalence and zoonotic risk factors of bTB at the cattle-wildlife-human interface in the South and East regions of Cameroon. Materials and Methods: We conducted a descriptive cross-sectional study from May to October 2022 in the southern region (Vallée du Ntem and Dja et Lobo) and eastern region (Haut Nyong and Lom et Djérem) of Cameroon to determine risk factors for bTB in Zebu Bororo, Goudali, Ndama, and Simmental cattle breeds. A comparative intradermal tuberculin testing (CIDT) was performed on 160 cattle randomly selected from herds using the threshold recommended by the World Organization for Animal Health. An interviewee-administered questionnaire was used to gather epidemiological data on sociodemographics, interaction between cattle and wildlife, and awareness of zoonotic tuberculosis (TB) from 90 cattle professionals. The prevalence of bTB at the herd level and associated risk factors were estimated using multiple logistic regression models. Results: Based on the comparative intradermal tuberculin test (CIDT), the estimated prevalence of bTB in 160 cattle (Zebu Bororo, Goudali, Ndama, and Simmental) in South and East Cameroon was 6.8% (4.35%-9.41%) and 1.8% (0%-3.6%) for threshold values 3 mm and 4 mm, respectively. The prevalence obtained by simple intradermal tuberculin test (IDT) was 0.6% (0%-1.2%) for a threshold value 4 mm. Univariate analysis revealed three risk factors associated with bTB with significant odds ratios (OR; p = 0.05): herd size (OR = 4.88; 95% confidence interval [CI]: 1.24-32.56); cattle aged>10 years (OR = 0.17; 95% CI: 0.05-0.53); and victims of bTB organ seizure (OR = 0.015; 95% CI: 0.002-0.067). Multivariate analysis showed that being a cattle herder and contact between wildlife and livestock due to forage was significantly associated with bTB exposure (adjusted OR = 0.02; p = 0.001). Conclusion: Bovine TB is prevalent in cattle of the South and East Cameroon. Comparative IDT of cattle reared in the epidemiological and environmental context of the study areas yielded better results at a threshold of 3 mm than at a threshold of 4 mm recommended by the World Health Organization. Factors associated with exposure to/appearance of bTB were high herd size, cattle aged >10 years old, seizures of tuberculous organs, shepherding as a profession, and contact between cattle and wildlife can be due to lack of forage. Keywords: bovine tuberculosis prevalence, East and South Cameroon, livestock-wildlife-human interface, zoonotic risk factors.

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“…Our finding implies that a large proportion, i.e., 89%, of tuberculosis infected carcasses passed undetected and the meat is approved for human consumption. Previous studies have also indicated probabilities of 85%, 84% and 70% [ 24 , 26 , 34 ] of missing an animal with TB lesion. Therefore, detailed meat inspection can be considered as a better procedure to detect TB lesions.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Postmortem Inspection Procedures to Diagnose Bovine Tuberculosis at Debre Birhan Municipal Abattoir

Woldemariyam

Markos

Shegu

et al. 2021

Animals

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Routine meat inspection in the abattoir was used to examine carcass for subsequent approval for consumption. However, the chance of missing lesions results in approval of carcass and/or the offal with lesions of tuberculosis. A cross-sectional study was conducted at Debre Birhan Municipal abattoir from October 2016 to May 2017. Lesion prevalence estimation and two meat inspection procedures’ efficacy evaluation was attempted. The breeds of the animals inspected were zebu breeds. Routine abattoir meat inspection involves visual inspection, palpation and incision of intact organs such as the liver and kidneys, as well as inspection, palpation and incision of tracheobronchial, mediastinal and prescapular lymph nodes. The detailed meat inspection involves inspection of each of the carcass. In this case, the seven lobes of the two lungs, lymph nodes and organs were also thoroughly examined. The cut surfaces were examined under bright light sources for the presence of an abscess, cheesy mass, and tubercles in detail. The study involved and compared both routine and detailed meat inspections at the abattoir. Chi-square test of independence and odds ratio were used to see the association of lesion and different risk factors. Based on detailed meat inspection, the overall lesion prevalence of bovine tuberculosis in the carcass of cattle slaughtered at Debre Birhan municipality abattoir was found to be 4.7% but only 0.5% of the carcass examined had detectable bovine tuberculosis lesions when routine abattoir meat inspection alone was used. The majority of the lesions were distributed to the lungs and associated lymph nodes. There was a significant association (p < 0.05) in TB infection rate and body condition score. In conclusion, this study has clearly indicated the prevalence of bovine tuberculosis lesions in the abattoir that are missed by routine abattoir meat inspection. In addition, it showed low sensitivity of the routine meat inspection procedure used. Hence, our study warrants immediate attention to strengthen the current meat inspection practices at Debre Birhan public abattoir.

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Study on the prevalence and risk factors of bovine tuberculosis in dairy cattle in Adama city, central Ethiopia

Cited by 3 publications

References 13 publications

Fasciolosis Prevalence in Sacrificial Cattle of West Sumatra, Indonesia

Fasciolosis Prevalence in Sacrificial Cattle of West Sumatra, Indonesia

Prevalence and zoonotic risk factors of Mycobacterium bovis tuberculosis in cattle at the cattle-wildlife-human interface in South and East Cameroon

Evaluation of Postmortem Inspection Procedures to Diagnose Bovine Tuberculosis at Debre Birhan Municipal Abattoir

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