Campylobactériose génitale bovine dans le Pantanal, Etat du Mato Grosso do Sul, Brésil

Pellegrin, A. O.; Lage, Andrey Pereira; Sereno, J. R. B.; Ravaglia, E.; Costa, M. S.; Leite, R. C.

doi:10.19182/remvt.9820

Cited by 10 publications

(11 citation statements)

References 10 publications

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“…There is no literature available on the quantification of economic losses caused by BGC in South America. In the last decades high prevalence of BGC has been reported in dairy and beef herds in Brazil (20, 73–79), Uruguay (49), Argentina (29, 36, 80), and Colombia (81). A summary of studies reporting prevalence of BGC in different regions of South American countries between 1984 and 2018 is presented in Table 2.…”

Section: Economic Impact and Prevalencementioning

confidence: 99%

“…Several studies have also been carried out in different regions of Brazil, diagnosing BGC by DIF in up to 51.7% of the animals evaluated (20, 73–76). Rocha et al (75) determined that the prevalence in bulls, by means of DIF, was 35.9%; however, it drop to 10.3% when using bacterial culture.…”

Section: Economic Impact and Prevalencementioning

confidence: 99%

“…Direct immunofluorescence can be used as a screening test for C. fetus (20, 49, 73–75, 80). However, DIF should not be used for the definitive diagnosis of Cfv infection.…”

Section: Economic Impact and Prevalencementioning

confidence: 99%

“…Herds with Cfv infection often have reduced breeding efficiency, including pregnancy rates lower than expected, embryonic losses, sporadic abortions, increased number of services per conception, extended calving season, and a longer interval between calving. Abortions are more commonly detected between the 4th and 6th months of gestation (15, 20–23). The average pregnancy rate in infected herds varies depending on the relative proportion of carriers, susceptible and immune breeding-age females, and infected and non-infected bulls (21, 24).…”

Section: Introductionmentioning

confidence: 99%

“…Campylobacter fetus venerealis lodges in the preputial crypts; the hosts do not develop any clinical signs or lesions due to this infection, acting as asymptomatic carriers. Infection does not affect libido or sperm quality (9, 20). For this reason, bulls should be the target category for diagnostic approaches, epidemiological studies, as well as control and prevention strategies.…”

Section: Introductionmentioning

confidence: 99%

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Diagnosis of Bovine Genital Campylobacteriosis in South America

et al. 2018

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Bovine genital campylobacteriosis (BGC) is a venereal infectious disease that affects reproduction. It is caused by the Gram-negative bacillus Campylobacter fetus subspecies venerealis (Cfv), which may include the biotype intermedius. The bull is a lifelong asymptomatic carrier and transmitter of the disease. In females Cfv may cause infertility and sporadic abortion. The objective of this study is to review and discuss methods for the diagnosis of BGC, its prevalence and economic impact in South America. BGC is a worldwide distributed disease and can cause a pregnancy rate decrease of 15–25%. The farm prevalence of BGC in different regions of South American countries shows a variation between 2.3 and 100%. Discrepancies may depend on the differences on sanitary, management, and reproductive practices between farms and regions, but also on the interpretation of different diagnostic tests. Currently known laboratory tests include bacterial culture, direct immunofluorescence, immunoenzymatic assays, vaginal mucus agglutination test, PCR-based methods, histology and immunohistochemistry, which are applied and interpreted in diagnostic laboratories at different scales. Epidemiologic data of BGC in South America should be interpreted with caution. High prevalence has been reported in some studies, although the low specificity of the diagnostic tests used could lead to an overestimation of the results.

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Section: Economic Impact and Prevalencementioning

confidence: 99%

Section: Economic Impact and Prevalencementioning

confidence: 99%

“…Direct immunofluorescence can be used as a screening test for C. fetus (20, 49, 73–75, 80). However, DIF should not be used for the definitive diagnosis of Cfv infection.…”

Section: Economic Impact and Prevalencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diagnosis of Bovine Genital Campylobacteriosis in South America

et al. 2018

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Investigation of Campylobacter fetus in breeding bulls of private farms in Bangladesh

Hoque

Islam

Saddam

et al. 2022

Veterinary Medicine & Sci

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Background Bovine genital campylobacteriosis (BGC) is a venereal disease caused by Campylobacter fetus that has a negative impact on animal reproduction. The bull is considered to be a symptomless carrier that spreads the disease agent to breeding cows, causing infertility and sporadic abortion. Aim The study aims to estimate the prevalence, identify risk factors of Campylobacter fetus ( C. fetus ) infection and antimicrobial resistance pattern of the C. fetus isolates. Method A cross‐sectional survey was conducted in Mymensingh district of Bangladesh. Bull smegma samples (single sample from each bull) were collected from 300 bulls from four farms and tested via culture, biochemical identification and finally 16S rRNA and cdtA gene‐based molecular assays (PCR) for herd and animal‐level prevalence estimation. Herd‐ and animal‐level data on risk factors were collected from the farmers using a pretested questionnaire and analysed by univariable and multivariable logistic regression models with a p value of <0.05 was taken statistically significant for both analyses. Results Among the surveyed farms, 75% (95% CI: 19.4%–99.4%) were confirmed to have bulls infected with Campylobacter fetus at herd level. However, animal‐level occurrence of C. fetus was estimated to be 8.7% (26/300) (95% CI: 5.7%–12.4%). Natural service increases the odds of campylobacteriosis 38.18 times (95% CI: 13.89–104.94) in comparison to artificial insemination for C . fetus infection in bulls. Significantly, half of the isolates (50%, n = 13) were identified to be multidrug resistant (MDR) for three to five antimicrobial agents. Conclusion This study highlights the need to develop official guidelines for C. fetus control and prevention in Bangladesh including mandatory artificial insemination in reproductive cows and heifers, routine screening of breeding bulls for C. fetus free status.

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Prevalence and risk factors associated with bovine genital campylobacteriosis and bovine trichomonosis in the state of Pernambuco, Brazil

Oliveira

Silva

Filho

et al. 2015

Trop Anim Health Prod

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The aim of the present study was to determine the prevalence and risk factors associated with Campylobacter fetus subsp. venerealis and Tritrichomonas foetus infection in cows from dairy herds in the state of Pernambuco, Brazil. In total, 383 samples of cervico-vaginal mucus were collected from cows on 21 herds in 19 districts. Genomic DNA was extracted from the samples and submitted for polymerase chain reaction analysis. An investigative questionnaire was used to analyze the risk factors, using questions related to reproductive and hygiene/sanitation management. A prevalence of 1.8% (0.8-3.9%; confidence interval (CI) 95%) and 33.4% (28.7-38.4%; CI 95%) was found for C. fetus subsp. venerealis and T. foetus, respectively. In terms of the number of foci, 28.6% of the herds contained at least one animal that was positive for C. fetus subsp. venerealis and 90.5% for T. foetus. The present study identified herds larger than 100 animals as a risk factor for bovine genital campylobacteriosis (OR = 7.2; CI 1.3-38.4%; p = 0.020) and the use of natural breeding as a risk factor for bovine trichomonosis (OR = 2.4; CI 1.1-5.9%; p = 0.041). In conclusion, C. fetus subsp. venerealis and T. foetus infections occurred in the region studied and high numbers of foci were found. Thus, prophylaxis and control measures, such as diagnosis, separation, and sexual rest for infected females, are suggested. An artificial insemination program with early rigorous sanitary care should be implemented on the properties in order to avoid the spread of agents in the herds.

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Campylobactériose génitale bovine dans le Pantanal, Etat du Mato Grosso do Sul, Brésil

Cited by 10 publications

References 10 publications

Diagnosis of Bovine Genital Campylobacteriosis in South America

Diagnosis of Bovine Genital Campylobacteriosis in South America

Investigation of Campylobacter fetus in breeding bulls of private farms in Bangladesh

Prevalence and risk factors associated with bovine genital campylobacteriosis and bovine trichomonosis in the state of Pernambuco, Brazil

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