Reproductive disorders in relation to<i>Neospora caninum, Brucella</i>spp. and bovine viral diarrhoea virus serostatus in breeding and dairy farms of central and southern Ethiopia

Asmare, Kassahun; Regassa, Fikru; Robertson, Lucy J.; Martin, Adam Dunstan; Skjerve, Eystein

doi:10.1017/s0950268812002191

Cited by 30 publications

(34 citation statements)

References 30 publications

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“…Seroprevalence of 11.7% of BVDV was also reported in breeding and dairy farms of southern and central Ethiopia (Asmare et al, 2012). There is no study conducted to determine the rate of persistent of infection caused by BVDV in Ethiopia.…”

Section: Bovine Viral Diarrhea (Bvd)mentioning

confidence: 99%

“…This parasite has been reported to be the most important cause of abortion and neonatal mortality in beef and dairy cattle populations worldwide including Ethiopia (Murray, 2006;Silva et al, 2007;Asmare et al, 2012).…”

Section: Neosporosismentioning

confidence: 99%

“…Recent studies confirmed that neosporosis is prevailing in dairy cattle of Ethiopia (Asmare et al, 2012;Asmare et al, 2013). However, the available published information comparing different pathogens exposure vis-à-vis reproductive disorders is limited to a single article based on the data from central and southern part of the country (Asmare et al, 2013).…”

Section: Neosporosismentioning

confidence: 99%

“…However, the available published information comparing different pathogens exposure vis-à-vis reproductive disorders is limited to a single article based on the data from central and southern part of the country (Asmare et al, 2013). Few studies conducted in Ethiopia indicated that seroprevalence of 17.2% of N. caninum was reported in breeding and dairy farms of southern and central Ethiopia and 13.3% seroprevalence was also recorded in intensive or semi-intensively managed dairy and breeding cattle of Ethiopia (Asmare et al, 2012, Tulu et al 7 2013). Neosporosis appears to be a highly prevalent and widely distributed infectious cause of bovine reproductive disorders in urban and peri-urban smallholder farms, commercial dairy farms and breeding cattle in Ethiopia (Asmare et al, 2013).…”

Section: Neosporosismentioning

confidence: 99%

“…Neosporosis appears to be a highly prevalent and widely distributed infectious cause of bovine reproductive disorders in urban and peri-urban smallholder farms, commercial dairy farms and breeding cattle in Ethiopia (Asmare et al, 2013). N. caninum is common in dairy cattle and is probably a more important cause of abortion in dairy cattle in Ethiopia than other infection cause of abortion (Asmare et al, 2012). The general control and prevention of causes of abortion in dairy cattle summary in Table 2.…”

Section: Neosporosismentioning

confidence: 99%

See 4 more Smart Citations

Review of common causes of abortion in dairy cattle in Ethiopia

Tulu¹,

Deresa²,

Begna³

et al. 2018

J. Vet. Med. Anim. Health

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Abortion in dairy cattle may be caused by infectious and non-infectious agents. Infectious causes of abortion in dairy cattle include brucellosis, leptospirosis, listeriosis, Q fever, bovine viral diarrhea, mycotic abortion and neosporosis. Non-infectious causes of abortion in dairy cattle are genetic and non-genetic disorder. Risk factors associated with abortion in dairy cattle are genetic, environmental, management, geographical factors and infectious factors. Abortion in dairy cows brings about breeding and productive damages. Abortions cause significant economic loss to dairy farm. These losses can be attributed to loss of replacement calves, reduced milk production, costs of treatment, feeding of animals and premature culling of productive cows and heifers. Diagnosis of bovine abortion includes the collection of a complete history of the case and relevant epidemiological data and collected sample for analysis. However, determining the cause of bovine abortion is difficult as abortions are caused by numerous infectious and noninfectious factors. Status of abortion and breeds affected by abortion in Ethiopia were also reviewed.

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Section: Bovine Viral Diarrhea (Bvd)mentioning

confidence: 99%

Section: Neosporosismentioning

confidence: 99%

Section: Neosporosismentioning

confidence: 99%

Section: Neosporosismentioning

confidence: 99%

Section: Neosporosismentioning

confidence: 99%

See 3 more Smart Citations

Review of common causes of abortion in dairy cattle in Ethiopia

Tulu¹,

Deresa²,

Begna³

et al. 2018

J. Vet. Med. Anim. Health

View full text Add to dashboard Cite

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Knowledge and perception of community about causes of cattle abortion and case‐control study of brucellosis as cause of abortion in Jimma zone, Ethiopia

Robi

Gelalcha

Deresa

2021

Veterinary Medicine & Sci

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Background: Abortion, causes by several infectious and non-infectious factors is one of the most critical health problems of cattle in Ethiopia. Thus, this study aimed to assess knowledge and perception of the community about potential causes of abortion and case-control study of brucellosis as a cause of abortion in cattle of study districts. Methods:A cross-sectional study was conducted between October 2016 and October 2017 in selected districts of the Jimma zone using a questionnaire survey. Based on the questionnaire survey, we also carried out a case-control study (141 cases and 282 controls) to confirm whether the most frequently mentioned disease (brucellosis) is associated with abortion. The blood samples were collected from both cases and controls cattle groups and then serum was separated. The presence of antibody against Brucella organism in serum was first tested by Rose Bengal Plate Test (RBPT) and all RBPT positive samples were confirmed using the Complement Fixation Test (CFT).Results: From a total of 180 randomly selected respondents, the majority (59.4%) of them attributed abortion to infectious diseases. Based on the questionnaire survey, brucellosis, leptospirosis and listeriosis were identified as the major infectious causes of abortion in the areas. Physical injuries, shortage of feed and toxic substances were observed as less important non-infection causes of abortion in the study areas. This study also identified improper disposal of aborted materials and birth products, use of communal bulls, sharing communal grazing areas and water sources which favour disease transmission. Exposure to Brucella organism was higher among cases (6.4%) than controls (2.8%) with a statistically significant difference (p = 0.042). Conclusion:Brucellosis is the most important infectious cause of cattle abortion in this study. Thus, important to conduct appropriate control methods and increasing public awareness of the zoonotic transmission of brucellosis are suggested. This finding also recommended the need for further study to isolate and characterise brucellosis as a cause of abortion in cattle.

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Neospora caninum versus Brucella spp. exposure among dairy cattle in Ethiopia: A case control study

Asmare

2014

Trop Anim Health Prod

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This case-control study aimed at assessing the relative association of Neospora caninum and Brucella species exposure with reproductive disorders. The study was carried out between October 2011 and June 2012 on 731 dairy cows sampled from 150 dairy farms in selected 17 conurbations of Ethiopia. Two hundred sixty-six of the cows were categorized as cases based on their history of abortion or stillbirth while the remaining 465 were controls. The presence of antibody to N. caninum was screened using indirect ELISA, while Brucella spp. exposure was assayed serially using Rose Bengal Plate Test and Complement Fixation Test. Exposure to N. caninum was more frequently observed among cases (23.8%) than controls (12.7%), while no significant difference (p > 0.05) was noted for Brucella exposure between the two groups. Moreover, the proportion of cows with disorders like retention of fetal membrane, endometritis and increased inter-calving period were significantly higher (p < 0.05) among Neospora seropositive cows. In conclusion, the finding discloses the strong association of N. caninum with reproductive disorders compared to Brucella spp. exposure. However, neither N. caninum nor Brucella spp. could explain the majority (73.2%) of the reported abortions and stillbirths in cattle. Hence, this observation underscores the need for more intensive investigation on the identification of causes of the aforementioned disorders in dairy cattle of Ethiopia.

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Reproductive disorders in relation toNeospora caninum, Brucellaspp. and bovine viral diarrhoea virus serostatus in breeding and dairy farms of central and southern Ethiopia

Cited by 30 publications

References 30 publications

Review of common causes of abortion in dairy cattle in Ethiopia

Review of common causes of abortion in dairy cattle in Ethiopia

Knowledge and perception of community about causes of cattle abortion and case‐control study of brucellosis as cause of abortion in Jimma zone, Ethiopia

Neospora caninum versus Brucella spp. exposure among dairy cattle in Ethiopia: A case control study

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