Retrospective study of factors associated with bovine infectious abortion and perinatal mortality
•Diagnosing fetal and perinatal calf mortality is challenging.•Despite extensive diagnostic testing, the diagnostic rate is only 39 %.•Neospora caninum is the most detected infectious cause of fetal/perinatal calf loss.•Differences in production type and gestation length of the detected pathogens ar...
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Veröffentlicht in: | Preventive veterinary medicine 2021-06, Vol.191, p.105366-105366, Article 105366 |
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description | •Diagnosing fetal and perinatal calf mortality is challenging.•Despite extensive diagnostic testing, the diagnostic rate is only 39 %.•Neospora caninum is the most detected infectious cause of fetal/perinatal calf loss.•Differences in production type and gestation length of the detected pathogens are identified.•Differences in parity and seasonality of the detected pathogens are identified.
Abortion and perinatal mortality, leading causes of economic loss in cattle industry, are the consequence of both non-infectious and a wide range of infectious causes. However, the relative contribution of pathogens to bovine abortion and perinatal mortality is poorly documented, since available studies involved only a limited number of pathogens. Therefore, the objectives of the present monitoring study were to determine the prevalence of infectious agents associated with bovine abortion and perinatal mortality, and to identify differences in production type, gestation length, parity and seasonality by using mixed effect models (logistic regression). A pre-established sampling protocol based on the collection of the aborted fetus/calf and a corresponding maternal blood sample, involving diagnostic testing for 10 pathogens, was performed. At least one potential causal agent of the abortion or perinatal mortality was detected in 39 % of cases. In these diagnosed cases, Neospora caninum was the most detected pathogen, followed by Trueperella pyogenes, BVDv, Escherichia coli, and Aspergillus fumigatus. Neospora caninum [odds ratio (OR): 0.4; 95 % confidence interval (CI): 0.3–0.7] and Aspergillus fumigatus (OR: 0.1; 95 % CI: 0.1–0.3) were detected less in late versus early gestation. Aspergillus fumigatus was less common in dairy in comparison to beef abortion cases (OR: 0.2; 95 % CI: 0.1–0.6). Winter was associated with a lower positivity for Neospora caninum and BVDv in comparison to warmer seasons. Despite extensive diagnostic testing, an etiological diagnosis was not reached in 61 % of cases, highlighting the need for even more extensive (non-)infectious disease testing or more accurate tests. |
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Abortion and perinatal mortality, leading causes of economic loss in cattle industry, are the consequence of both non-infectious and a wide range of infectious causes. However, the relative contribution of pathogens to bovine abortion and perinatal mortality is poorly documented, since available studies involved only a limited number of pathogens. Therefore, the objectives of the present monitoring study were to determine the prevalence of infectious agents associated with bovine abortion and perinatal mortality, and to identify differences in production type, gestation length, parity and seasonality by using mixed effect models (logistic regression). A pre-established sampling protocol based on the collection of the aborted fetus/calf and a corresponding maternal blood sample, involving diagnostic testing for 10 pathogens, was performed. At least one potential causal agent of the abortion or perinatal mortality was detected in 39 % of cases. In these diagnosed cases, Neospora caninum was the most detected pathogen, followed by Trueperella pyogenes, BVDv, Escherichia coli, and Aspergillus fumigatus. Neospora caninum [odds ratio (OR): 0.4; 95 % confidence interval (CI): 0.3–0.7] and Aspergillus fumigatus (OR: 0.1; 95 % CI: 0.1–0.3) were detected less in late versus early gestation. Aspergillus fumigatus was less common in dairy in comparison to beef abortion cases (OR: 0.2; 95 % CI: 0.1–0.6). Winter was associated with a lower positivity for Neospora caninum and BVDv in comparison to warmer seasons. Despite extensive diagnostic testing, an etiological diagnosis was not reached in 61 % of cases, highlighting the need for even more extensive (non-)infectious disease testing or more accurate tests.</description><identifier>ISSN: 0167-5877</identifier><identifier>EISSN: 1873-1716</identifier><identifier>DOI: 10.1016/j.prevetmed.2021.105366</identifier><identifier>PMID: 33930623</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Abortion diagnosis ; Beef cow ; Dairy cow ; Infectious abortion ; Infectious perinatal mortality</subject><ispartof>Preventive veterinary medicine, 2021-06, Vol.191, p.105366-105366, Article 105366</ispartof><rights>2021 Elsevier B.V.</rights><rights>Copyright © 2021 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c371t-675656aa6b32d90144b0df3ceacdde132fbd0b47fac4adcd2b706f4fe5ae25863</citedby><cites>FETCH-LOGICAL-c371t-675656aa6b32d90144b0df3ceacdde132fbd0b47fac4adcd2b706f4fe5ae25863</cites><orcidid>0000-0002-5305-2133 ; 0000-0003-1026-8433 ; 0000-0002-7042-3952</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.prevetmed.2021.105366$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33930623$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Van Loo, H.</creatorcontrib><creatorcontrib>Pascottini, O. Bogado</creatorcontrib><creatorcontrib>Ribbens, S.</creatorcontrib><creatorcontrib>Hooyberghs, J.</creatorcontrib><creatorcontrib>Pardon, B.</creatorcontrib><creatorcontrib>Opsomer, G.</creatorcontrib><title>Retrospective study of factors associated with bovine infectious abortion and perinatal mortality</title><title>Preventive veterinary medicine</title><addtitle>Prev Vet Med</addtitle><description>•Diagnosing fetal and perinatal calf mortality is challenging.•Despite extensive diagnostic testing, the diagnostic rate is only 39 %.•Neospora caninum is the most detected infectious cause of fetal/perinatal calf loss.•Differences in production type and gestation length of the detected pathogens are identified.•Differences in parity and seasonality of the detected pathogens are identified.
Abortion and perinatal mortality, leading causes of economic loss in cattle industry, are the consequence of both non-infectious and a wide range of infectious causes. However, the relative contribution of pathogens to bovine abortion and perinatal mortality is poorly documented, since available studies involved only a limited number of pathogens. Therefore, the objectives of the present monitoring study were to determine the prevalence of infectious agents associated with bovine abortion and perinatal mortality, and to identify differences in production type, gestation length, parity and seasonality by using mixed effect models (logistic regression). A pre-established sampling protocol based on the collection of the aborted fetus/calf and a corresponding maternal blood sample, involving diagnostic testing for 10 pathogens, was performed. At least one potential causal agent of the abortion or perinatal mortality was detected in 39 % of cases. In these diagnosed cases, Neospora caninum was the most detected pathogen, followed by Trueperella pyogenes, BVDv, Escherichia coli, and Aspergillus fumigatus. Neospora caninum [odds ratio (OR): 0.4; 95 % confidence interval (CI): 0.3–0.7] and Aspergillus fumigatus (OR: 0.1; 95 % CI: 0.1–0.3) were detected less in late versus early gestation. Aspergillus fumigatus was less common in dairy in comparison to beef abortion cases (OR: 0.2; 95 % CI: 0.1–0.6). Winter was associated with a lower positivity for Neospora caninum and BVDv in comparison to warmer seasons. Despite extensive diagnostic testing, an etiological diagnosis was not reached in 61 % of cases, highlighting the need for even more extensive (non-)infectious disease testing or more accurate tests.</description><subject>Abortion diagnosis</subject><subject>Beef cow</subject><subject>Dairy cow</subject><subject>Infectious abortion</subject><subject>Infectious perinatal mortality</subject><issn>0167-5877</issn><issn>1873-1716</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkE1PAyEQhonRaK3-BeXoZSsfu7Aem8avpImJ0TNhYYg022UFWtN_L03VqyfI8LzMzIPQNSUzSqi4Xc3GCFvIa7AzRhgt1YYLcYQmtJW8opKKYzQppKyaVsozdJ7SihAiRNucojPO7zgRjE-QfoUcQxrBZL8FnPLG7nBw2GmTQ0xYpxSM1xks_vL5A3dh6wfAfnD7RNgUogux3AasB4tHiH7QWfd4Xaq693l3gU6c7hNc_pxT9P5w_7Z4qpYvj8-L-bIyXNJcCdmIRmgtOs7sHaF13RHruAFtrAXKmess6WpZBqu1NZZ1kghXO2g0sKYVfIpuDv-OMXxuIGW19slA3-sBypyKNYy0kkhCCyoPqCmrpwhOjdGvddwpStTer1qpP79q71cd_Jbk1U-TTbd_-839Ci3A_ABAWXXrIapkPAwGrI_FmLLB_9vkG-5Lk8U</recordid><startdate>20210601</startdate><enddate>20210601</enddate><creator>Van Loo, H.</creator><creator>Pascottini, O. Bogado</creator><creator>Ribbens, S.</creator><creator>Hooyberghs, J.</creator><creator>Pardon, B.</creator><creator>Opsomer, G.</creator><general>Elsevier B.V</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-5305-2133</orcidid><orcidid>https://orcid.org/0000-0003-1026-8433</orcidid><orcidid>https://orcid.org/0000-0002-7042-3952</orcidid></search><sort><creationdate>20210601</creationdate><title>Retrospective study of factors associated with bovine infectious abortion and perinatal mortality</title><author>Van Loo, H. ; Pascottini, O. Bogado ; Ribbens, S. ; Hooyberghs, J. ; Pardon, B. ; Opsomer, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-675656aa6b32d90144b0df3ceacdde132fbd0b47fac4adcd2b706f4fe5ae25863</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Abortion diagnosis</topic><topic>Beef cow</topic><topic>Dairy cow</topic><topic>Infectious abortion</topic><topic>Infectious perinatal mortality</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Van Loo, H.</creatorcontrib><creatorcontrib>Pascottini, O. Bogado</creatorcontrib><creatorcontrib>Ribbens, S.</creatorcontrib><creatorcontrib>Hooyberghs, J.</creatorcontrib><creatorcontrib>Pardon, B.</creatorcontrib><creatorcontrib>Opsomer, G.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Preventive veterinary medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Van Loo, H.</au><au>Pascottini, O. Bogado</au><au>Ribbens, S.</au><au>Hooyberghs, J.</au><au>Pardon, B.</au><au>Opsomer, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Retrospective study of factors associated with bovine infectious abortion and perinatal mortality</atitle><jtitle>Preventive veterinary medicine</jtitle><addtitle>Prev Vet Med</addtitle><date>2021-06-01</date><risdate>2021</risdate><volume>191</volume><spage>105366</spage><epage>105366</epage><pages>105366-105366</pages><artnum>105366</artnum><issn>0167-5877</issn><eissn>1873-1716</eissn><abstract>•Diagnosing fetal and perinatal calf mortality is challenging.•Despite extensive diagnostic testing, the diagnostic rate is only 39 %.•Neospora caninum is the most detected infectious cause of fetal/perinatal calf loss.•Differences in production type and gestation length of the detected pathogens are identified.•Differences in parity and seasonality of the detected pathogens are identified.
Abortion and perinatal mortality, leading causes of economic loss in cattle industry, are the consequence of both non-infectious and a wide range of infectious causes. However, the relative contribution of pathogens to bovine abortion and perinatal mortality is poorly documented, since available studies involved only a limited number of pathogens. Therefore, the objectives of the present monitoring study were to determine the prevalence of infectious agents associated with bovine abortion and perinatal mortality, and to identify differences in production type, gestation length, parity and seasonality by using mixed effect models (logistic regression). A pre-established sampling protocol based on the collection of the aborted fetus/calf and a corresponding maternal blood sample, involving diagnostic testing for 10 pathogens, was performed. At least one potential causal agent of the abortion or perinatal mortality was detected in 39 % of cases. In these diagnosed cases, Neospora caninum was the most detected pathogen, followed by Trueperella pyogenes, BVDv, Escherichia coli, and Aspergillus fumigatus. Neospora caninum [odds ratio (OR): 0.4; 95 % confidence interval (CI): 0.3–0.7] and Aspergillus fumigatus (OR: 0.1; 95 % CI: 0.1–0.3) were detected less in late versus early gestation. Aspergillus fumigatus was less common in dairy in comparison to beef abortion cases (OR: 0.2; 95 % CI: 0.1–0.6). Winter was associated with a lower positivity for Neospora caninum and BVDv in comparison to warmer seasons. Despite extensive diagnostic testing, an etiological diagnosis was not reached in 61 % of cases, highlighting the need for even more extensive (non-)infectious disease testing or more accurate tests.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>33930623</pmid><doi>10.1016/j.prevetmed.2021.105366</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-5305-2133</orcidid><orcidid>https://orcid.org/0000-0003-1026-8433</orcidid><orcidid>https://orcid.org/0000-0002-7042-3952</orcidid></addata></record> |
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subjects | Abortion diagnosis Beef cow Dairy cow Infectious abortion Infectious perinatal mortality |
title | Retrospective study of factors associated with bovine infectious abortion and perinatal mortality |
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