Causes of fetal death in the Flemish cattle herd in Brazil

Causes of fetal death in the Flemish cattle herd in Brazil

Flemish cattle in Brazil are on the brink of extinction and are found only in one herd in Lages, Santa Catarina State. This study aimed to uncover the reasons for the recurring abortions in the Flemish cattle herd. Seventeen Flemish fetuses underwent postmortem examinations, with samples collected f...

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Published in:Veterinary World Vol. 16; no. 4; pp. 766 - 772
Main Authors: Marian, Lucas, Withoeft, Jéssica Aline, Costa, Leonardo da Silva, Ribeiro, Luiza Ramos, Melo, Isadora Cristina, Alves, Raquel Silva, Baumbach, Letícia Ferreira, Pinto, Maicon Gaissler Lorena, Snak, Alessandra, Miletti, Luiz Claudio, Ferraz, Sandra Maria, Sfaciotte, Ricardo Antônio Pilegi, Canal, Cláudio Wageck, Casagrande, Renata Assis
Format: Journal Article
Language:English
Published: India Veterinary World 01-04-2023
Subjects:
Abortion
Cattle
Diarrhea
endangered breeds
pathology
protozoan
reproductive disorders
Virus diseases
Brazil
reproductive disorders
abortion
pathology
protozoan
endangered breeds
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Summary:Flemish cattle in Brazil are on the brink of extinction and are found only in one herd in Lages, Santa Catarina State. This study aimed to uncover the reasons for the recurring abortions in the Flemish cattle herd. Seventeen Flemish fetuses underwent postmortem examinations, with samples collected for histopathology and microbiology culture tests, polymerase chain reaction (PCR) test for , and reverse transcription-PCR (RT-PCR) test for bovine viral diarrhea virus (BVDV) from 2015 to 2020. Of the 17 fetuses, was the most common diagnosis and was found in 88% (15/17). One fetus (5.8%) had a coinfection with and , leading to fibrinonecrotic pericarditis. All fetuses tested negative for BVDV by RT-PCR. Of the 107 dams tested by indirect immunofluorescence assay, 26 (25.2%) were anti- seropositive, with 17 (65.4%) aborting and 5 (19.2%) having estrus repetition. Reverse transcription-PCR results showed that 9 (8.4%) of the serum samples collected from dams tested positive, which tested follow-up test 3 months later, indicating a BVDV transient infection. The factors that contributed to neosporosis included dogs' access to pastures and improper disposal of fetal remains, which made it easier for dogs to consume them. This study warns the occurrence of as a cause of reproductive disorders that can lead to abortion in the studied Flemish cattle herd.
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ISSN:0972-8988
2231-0916
DOI:10.14202/vetworld.2023.766-772