AI Article Synopsis
- A closed dairy herd in Paraná, Brazil experienced a series of 75 abortions between December 2016 and April 2017.
- Tests on aborted fetuses and farm dogs revealed the presence of Neospora caninum, a parasite linked to the abortions, with significant brain, liver, and heart inflammation observed.
- Serological testing indicated that about one-third of cows and heifers in the herd were infected, likely due to exposure to oocysts from infected carnivores on the farm.
Article Abstract
Between December 2016 and April 2017, a spate of abortions occurred in a closed dairy herd from the central eastern region of Paraná, Brazil, in which 75 cows aborted. To identify its cause, organ fragments were collected from an aborted fetus for histopathology, and the blood samples from a stillborn, 4 aborted fetuses, and 9 farm dogs for indirect fluorescent antibody technique (IFAT). These tests found multifocal non-suppurative encephalitis, periportal hepatitis, and multifocal lymphoplasmacytic myocarditis, and detected anti-Neospora antibodies in all aborted fetuses, and in 5 of the 9 dogs. DNA of Neospora caninum was detected in the brain tissue of an aborted fetus. Blood samples of 340 cows and 146 heifers showed 33.5% and 30.8% seropositivity, respectively. In this closed herd, the parasite was probably introduced by infected domesticated or wild carnivores inhabiting the farm, through the infective oocysts present in their stool.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1590/S1984-29612021045 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!