Neosporosis is a parasitic disease caused by the obligate intracellular protozoan Neospora caninum, which is responsible for miscarriage cases in cattle countrywide. The vertical or transplacental route with prevalent miscarriages between the 3rd and 6rd months of pregnancyis the main transmission form in cattle. The aim of the present study is to investigate the presence of anti-N.caninum antibodies in (Bos indicus) Nellore female animals and fetuses in Nossa Senhora do Livramento County - MT. Blood samples from 489 female bovines and from 128 bovine fetuses over three months of pregnancy were colleted. The research about the anti N. caninum antibodies in bovine females and fetuses was conducted through the Immunofluorescence technique (IFA). We found 2.45% (12) seropositive and 3.91% (5) seropositive to N. caninum in the present study.
Maedi-Visna (MV) is a chronic progressive multisystem disease that may be asymptomatic for several months or years, but progress rapidly, and may result in death, when signs and symptoms evolve. Viral elimination occurs mainly through direct contact with positive animal secretions. There is no vaccine or treatment, and prophylaxis is necessary for the health of the herd. The present study aimed to verify the seropositivity of MV and evaluate the factors associated with the risk in sheep herds in Paraná. A total of 1549 serum samples were collected from 90 properties. An epidemiological questionnaire was applied to each property, and the variables were analyzed using the Epi-info program and R environment. Of the 1549 samples analyzed, 22 were positive (1.4%) for the micro-AGID test in 13.3% of the properties. Our study demonstrated variables associated with the prevention and the risk of seropositivity to MVV. Conducting a breeding season, supplying concentrated feed, and separating the breeding stock before birth were factors associated with protection, whereas the previous occurrence of problems with lice, breeding on pasture, and keeping cats close to the flock were factors associated with risk. The seropositivity observed in the present study suggests the circulation of MVV in sheep herds in Paraná, which reinforces the need to implement prevention and control measures since the level of technification may be associated with the occurrence of anti-MVV antibodies in herds.
<p>The aim of this research was to identify the occurrence of pathogens causing subclinical mastitis in grade B milk farms of the Jaguapitã county, state of Paraná, Brazil. California Mastitis Test (CMT) were carried out in 400 milk samples from 100 animals and 157 teats from 55 animals (55%) were positive, showed score two or higher to CMT. When these 157 positive samples to CMT were transported for bacterial culture in blood agar, 25.48% (40/157) samples showed no bacterial growth or more than two types of bacterial colonies grew, 28.03% (44/157) were Coagulase-negative staphylococci (CNS), 8.28% (13/157) were <em>Streptococcus uberis</em>, 7.64% (12/157) were <em>Staphylococcus aureus</em>, 7.64% (12/157) were <em>Corynebacterium </em>spp, 7.01% (11/157) were <em>Staphylococcus intermedius</em>, 4.46% (7/157) were <em>Staphylococcus hyicus</em>, 3.82% (6/157) were <em>Bacillus </em>spp., 2.55% (4/157) were <em>Streptococcus dysgalacteae</em>, Enterobacteria and Yeasts. We conclude that CNS is the most relevant subclinical mastitis causative agent.</p><p><strong> </strong></p>