veterinary abortion

Summary

Summary: Premature expulsion of the FETUS in animals.

Publications

  1. Neospora caninum and Leptospira serovar serostatus in dairy cattle in Ontario
    Andrew S Peregrine
    Department of Pathobiology, Department University of Guelph, Guelph, Ontario
    Can Vet J 47:467-70
  2. Survey of Neospora caninum antibodies in dairy and beef cattle from five regions of the United States
    Ines Rodriguez
    Animal Diagnostic Laboratory, Department of Veterinary Science, Pennsylvania State University, University Park, PA 16802, USA
    Vet Ther 3:396-401
  3. Transplacental transmission and abortion in cows administered Neospora caninum oocysts
    L F P Gondim
    Department of Veterinary Pathobiology, University of Illinois, 2001 South Lincoln Avenue, Urbana, Illinois 61802, USA
    J Parasitol 90:1394-400
  4. A Swiss case-control study to assess Neospora caninum-associated bovine abortions by PCR, histopathology and serology
    H Sager
    Institute of Parasitology, University of Berne, Länggass-Strasse 122, CH-3001 Berne, Switzerland
    Vet Parasitol 102:1-15
  5. Risk of abortion associated with Neospora caninum during different lactations and evidence of congenital transmission in dairy cows
    Jorge Hernandez
    Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610-0136, USA
    J Am Vet Med Assoc 221:1742-6
  6. Seroepidemiology of Neospora caninum and Toxoplasma gondii in cattle and water buffaloes (Bubalus bubalis) in the People's Republic of China
    Jinhai Yu
    Parasitology Laboratory, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, PR China
    Vet Parasitol 143:79-85
  7. Neosporosis in bovine dairy herds from the west of France: detection of Neospora caninum DNA in aborted fetuses, seroepidemiology of N. caninum in cattle and dogs
    P H Pitel
    Laboratoire Départemental Frank Duncombe, 1 Route de Rosel, 14053 Cedex, Caen, France
    Vet Parasitol 102:269-77
  8. Reproductive performance of a cow-calf herd following a Neospora caninum-associated abortion epidemic
    C L Waldner
    Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0
    Can Vet J 42:355-60
  9. Neospora caninum serostatus and milk production of Holstein cattle
    Jamie C Hobson
    Department of Population Medicine, Ontario Veterinary College, Guelph, Canada
    J Am Vet Med Assoc 221:1160-4
  10. Neospora caninum serostatus and culling of Holstein cattle
    Gerard Cramer
    Department of Population Medicine, Ontario Veterinary College, University of Guelph, Canada
    J Am Vet Med Assoc 221:1165-8

Scientific Experts

Detail Information

Publications62

  1. Neospora caninum and Leptospira serovar serostatus in dairy cattle in Ontario
    Andrew S Peregrine
    Department of Pathobiology, Department University of Guelph, Guelph, Ontario
    Can Vet J 47:467-70
    ..Leptospira titer increased with parity. Amongst herds not vaccinated against Leptospira, the proportions of herds with > or = 1 animal seropositive to serovar hardjo, icterohaemorrhagiae, or pomona were 45%, 42%, and 58%, respectively...
  2. Survey of Neospora caninum antibodies in dairy and beef cattle from five regions of the United States
    Ines Rodriguez
    Animal Diagnostic Laboratory, Department of Veterinary Science, Pennsylvania State University, University Park, PA 16802, USA
    Vet Ther 3:396-401
    ..Abortion rates ranging from 2% to 19% were reported. The epidemiologic data collected from the questionnaire suggested that the presence of farm dogs does not increase the risk of exposure of cows to N. caninum...
  3. Transplacental transmission and abortion in cows administered Neospora caninum oocysts
    L F P Gondim
    Department of Veterinary Pathobiology, University of Illinois, 2001 South Lincoln Avenue, Urbana, Illinois 61802, USA
    J Parasitol 90:1394-400
    ..This study demonstrates that infection with N. caninum oocysts can cause transplacental transmission and abortion in cattle...
  4. A Swiss case-control study to assess Neospora caninum-associated bovine abortions by PCR, histopathology and serology
    H Sager
    Institute of Parasitology, University of Berne, Länggass-Strasse 122, CH-3001 Berne, Switzerland
    Vet Parasitol 102:1-15
    ..caninum antibody concentrations in adult cattle, including especially seronegativity of some individual animals. Thus, seronegativity in a mother cow or heifer does not exclude N. caninum-associated abortions...
  5. Risk of abortion associated with Neospora caninum during different lactations and evidence of congenital transmission in dairy cows
    Jorge Hernandez
    Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610-0136, USA
    J Am Vet Med Assoc 221:1742-6
    ..Seropositive cows that have aborted previously may have subsequent abortions attributable to N caninum. Congenital infection was the main mode of N caninum transmission in a cohort of female calves...
  6. Seroepidemiology of Neospora caninum and Toxoplasma gondii in cattle and water buffaloes (Bubalus bubalis) in the People's Republic of China
    Jinhai Yu
    Parasitology Laboratory, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, PR China
    Vet Parasitol 143:79-85
    ..05). There was no apparent association of N. caninum seropositivity with age or number of pregnancies. This is the first report on the seroprevalence of N. caninum in cattle and water buffaloes in China...
  7. Neosporosis in bovine dairy herds from the west of France: detection of Neospora caninum DNA in aborted fetuses, seroepidemiology of N. caninum in cattle and dogs
    P H Pitel
    Laboratoire Départemental Frank Duncombe, 1 Route de Rosel, 14053 Cedex, Caen, France
    Vet Parasitol 102:269-77
    ..No difference in age was found between seropositive and seronegative cows. Results indicate that N. caninum is an important and stable cause of abortion in cattle in France...
  8. Reproductive performance of a cow-calf herd following a Neospora caninum-associated abortion epidemic
    C L Waldner
    Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0
    Can Vet J 42:355-60
    ..0; 95% confidence interval, 1.1 to 3.7). No subsequent associations with increased risk of abortion, stillbirth, or nonpregnancy were identified...
  9. Neospora caninum serostatus and milk production of Holstein cattle
    Jamie C Hobson
    Department of Population Medicine, Ontario Veterinary College, Guelph, Canada
    J Am Vet Med Assoc 221:1160-4
    ..In herds with abortion problems, regardless of cause, N. caninum-seropositive cattle produced less milk, whereas in herds without abortion problems, N. caninum-seropositive cattle produced the same amount of milk as seronegative cattle...
  10. Neospora caninum serostatus and culling of Holstein cattle
    Gerard Cramer
    Department of Population Medicine, Ontario Veterinary College, University of Guelph, Canada
    J Am Vet Med Assoc 221:1165-8
    ..caninum serostatus of Holstein cows in Ontario was not significantly associated with either time to culling or risk of culling. Thus, N. caninum serostatus alone should not be used to determine whether cows should be culled...
  11. [The importance of bovine neosporosis for abortion in Switzerland]
    I Fischer
    Institut für Parasitologie der Universität Bern
    Schweiz Arch Tierheilkd 145:114-23
    ..Additionally, no significant differences were detected concerning risk factors such as the presence of farm dogs and the disposal procedure for placental and fetal material...
  12. Associations between pregnancy outcome and serological response to Neospora caninum among a group of dairy heifers
    J F Weston
    Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand
    N Z Vet J 53:142-8
    ..caninum-infected herds, but would assist in documenting the occurrence of abortion. Reliance on a high (>1:2,000) IFAT titre to rule-in N. caninum as a cause of abortion is likely to produce false-positive results...
  13. Seroepidemiology of Neospora caninum infection in dairy cattle herds in Mashhad area, Iran
    G R Razmi
    Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, P O Box 91775 1793, Mashhad, Iran
    Vet Parasitol 135:187-9
    ..Abortion was significantly associated with seropositivity of cattle. The highest risk of abortion was observed in the 1-2-year-old cows. Our results indicate that Neospora infection is widespread in Iran...
  14. Serological prevalence of Neospora caninum in healthy and aborted dairy cattle in Mashhad, Iran
    A Sadrebazzaz
    Razi Serum and Vaccine Research Institute, P O Box 91735 174, Mashhad, Iran
    Vet Parasitol 124:201-4
    ..60%). Comparison of N. caninum serological status with age groups (< or =2 years, 2-4 years, > or =4 years) showed no significant difference. Of the 139 aborted cattle sampled, 19.42% were seropositive for N. caninum...
  15. Economic considerations for diagnostic and control options for Neospora caninum-induced abortions in endemically infected herds of beef cattle
    Robert L Larson
    Commercial Agriculture Program, University Outreach and Extension, Department of Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA
    J Am Vet Med Assoc 224:1597-604
    ..Of the potential control strategies evaluated, testing the entire herd for N caninum infection and excluding the daughters of seropositive dams as potential replacements provided the best economic return.)..
  16. Dynamics of anti-Neospora caninum antibodies during gestation in chronically infected dairy cows
    C Nogareda
    Department of Animal Production, University of Lleida, Spain
    Vet Parasitol 148:193-9
    ....
  17. Seroprevalence of Neospora caninum infection in dairy and beef cattle in Paraguay
    Takeshi Osawa
    Moredun Research Institute, International Research Centre, Pentland Science Park, Bush Loan, Penicuik EH26 OPZ, UK
    Vet Parasitol 110:17-23
    ..In conclusion, N. caninum infection is present among Paraguayan beef and dairy cattle, and it may be an important cause of bovine abortion in Paraguay...
  18. Neosporosis as a cause of abortion in dairy cattle in Rio Grande do Sul, southern Brazil
    L G Corbellini
    Faculdade de Medicina Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9090, Cx. Postal 15094, CEP 91540-000, Porto Alegre, Rio Grande do Sul, Brazil
    Vet Parasitol 103:195-202
    ..These results suggest that N. caninum is an important cause of abortion in dairy cattle in Rio Grande do Sul State, Brazil...
  19. First confirmed case of Neospora caninum-associated abortion outbreak in Portugal
    G Thompson
    The Abel Salazar Institute for Biomedical Sciences, Department of Clinical Veterinary Medicine, University of Porto, Portugal
    Reprod Domest Anim 36:309-12
    ..caninum as the major cause of abortions in this dairy herd. This is the first report that associates N. caninum infection with bovine abortions in Portugal...
  20. Seroepidemiology of neosporosis in dairy cattle in Uruguay
    Yoshihito Kashiwazaki
    Division de Laboratorios Veterinarios Miguel C Rubino, Casilla de Correo 6577, Ruta 8, Km 17 1 2, Montevideo, Uruguay
    Vet Parasitol 120:139-44
    ..43). A fitted binomial generalised linear model revealed that there was an increasing risk of abortion with increasing IFAT titre and increasing age between 2 and 6 years...
  21. [Bovine neosporosis: general concepts, immunity and perspectives for vaccination]
    D P Moore
    Estación Experimental Agropecuaria, Patología Veterinaria, Instituto Nacional de Tecnologia Agropecuaria (INTA, CC 276, 7620 Balcarce, Argentina
    Rev Argent Microbiol 37:217-28
    ..General concepts about neosporosis with emphasis in the immune response and perspectives for vaccination are mentioned in the present review...
  22. A survey of abortifacient infectious agents in livestock in Luzon, the Philippines, with emphasis on the situation in a cattle herd with abortion problems
    Satoru Konnai
    Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060 0818, Japan
    Acta Trop 105:269-73
    ..BVDV was not detected in these herds. The findings of this exploratory study indicate a relationship between infection and bovine abortion and that a lager study is required to statistically confirm this relationship...
  23. First isolation of Neospora caninum from an aborted bovine fetus in Spain
    N Canada
    CECA, Center for the Study of Animal Sciences, University of Porto, Porto, Portugal
    J Parasitol 90:863-4
    ..The sequences of the amplified gene 5 fragments (GenBank AY494944) were found to be identical to that of an Austrian isolate of N. caninum but not to that of NC-1. This is the first isolation of viable N. caninum from Spain...
  24. Humoral immune reaction of newborn calves congenitally infected with Neospora caninum and experimentally treated with toltrazuril
    Corinne Haerdi
    Herd Health, Department of Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstr. 260, CH-8057 Zurich, Switzerland
    Parasitol Res 99:534-40
    ..caninum in newborn calves. As a consequence, we plan to follow up toltrazuril-medicated calves clinically and serologically over a longer period and investigate if they give birth to Neospora-free calves...
  25. First Portuguese isolate of Neospora caninum from an aborted fetus from a dairy herd with endemic neosporosis
    Nuno Canada
    Center for the Study of Animal Sciences (CECA/ICETA, University of Porto, Porto, Portugal
    Vet Parasitol 110:11-5
    ..This is the first isolation of a viable N. caninum-like parasite from any host in Portugal...
  26. A high rate of seroconversion for Neospora caninum in a dairy herd without an obvious increased incidence of abortions
    T h Dijkstra
    Animal Health Service, P O Box 9, 7400 AA, Deventer, The Netherlands
    Vet Parasitol 109:203-11
    ..However, also evidence was found for an unexplained ongoing horizontal transmission after the initial point source exposure...
  27. Diagnostic significance of Neospora caninum DNA detected by PCR in cattle serum
    Linda M McInnes
    Division of Health Sciences, School of Veterinary and Biomedical Science, Murdoch University, South Street, Murdoch, Western Australia 6150, Australia
    Vet Parasitol 142:207-13
    ..However, the presence or absence of N. caninum antibodies or DNA did not support nor exclude N. caninum as the cause of abortion. Additional criteria are required for a positive diagnosis of abortion caused by N. caninum...
  28. Serological status and abortion rate in progeny obtained by natural service or embryo transfer from Neospora caninum-seropositive cows
    C M Campero
    Instituto Nacional de Tecnología Agropecuaria INTA, C C 276, 7620 Balcarce, Argentina
    J Vet Med B Infect Dis Vet Public Health 50:458-60
    ..All heifers obtained by natural service were seropositive and six of 16 pregnancies ended in abortion. All heifers obtained by ET were seronegative and only two abortions of 15 pregnancies were recorded...
  29. First report of Neospora caninum abortion in a beef cow-calf herd from Andorra, Europe
    Ramon Armengol
    Parasitologia y Enfermedades Parasitarias, Departament Sanitat Animal, Facultat de Veterinaria, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
    J Parasitol 92:1361-2
    ..caninum antibodies at the time of abortion but not 2 mo before abortion took place. This is the first report of N. caninum abortion in Andorra and the first confirmed N. caninum abortion in an acutely infected cow...
  30. Neospora caninum in cattle: experimental infection with oocysts can result in exogenous transplacental infection, but not endogenous transplacental infection in the subsequent pregnancy
    C M McCann
    Veterinary Parasitology, Liverpool School of Tropical Medicine, Faculty of Veterinary Science, University of Liverpool, Pembroke Place, Liverpool L3 5QA, UK
    Int J Parasitol 37:1631-9
    ..This confirms previous results with experimental tachyzoite challenge and suggests that post-natal infection does not lead to persisting infections which can recrudesce in pregnancy...
  31. Adaptation of a commercial ELISA for the detection of antibodies against Neospora caninum in bovine milk
    G Schares
    Institute of Epidemiology, Federal Research Center for Virus, Diseases of Animals, Seestrasse 55, D 16868 Wusterhausen, Germany
    Vet Parasitol 120:55-63
    ..The milk-based commercial ELISA classified more aborting dams as positive than the serum-based ELISA with this cut-off. The milk ELISA may be a valuable tool to assess the herd status with regard to abortion caused by N. caninum...
  32. Prevalence of Neospora caninum infection in dairy cows and its consequences for reproductive management
    Nuno Canada
    CECA, Center for the Study of Animal Sciences, Abel Salazar Institute of Biomedical Sciences, University of Porto, Campus Agrário de Vairão, R Padre Armando Quintas, 4485 661 Vairão, Portugal
    Theriogenology 62:1229-35
    ..In the context of embryo transfers, the importance of selecting Neospora-free embryo recipients is discussed, as well as the pertinence of assessing the Neospora status of traded and imported cattle...
  33. An outbreak of abortion in a dairy herd associated with Neospora caninum and bovine pestivirus infection
    H E Quinn
    Department of Cell and Molecular Biology, University of Technology, Sydney, Westbourne Street, Gore Hill, New South Wales 2065
    Aust Vet J 82:99-101
  34. p38-avidity-ELISA: examination of herds experiencing epidemic or endemic Neospora caninum-associated bovine abortion
    G Schares
    Federal Research Centre for Virus Diseases of Animals, Institute for Epidemiological Diagnostics and Institute for Epidemiology, Seestrasse 55, D 16868, Wusterhausen, Germany
    Vet Parasitol 106:293-305
    ..e. the severity of the abortion epidemic). A possible explanation for this observation is that herds experiencing heavy abortion are sampled earlier after the onset of the epidemic than others that have a less severe abortion storm...
  35. Neospora abortions in dairy cattle: diagnosis, mode of transmission and control
    C A Hall
    Novartis Animal Health Australasia Pty Ltd, Yarrandoo R and D Centre, 245 Western Road, Kemps Creek, NSW 2178, Australia
    Vet Parasitol 128:231-41
    ..Vertical transmission of infection was the predominant mode of infection and hence control efforts aimed at selectively culling seropositive animals from the herd were highly successful in reducing the level of infection...
  36. Effect of Neospora caninum-serostatus on culling, reproductive performance and milk production in Dutch dairy herds with and without a history of Neospora caninum-associated abortion epidemics
    Chris J M Bartels
    Animal Health Services Ltd, P O Box 9, 7400 AA, Deventer, The Netherlands
    Prev Vet Med 77:186-98
    ..72kgmilk/day (95% CI: 0.15-1.03) and 0.59kgmilk/day (95% CI: 0.13-1.30), less during the first 100 days of lactation in the first year after the abortion epidemic compared with N serostatus...
  37. Seroprevalence of Neospora caninum antibodies in cattle and water buffaloes in India
    K S Sandhu
    Department of Epidemiology and Preventive Veterinary Medicine, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana 141004, India
    J Parasitol 93:1374-7
    ..Thus, antibodies to N. caninum were demonstrated in cattle sera by 2 serologic methods. To our knowledge this is the first report of N. caninum infection in cattle and buffaloes in India...
  38. Determination of an optimized cut-off value for the Neospora agglutination test for serodiagnosis in cattle
    N Canada
    CECA, Center for the Study of Animal Sciences, University of Porto, Campus Agrário de Vairão, Rua do Monte, Crasto, 4485 661 Vairão, Portugal
    Vet Parasitol 121:225-31
    ..e. titers of 1:40 and higher showed a complex pattern of bands, while titers lower than 1:40 did not precipitate any bands. These results indicate that 1:40 was an optimized NAT cut-off for serodiagnosis in cattle...
  39. Survey of Neospora caninum infection by nested PCR in aborted fetuses from dairy farms in Aguascalientes, Mexico
    L Medina
    Instituto Tecnológico Agropecuario de Aguascalientes, Ags, Mexico
    Vet Parasitol 136:187-91
    ..05). The frequency of N. caninum positive cases observed could be considered to be higher than other areas of Mexico and other countries...
  40. Fetal infection with Neospora caninum in dairy and beef cattle in Belgium
    F De Meerschman
    Laboratory of Parasitology and Parasitic Diseases, Faculty of Veterinary Medicine, Liège, Belgium
    Theriogenology 58:933-45
    ..001) but no such significant relationships could be demonstrated in dairy fetuses. The study indicated that N. caninum must be considered as an important cause of bovine abortion in Belgium...
  41. Evaluation by different diagnostic techniques of bovine abortion associated with Neospora caninum in Spain
    J Pereira-Bueno
    Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24007 León, Spain
    Vet Parasitol 111:143-52
    ..05). This study confirms the importance of N. caninum as a cause of abortion in Spain and underlines the need to use different diagnostic techniques to increase the chance to detect the infection in aborted foetuses...
  42. The use of PCR to detect Neospora caninum DNA in the blood of naturally infected cows
    C M Okeoma
    Institute of Veterinary Animal and Biological Sciences, Massey University, Palmerston North, New Zealand
    Vet Parasitol 122:307-15
    ..The BLAST test results revealed that Neospora caninum DNA was present in these blood samples indicating that polymerase chain reaction can be used in the detection of N. caninum DNA in the blood of sero-positive cows...
  43. Artificial insemination of cows with semen in vitro contaminated with Neospora caninum tachyzoites failed to induce neosporosis
    Nuno Canada
    ICBAS, Abel Salazar Institute for Biomedical Sciences, University of Porto, Largo Abel Salazar 2, Porto, Portugal
    Vet Parasitol 139:109-14
    ..All of the cows from group B had negative DAT titers (< or =1:20) in all of the samples. These results suggest that transmission of neosporosis by artificial insemination with frozen-thawed semen is an unlikely event...
  44. First demonstration of protective immunity against foetopathy in cattle with latent Neospora caninum infection
    D J L Williams
    Veterinary Parasitology, Liverpool School of Tropical Medicine Faculty of Veterinary Science, University of Liverpool, Pembroke Place, Liverpool L3 5QA, UK
    Int J Parasitol 33:1059-65
    ..This implies that a subtle form of concomitant immunity exists in chronically infected cattle and has important implications for vaccine development...
  45. [First documentation of a neospora-induced "abortion storm" (exogenous transplacental transmission of neospora caninum) in a Swiss dairy farm]
    H Sager
    Institut de Parasitologie, l'Université de Berne
    Schweiz Arch Tierheilkd 147:113-20
    ..This is the first documented record of such an event in Switzerland...
  46. A long-term study of Neospora caninum infection in a Swedish dairy herd
    Susanne Stenlund
    Department of Obstetrics and Gynaecology, Centre of Reproductive Biology, Uppsala, Sweden
    Acta Vet Scand 44:63-71
    ..During the same time, as judged by the avidity data, a large proportion of the animals shifted from being recently to being chronically infected. The source of the external infection in the herd could not be identified...
  47. Neospora caninum immunoblotting improves serodiagnosis of bovine neosporosis
    Daniela Staubli
    Institute of Parasitology, Vetsuisse Faculty, University of Bern, Laenggass-Strasse 122, Bern CH-3012, Switzerland
    Parasitol Res 99:648-58
    ..Altogether, our findings demonstrate that N. caninum immunoblotting is a very sensitive and specific complementary tool to improve the serology for N. caninum infections in cattle...
  48. Diagnosis and seroepidemiology of Neospora caninum-associated bovine abortion
    Mark Jenkins
    Agricultural Research Service, USDA, BARC East, Beltsville, MD 20705, USA
    Int J Parasitol 32:631-6
    ..caninum. Seroepidemiological approaches allow one to assess an abortion problem at a herd level and when used in conjunction with certain statistical methods are able to confirm a suspected N. caninum-associated abortion...
  49. A longitudinal study of Neospora caninum infection on a dairy farm in New Zealand
    D U Pfeiffer
    Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
    Prev Vet Med 54:11-24
    ..Infection might have been present endemically within this herd prior to the epidemic, but in 1997 an additional factor appeared to have triggered the outbreak...