+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Management practices as risk factors for the presence of bulk milk antibodies to Salmonella, Neospora caninum and Leptospira interrogans serovar hardjo in Irish dairy herds



Management practices as risk factors for the presence of bulk milk antibodies to Salmonella, Neospora caninum and Leptospira interrogans serovar hardjo in Irish dairy herds



Animal 8(6): 1010-1019



A survey of management practices in 309 Irish dairy herds was used to identify risk factors for the presence of antibodies to Salmonella, Neospora caninum and Leptospira interrogans serovar hardjo in extensively managed unvaccinated dairy herds. A previous study documented a herd-level seroprevalence in bulk milk of 49%, 19% and 86% for Salmonella, Neospora caninum and leptospira interrogans serovar hardjo, respectively in the unvaccinated proportion of these 309 herds in 2009. Association analyses in the present study were carried out using multiple logistic regression models. Herds where cattle were purchased or introduced had a greater likelihood of being positive to leptospira interrogans serovar hardjo (P<0.01) and Salmonella (P<0.01). Larger herds had a greater likelihood of recording a positive bulk milk antibody result to leptospira interrogans serovar hardjo (P<0.05). Herds that practiced year round calving were more likely to be positive to Neospora caninum (P<0.05) compared to herds with a spring-calving season, with no difference in risk between herds that practiced split calving compared to herds that practiced spring calving. No association was found between presence of dogs on farms and prevalence of Neospora caninum possibly due to limited access of dogs to infected materials including afterbirths. The information from this study will assist in the design of suitable control programmes for the diseases under investigation in pasture-based livestock systems.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 054248383

Download citation: RISBibTeXText

PMID: 24661904

DOI: 10.1017/s175173111400055x


Related references

Temporal trends in bulk milk antibodies to Salmonella, Neospora caninum, and Leptospira interrogans serovar hardjo in Irish dairy herds. Preventive Veterinary Medicine 109(3-4): 343-348, 2013

Effect of exposure to Neospora caninum, Salmonella, and Leptospira interrogans serovar Hardjo on the economic performance of Irish dairy herds. Journal of Dairy Science 98(4): 2789-2800, 2015

Prevalence of antibodies to Leptospira interrogans serovar hardjo in bulk tank milk from unvaccinated irish dairy herds. Irish Veterinary Journal 57(4): 226-231, 2004

Prevalence of Leptospira interrogans serovar hardjo antibodies in milk in Belgian dairy herds. Veterinary Quarterly 13(2): 118-120, 1991

Presence of antigen and antibodies in serum and genital discharges of cows from dairy herds naturally infected with Leptospira interrogans serovar hardjo. Research in Veterinary Science 60(2): 163-167, 1996

Effect of Leptospira interrogans serovar hardjo infection on milk yield in endemically infected dairy herds. Veterinary Record 139(13): 319-320, 1996

Analysis of risk factors for infection of cattle herds with Leptospira interrogans serovar hardjo. Proceedings of a meeting Society for Veterinary Epidemiology and Preventive Medicine: 30-138, 1989

Reproductive performance of dairy herds infected with Leptospira interrogans serovar hardjo relative to the year of diagnosis. Veterinary Record 138(12): 272-276, 1996

Factors associated with variation in Neospora caninum bulk-milk S/P ratios in initially bulk-milk negative testing Dutch dairy herds. Preventive Veterinary Medicine 81(4): 265-273, 2007

Efficacy of vaccination of cattle with the Leptospira interrogans serovar hardjo type hardjoprajitno component of a pentavalent Leptospira bacterin against experimental challenge with Leptospira borgpetersenii serovar hardjo type hardjo-bovis. American Journal of Veterinary Research 73(5): 735-740, 2012

Production and characterization of monoclonal antibodies specific for Leptospira borgpetersenii serovar hardjo type hardjobovis and Leptospira interrogans serovar hardjo type hardjoprajitno. Canadian Journal of Veterinary Research 63(1): 62-68, 1999

Bayesian inference for within-herd prevalence of Leptospira interrogans serovar Hardjo using bulk milk antibody testing. Biostatistics 10(4): 719-728, 2009

Prevalence of antibodies to Leptospira hardjo in bulk tank milk from unvaccinated dairy herds in the south-west region of Poland. Berliner und Munchener Tierarztliche Wochenschrift 127(5-6): 247-250, 2015

The prevalence of Neospora caninum antibodies in bulk milk of dairy herds in the Czech Republic: a case report. Veterinarni Medicina 50(12): 549-552, 2005

Effect of vaccination against Leptospira interrogans serovar hardjo on milk production and fertility in dairy cattle. Veterinary Record 138(14): 334-335, 1996