Association between Neospora caninum seropositivity and perinatal mortality in dairy heifers at first calving

The Veterinary Record
J S BrickellD C Wathes

Abstract

Associations between Neospora caninum infection and the reproductive performance of dairy heifers in their first and second pregnancy on 18 UK farms were examined. Six-month-old heifer calves were tested for N caninum-specific antibodies with a commercial ELISA, and were then monitored until their second calving. Random-effects regression analyses were performed on the data, using serological status as the explanatory variable. Of 460 heifers tested, 7.2 per cent were seropositive. Seropositive heifers were more likely to suffer gestational loss (late embryonic/early fetal loss and abortion) than seronegative heifers during their first (odds ratio [OR] 5.3, P<0.01) and second (OR 6.0, P<0.001) pregnancy. Seropositive heifers were also four times more likely to experience perinatal mortality (calf born dead or dying within 24 hours of parturition) at first (OR 3.9, P<0.01) and second (OR 4.5, P<0.1) calving. No significant association between seropositivity and the fertility parameters (age at first breeding and calving, days from calving to first service and conception, services per conception and calving interval) or conception failure was found. The results suggest that N caninum infection before pregnancy is a significant co...Continue Reading

References

Mar 29, 1997·The Veterinary Record·D J WilliamsA J Trees
Nov 27, 1999·International Journal for Parasitology·A J TreesJ M Wastling
Dec 23, 1999·International Journal for Parasitology·H C DavisonA J Trees
Jun 22, 2001·Journal of Dairy Science·M C Lucy
Dec 16, 2003·Journal of Dairy Science·J M Johanson, P J Berger
Jul 1, 2004·Theriogenology·F López-GatiusS Almería
Jul 24, 2004·Animal Reproduction Science·J E P SantosK N Galvão
Feb 11, 2005·Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health·F López-GatiusS Almería
Aug 16, 2005·Veterinary Parasitology·Z Garcia-VazquezG Mapes-Sanchez
Oct 15, 2005·Trends in Parasitology·Alexander J Trees, Diana J L Williams
Dec 6, 2005·The Journal of Veterinary Medical Science·Masahiro KoiwaiItsuro Yamane
Mar 21, 2007·Journal of Dairy Science·J E LombardL P Garber
Apr 13, 2007·Clinical Microbiology Reviews·J P DubeyL M Ortega-Mora
May 27, 2008·Theriogenology·M Daniel Givens, M S D Marley
Nov 20, 2008·Tropical Animal Health and Production·Zeferino Garcia-VazquezCarlos Cruz-Vazquez
Feb 14, 2009·Veterinary Parasitology·D P MooreC M Campero
Apr 1, 2008·Animal : an International Journal of Animal Bioscience·J F MeeA R Cromie
Aug 1, 2008·Animal : an International Journal of Animal Bioscience·D C WathesZ Cheng

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Citations

Mar 8, 2014·Experimental Parasitology·Thierry Monney, Andrew Hemphill
Apr 5, 2014·Animal : an International Journal of Animal Bioscience·D C WathesJ S Cooke
Jun 8, 2011·Preventive Veterinary Medicine·Marta González-WarletaMercedes Mezo
Apr 7, 2015·Research in Veterinary Science·Sonia Almería, Fernando López-Gatius
Jun 28, 2011·Veterinary Parasitology·J P Dubey, G Schares
Dec 19, 2012·International Journal for Parasitology·Michael P ReichelJohn T Ellis
Jun 23, 2019·Tropical Animal Health and Production·Claudia Mello RibeiroVera Afreixo

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