Document Detail


Epidemiology and Impact of Neospora caninum Infection in Three Queensland Tropical Dairy Herds.
MedLine Citation:
PMID:  21736635     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
This study investigated the epidemiology of Neospora caninum in three tropical dairy herds in North Queensland, Australia. All animals in the herds were bled, and the sera were tested by ELISA for N. caninum antibodies. Herd records were examined, and the number of calves carried to term and the number of abortions which occurred over the lifetime of each animal were recorded to determine the abortion rate for each animal. Pedigrees were constructed for two of the herds to investigate whether vertical transmission was occurring. The seroprevalence of N. caninum ranged from 23% to 34%. The abortion rate in seropositive animals was significantly (p < 0.001) higher than in seronegative animals in all three herds (12-20.1% cf. 3.6-7%). Overall, the probability of a calf being seropositive was 3.5 times higher when the dam was also seropositive than when the dam was seronegative. Subsequent selective breeding employed by one herd reduced the N. caninum seroprevalence from 23% to 5% over a 9-year period. This study shows that N. caninum infection is prevalent in North Queensland dairy cattle, and both post-natal infection and vertical transmission are common.
Authors:
Jk Landmann; Aa Gunn; Pj O'Donoghue; Wp Tranter; Mr McGowan
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Publication Detail:
Type:  Journal Article     Date:  2010-11-23
Journal Detail:
Title:  Reproduction in domestic animals = Zuchthygiene     Volume:  46     ISSN:  1439-0531     ISO Abbreviation:  Reprod. Domest. Anim.     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-07-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9015668     Medline TA:  Reprod Domest Anim     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  734-7     Citation Subset:  IM    
Copyright Information:
© 2010 Blackwell Verlag GmbH.
Affiliation:
School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Qld, Australia School of Veterinary Science, The University of Queensland, Gatton Campus, Qld, Australia Tableland Veterinary Service, Malanda, Qld, Australia.
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