Fate of Neospora-seropositive animals: An opinion

Neospora caninum is an abortive protozoon in cattle, which causes severe economic losses worldwide. Chronically infected cattle however develop immune responses protecting against further Neospora induced abortions. Controversy about losses other than abortion in Neospora-infected cattle still exist...

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Autor principal:	MOORE,DADIN P
Lenguaje:	English
Publicado:	Sociedad Chilena de Parasitología 2005
Materias:	Bovine Immunology
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-77122005000200018
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spelling	oai:scielo:S0717-771220050002000182006-01-23Fate of Neospora-seropositive animals: An opinionMOORE,DADIN P Bovine Immunology Neospora caninum is an abortive protozoon in cattle, which causes severe economic losses worldwide. Chronically infected cattle however develop immune responses protecting against further Neospora induced abortions. Controversy about losses other than abortion in Neospora-infected cattle still exists. Although, culling of seropositive animals has been recommended as a strategy for reducing economic losses due to N. caninum, there is no guarantee of escaping postnatal infection and abortion storms by having a "Neospora-sterile herd". An inactivated vaccine has been demonstrated to reduce abortion rates. Antibodies generated by natural infection can not presently be differentiated from those induced by vaccination; however, since maternal antibodies disappear by 6 months in calves born to vaccinated heifers, a test-and cull strategy could be performed in replacement heifers before breeding and vaccination. This review article discusses control strategies for Neospora-infection in cattle, and provides suggestions for further researchinfo:eu-repo/semantics/openAccessSociedad Chilena de ParasitologíaParasitología latinoamericana v.60 n.3-4 20052005-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-77122005000200018en10.4067/S0717-77122005000200018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bovine Immunology
spellingShingle	Bovine Immunology MOORE,DADIN P Fate of Neospora-seropositive animals: An opinion
description	Neospora caninum is an abortive protozoon in cattle, which causes severe economic losses worldwide. Chronically infected cattle however develop immune responses protecting against further Neospora induced abortions. Controversy about losses other than abortion in Neospora-infected cattle still exists. Although, culling of seropositive animals has been recommended as a strategy for reducing economic losses due to N. caninum, there is no guarantee of escaping postnatal infection and abortion storms by having a "Neospora-sterile herd". An inactivated vaccine has been demonstrated to reduce abortion rates. Antibodies generated by natural infection can not presently be differentiated from those induced by vaccination; however, since maternal antibodies disappear by 6 months in calves born to vaccinated heifers, a test-and cull strategy could be performed in replacement heifers before breeding and vaccination. This review article discusses control strategies for Neospora-infection in cattle, and provides suggestions for further research
author	MOORE,DADIN P
author_facet	MOORE,DADIN P
author_sort	MOORE,DADIN P
title	Fate of Neospora-seropositive animals: An opinion
title_short	Fate of Neospora-seropositive animals: An opinion
title_full	Fate of Neospora-seropositive animals: An opinion
title_fullStr	Fate of Neospora-seropositive animals: An opinion
title_full_unstemmed	Fate of Neospora-seropositive animals: An opinion
title_sort	fate of neospora-seropositive animals: an opinion
publisher	Sociedad Chilena de Parasitología
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-77122005000200018
work_keys_str_mv	AT mooredadinp fateofneosporaseropositiveanimalsanopinion
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Fate of Neospora-seropositive animals: An opinion

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