A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms

Autores
Vega, Celina Guadalupe; Bok, Marina; Ebinger, Maren; Rocha, Lucia Alejandra; Rivolta, Alejandra Antonella; González Thomas, Valeria; Muntadas, Pilar; D´Aloia, Ricardo; Pinto, Verónica; Parreño, Gladys Viviana; Wigdorovitz, Andrés
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Neonatal diarrhea remains one of the main causes of morbi-mortality in dairy calves under artificial rearing. It is often caused by infectious agents of viral, bacterial, or parasitic origin. Cows vaccination and colostrum intake by calves during the first 6 h of life are critical strategies to prevent severe diarrhea but these are still insufficient. Here we report the field evaluation of a product based on IgY antibodies against group A rotavirus (RVA), coronavirus (CoV), enterotoxigenic Escherichia coli, and Salmonella sp. This product, named IgY DNT, has been designed as a complementary passive immunization strategy to prevent neonatal calf diarrhea. The quality of the product depends on the titers of specific IgY antibodies to each antigen evaluated by ELISA. In the case of the viral antigens, ELISA antibody (Ab) titers are correlated with protection against infection in calves experimentally challenged with RVA and CoV (Bok M, et al., Passive immunity to control bovine coronavirus diarrhea in a dairy herd in Argentina, 2017), (Vega C, et al., Vet Immunol Immunopathol, 142:156-69, 2011), (Vega C, et al., Res Vet Sci, 103:1-10, 2015). To evaluate the efficiency in dairy farms, thirty newborn Holstein calves were randomly assigned to IgY DNT or control groups and treatment initiated after colostrum intake and gut closure. Calves in the IgY DNT group received 20 g of the oral passive treatment in 2 L of milk twice a day during the first 2 weeks of life. Animals were followed until 3 weeks of age and diarrhea due to natural exposure to infectious agents was recorded during all the experimental time. Results: Results demonstrate that the oral administration of IgY DNT during the first 2 weeks of life to newborn calves caused a delay in diarrhea onset and significantly reduced its severity and duration compared with untreated calves. Animals treated with IgY DNT showed a trend towards a delay in RVA infection with significantly shorter duration and virus shedding compared to control calves. Conclusions: This indicates that IgY DNT is an effective product to complement current preventive strategies against neonatal calf diarrhea in dairy farms. Furthermore, to our knowledge, this is the only biological product available for the prevention of virus-associated neonatal calf diarrhea.
Fil: Vega, Celina Guadalupe. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Bok, Marina. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Ebinger, Maren. No especifíca;
Fil: Rocha, Lucia Alejandra. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Rivolta, Alejandra Antonella. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: González Thomas, Valeria. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina
Fil: Muntadas, Pilar. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina
Fil: D´Aloia, Ricardo. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina
Fil: Pinto, Verónica. No especifíca;
Fil: Parreño, Gladys Viviana. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Wigdorovitz, Andrés. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Materia
IGY ANTIBODY
INFECTIOUS NEONATAL CALF DIARRHEA
PASSIVE TREATMENT
ROTAVIRUS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/145962
Acceder
id CONICETDig_dd52b11ac65a219ed494663e1826043c
oai_identifier_str oai:ri.conicet.gov.ar:11336/145962
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farmsVega, Celina GuadalupeBok, MarinaEbinger, MarenRocha, Lucia AlejandraRivolta, Alejandra AntonellaGonzález Thomas, ValeriaMuntadas, PilarD´Aloia, RicardoPinto, VerónicaParreño, Gladys VivianaWigdorovitz, AndrésIGY ANTIBODYINFECTIOUS NEONATAL CALF DIARRHEAPASSIVE TREATMENTROTAVIRUShttps://purl.org/becyt/ford/4.4https://purl.org/becyt/ford/4Background: Neonatal diarrhea remains one of the main causes of morbi-mortality in dairy calves under artificial rearing. It is often caused by infectious agents of viral, bacterial, or parasitic origin. Cows vaccination and colostrum intake by calves during the first 6 h of life are critical strategies to prevent severe diarrhea but these are still insufficient. Here we report the field evaluation of a product based on IgY antibodies against group A rotavirus (RVA), coronavirus (CoV), enterotoxigenic Escherichia coli, and Salmonella sp. This product, named IgY DNT, has been designed as a complementary passive immunization strategy to prevent neonatal calf diarrhea. The quality of the product depends on the titers of specific IgY antibodies to each antigen evaluated by ELISA. In the case of the viral antigens, ELISA antibody (Ab) titers are correlated with protection against infection in calves experimentally challenged with RVA and CoV (Bok M, et al., Passive immunity to control bovine coronavirus diarrhea in a dairy herd in Argentina, 2017), (Vega C, et al., Vet Immunol Immunopathol, 142:156-69, 2011), (Vega C, et al., Res Vet Sci, 103:1-10, 2015). To evaluate the efficiency in dairy farms, thirty newborn Holstein calves were randomly assigned to IgY DNT or control groups and treatment initiated after colostrum intake and gut closure. Calves in the IgY DNT group received 20 g of the oral passive treatment in 2 L of milk twice a day during the first 2 weeks of life. Animals were followed until 3 weeks of age and diarrhea due to natural exposure to infectious agents was recorded during all the experimental time. Results: Results demonstrate that the oral administration of IgY DNT during the first 2 weeks of life to newborn calves caused a delay in diarrhea onset and significantly reduced its severity and duration compared with untreated calves. Animals treated with IgY DNT showed a trend towards a delay in RVA infection with significantly shorter duration and virus shedding compared to control calves. Conclusions: This indicates that IgY DNT is an effective product to complement current preventive strategies against neonatal calf diarrhea in dairy farms. Furthermore, to our knowledge, this is the only biological product available for the prevention of virus-associated neonatal calf diarrhea.Fil: Vega, Celina Guadalupe. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; ArgentinaFil: Bok, Marina. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; ArgentinaFil: Ebinger, Maren. No especifíca;Fil: Rocha, Lucia Alejandra. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; ArgentinaFil: Rivolta, Alejandra Antonella. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; ArgentinaFil: González Thomas, Valeria. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; ArgentinaFil: Muntadas, Pilar. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; ArgentinaFil: D´Aloia, Ricardo. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; ArgentinaFil: Pinto, Verónica. No especifíca;Fil: Parreño, Gladys Viviana. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; ArgentinaFil: Wigdorovitz, Andrés. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; ArgentinaBioMed Central2020-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/145962Vega, Celina Guadalupe; Bok, Marina; Ebinger, Maren; Rocha, Lucia Alejandra; Rivolta, Alejandra Antonella; et al.; A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms; BioMed Central; BMC Veterinary Research; 16; 1; 7-2020; 1-91746-6148CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://bmcvetres.biomedcentral.com/articles/10.1186/s12917-020-02476-3info:eu-repo/semantics/altIdentifier/doi/10.1186/s12917-020-02476-3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:38:49Zoai:ri.conicet.gov.ar:11336/145962instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:38:49.374CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
title A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
spellingShingle A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
Vega, Celina Guadalupe
IGY ANTIBODY
INFECTIOUS NEONATAL CALF DIARRHEA
PASSIVE TREATMENT
ROTAVIRUS
title_short A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
title_full A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
title_fullStr A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
title_full_unstemmed A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
title_sort A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
dc.creator.none.fl_str_mv Vega, Celina Guadalupe
Bok, Marina
Ebinger, Maren
Rocha, Lucia Alejandra
Rivolta, Alejandra Antonella
González Thomas, Valeria
Muntadas, Pilar
D´Aloia, Ricardo
Pinto, Verónica
Parreño, Gladys Viviana
Wigdorovitz, Andrés
author Vega, Celina Guadalupe
author_facet Vega, Celina Guadalupe
Bok, Marina
Ebinger, Maren
Rocha, Lucia Alejandra
Rivolta, Alejandra Antonella
González Thomas, Valeria
Muntadas, Pilar
D´Aloia, Ricardo
Pinto, Verónica
Parreño, Gladys Viviana
Wigdorovitz, Andrés
author_role author
author2 Bok, Marina
Ebinger, Maren
Rocha, Lucia Alejandra
Rivolta, Alejandra Antonella
González Thomas, Valeria
Muntadas, Pilar
D´Aloia, Ricardo
Pinto, Verónica
Parreño, Gladys Viviana
Wigdorovitz, Andrés
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv IGY ANTIBODY
INFECTIOUS NEONATAL CALF DIARRHEA
PASSIVE TREATMENT
ROTAVIRUS
topic IGY ANTIBODY
INFECTIOUS NEONATAL CALF DIARRHEA
PASSIVE TREATMENT
ROTAVIRUS
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.4
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Background: Neonatal diarrhea remains one of the main causes of morbi-mortality in dairy calves under artificial rearing. It is often caused by infectious agents of viral, bacterial, or parasitic origin. Cows vaccination and colostrum intake by calves during the first 6 h of life are critical strategies to prevent severe diarrhea but these are still insufficient. Here we report the field evaluation of a product based on IgY antibodies against group A rotavirus (RVA), coronavirus (CoV), enterotoxigenic Escherichia coli, and Salmonella sp. This product, named IgY DNT, has been designed as a complementary passive immunization strategy to prevent neonatal calf diarrhea. The quality of the product depends on the titers of specific IgY antibodies to each antigen evaluated by ELISA. In the case of the viral antigens, ELISA antibody (Ab) titers are correlated with protection against infection in calves experimentally challenged with RVA and CoV (Bok M, et al., Passive immunity to control bovine coronavirus diarrhea in a dairy herd in Argentina, 2017), (Vega C, et al., Vet Immunol Immunopathol, 142:156-69, 2011), (Vega C, et al., Res Vet Sci, 103:1-10, 2015). To evaluate the efficiency in dairy farms, thirty newborn Holstein calves were randomly assigned to IgY DNT or control groups and treatment initiated after colostrum intake and gut closure. Calves in the IgY DNT group received 20 g of the oral passive treatment in 2 L of milk twice a day during the first 2 weeks of life. Animals were followed until 3 weeks of age and diarrhea due to natural exposure to infectious agents was recorded during all the experimental time. Results: Results demonstrate that the oral administration of IgY DNT during the first 2 weeks of life to newborn calves caused a delay in diarrhea onset and significantly reduced its severity and duration compared with untreated calves. Animals treated with IgY DNT showed a trend towards a delay in RVA infection with significantly shorter duration and virus shedding compared to control calves. Conclusions: This indicates that IgY DNT is an effective product to complement current preventive strategies against neonatal calf diarrhea in dairy farms. Furthermore, to our knowledge, this is the only biological product available for the prevention of virus-associated neonatal calf diarrhea.
Fil: Vega, Celina Guadalupe. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Bok, Marina. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Ebinger, Maren. No especifíca;
Fil: Rocha, Lucia Alejandra. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Rivolta, Alejandra Antonella. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: González Thomas, Valeria. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina
Fil: Muntadas, Pilar. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina
Fil: D´Aloia, Ricardo. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina
Fil: Pinto, Verónica. No especifíca;
Fil: Parreño, Gladys Viviana. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
Fil: Wigdorovitz, Andrés. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigacion En Ciencias Veterinarias y Agronomicas. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Pque. Centenario. Instituto de Virologia E Innovaciones Tecnologicas. Grupo Vinculado Incuinta Al Ivit.; Argentina
description Background: Neonatal diarrhea remains one of the main causes of morbi-mortality in dairy calves under artificial rearing. It is often caused by infectious agents of viral, bacterial, or parasitic origin. Cows vaccination and colostrum intake by calves during the first 6 h of life are critical strategies to prevent severe diarrhea but these are still insufficient. Here we report the field evaluation of a product based on IgY antibodies against group A rotavirus (RVA), coronavirus (CoV), enterotoxigenic Escherichia coli, and Salmonella sp. This product, named IgY DNT, has been designed as a complementary passive immunization strategy to prevent neonatal calf diarrhea. The quality of the product depends on the titers of specific IgY antibodies to each antigen evaluated by ELISA. In the case of the viral antigens, ELISA antibody (Ab) titers are correlated with protection against infection in calves experimentally challenged with RVA and CoV (Bok M, et al., Passive immunity to control bovine coronavirus diarrhea in a dairy herd in Argentina, 2017), (Vega C, et al., Vet Immunol Immunopathol, 142:156-69, 2011), (Vega C, et al., Res Vet Sci, 103:1-10, 2015). To evaluate the efficiency in dairy farms, thirty newborn Holstein calves were randomly assigned to IgY DNT or control groups and treatment initiated after colostrum intake and gut closure. Calves in the IgY DNT group received 20 g of the oral passive treatment in 2 L of milk twice a day during the first 2 weeks of life. Animals were followed until 3 weeks of age and diarrhea due to natural exposure to infectious agents was recorded during all the experimental time. Results: Results demonstrate that the oral administration of IgY DNT during the first 2 weeks of life to newborn calves caused a delay in diarrhea onset and significantly reduced its severity and duration compared with untreated calves. Animals treated with IgY DNT showed a trend towards a delay in RVA infection with significantly shorter duration and virus shedding compared to control calves. Conclusions: This indicates that IgY DNT is an effective product to complement current preventive strategies against neonatal calf diarrhea in dairy farms. Furthermore, to our knowledge, this is the only biological product available for the prevention of virus-associated neonatal calf diarrhea.
publishDate 2020
dc.date.none.fl_str_mv 2020-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/145962
Vega, Celina Guadalupe; Bok, Marina; Ebinger, Maren; Rocha, Lucia Alejandra; Rivolta, Alejandra Antonella; et al.; A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms; BioMed Central; BMC Veterinary Research; 16; 1; 7-2020; 1-9
1746-6148
CONICET Digital
CONICET
url http://hdl.handle.net/11336/145962
identifier_str_mv Vega, Celina Guadalupe; Bok, Marina; Ebinger, Maren; Rocha, Lucia Alejandra; Rivolta, Alejandra Antonella; et al.; A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms; BioMed Central; BMC Veterinary Research; 16; 1; 7-2020; 1-9
1746-6148
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://bmcvetres.biomedcentral.com/articles/10.1186/s12917-020-02476-3
info:eu-repo/semantics/altIdentifier/doi/10.1186/s12917-020-02476-3
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv BioMed Central
publisher.none.fl_str_mv BioMed Central
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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