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Resumen
Previous studies have shown the presence of bovine leukemia virus (BLV) in colostrum and milk of naturally infected cows. The relationship between virus or provirus and specific antibodies in these secretions is particular to each infected cow and will probably determine whether the consumption of colostrum or milk from these naturally infected dams provides an infective or a protective effect in recipient calves. Our recent findings suggest that this [ver mas...]
dc.contributor.authorLomonaco, Marina
dc.contributor.authorSowul, Mariana
dc.contributor.authorGutierrez, Gerónimo
dc.contributor.authorMalacari, Darío Amilcar
dc.contributor.authorAlvarez, Irene
dc.contributor.authorPorta, Natalia Gabriela
dc.contributor.authorZabal, Osvaldo Alfredo
dc.contributor.authorTrono, Karina Gabriela
dc.date.accessioned2021-01-15T13:11:01Z
dc.date.available2021-01-15T13:11:01Z
dc.date.issued2020-07
dc.identifier.issn1525-3198
dc.identifier.otherhttps://doi.org/10.3168/jds.2019-17854
dc.identifier.urihttp://hdl.handle.net/20.500.12123/8601
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0022030220303490
dc.description.abstractPrevious studies have shown the presence of bovine leukemia virus (BLV) in colostrum and milk of naturally infected cows. The relationship between virus or provirus and specific antibodies in these secretions is particular to each infected cow and will probably determine whether the consumption of colostrum or milk from these naturally infected dams provides an infective or a protective effect in recipient calves. Our recent findings suggest that this issue is a key point in BLV transmission in very young calves. Based on this, the aim of the present study was to determine the effect of the spray-drying treatment of colostrum on BLV infectivity. The treatment was done on scale-down conditions, using fresh colostrum from BLV-negative cows spiked with infective BLV. Residual infectivity was tested in susceptible lambs. Lambs inoculated with colostrum spiked with BLV-infected cells or cell-free BLV showed evidence of infection 60 d after inoculation, whereas none of the lambs inoculated with spray-dried colostrum showed evidence of infection 60 d after inoculation. These results provide direct evidence that the experimental spray-drying process used in this study was effective in inactivating infectious BLV in colostrum. These findings suggest that the risk for BLV transmission could be reduced if milk and colostrum were treated by spray-drying prior to consumption in dairy facilities. The effect of spray-drying on the functional properties and stability of the antibodies present in colostrum under long-term storage should be further investigated.es_AR
dc.formatapplication/pdfeng
dc.language.isoeng
dc.publisherElseviereng
dc.relationinfo:eu-repograntAgreement/INTA/PNSA-1115054/AR./Enfermedades parasitarias, infecciosas y tóxico metabólicas que afectan la productividad de los bóvidos para producción de carne y leche.es_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceJournal of dairy science 103 (7) : 6504-6510. (Julio 2020)es_AR
dc.subjectBovine Leukaemia Viruseng
dc.subjectVirus Leucemia Bovinaes_AR
dc.subjectColostrumeng
dc.subjectCalostroes_AR
dc.subjectSpray Dryingeng
dc.subjectSecado por Pulverizaciónes_AR
dc.titleEfficacy of the spray-drying treatment to inactivate the bovine leukemia virus in bovine colostrumes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.origenInstituto de Virologíaes_AR
dc.description.filFil: Lomonaco, Marina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Sowul, Mariana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Gutierrez, Gerónimo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Malacari, Darío Amilcar. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Alvarez, Irene. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Porta, Natalia Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Zabal, Osvaldo Alfredo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Trono, Karina Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentinaes_AR
dc.description.filFil: Sowul, Mariana. Servicio Nacional de Sanidad y Calidad Agroalimentaria (SENASA); Argentina
dc.description.filFil: Alvarez, Irene. Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET); Argentina
dc.description.filFil: Porta, Natalia Gabriela. Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET); Argentina
dc.description.filFil: Trono, Karina Gabriela. Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET); Argentina
dc.subtypecientifico


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