PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES

ABSTRACT Bovine leukemia virus (BLV) is a retroviral agent that primarily affects dairy cattle. Colostrum is the main source of immunoglobulins for calves; however, it is also a vehicle for the vertical transmission of BLV. The aim of this work was to determine the presence of BLV in colostrum and i...

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Autores principales:	Úsuga-Monroy,Cristina, Díaz,Francisco J., Echeverri-Zuluaga,Julián, González-Herrera,Luis Gabriel, López-Herrera,Albeiro
Lenguaje:	English
Publicado:	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias 2021
Materias:	phylogeny viral infection vertical transmission
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902021000200167
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id	oai:scielo:S0719-38902021000200167
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spelling	oai:scielo:S0719-389020210002001672021-10-05PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVESÚsuga-Monroy,CristinaDíaz,Francisco J.Echeverri-Zuluaga,JuliánGonzález-Herrera,Luis GabrielLópez-Herrera,Albeiro phylogeny viral infection vertical transmission ABSTRACT Bovine leukemia virus (BLV) is a retroviral agent that primarily affects dairy cattle. Colostrum is the main source of immunoglobulins for calves; however, it is also a vehicle for the vertical transmission of BLV. The aim of this work was to determine the presence of BLV in colostrum and its potential to infect newborn calves. Seven mothers and their seven daughter calves were evaluated. Blood, colostrum, and milk samples were taken. An ELISA was performed to detect BLV in blood, colostrum and milk serums. Furthermore, a PCR test (env gene) was used for BLV detection in blood and colostrum. An identity analysis was used (phylogeny) to verify the origin of the sequences obtained from the DNA of mothers, calves, and colostrum. Six of the seven cows were positive for BLV by ELISA, while five of them were positive by PCR. None of the calves was positive by PCR at birth. However, the BLV provirus was found in two calves on day 15 and in one calf on day 30. The identity of the sequences was confirmed as BLV. Colostrum and milk are vehicles for the vertical transmission of BLV, which explains that three of the seven calves evaluated showed BLV infection during the early postpartum period.info:eu-repo/semantics/openAccessUniversidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias VeterinariasChilean journal of agricultural & animal sciences v.37 n.2 20212021-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902021000200167en10.29393/chjaas37-19pbca50019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	phylogeny viral infection vertical transmission
spellingShingle	phylogeny viral infection vertical transmission Úsuga-Monroy,Cristina Díaz,Francisco J. Echeverri-Zuluaga,Julián González-Herrera,Luis Gabriel López-Herrera,Albeiro PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES
description	ABSTRACT Bovine leukemia virus (BLV) is a retroviral agent that primarily affects dairy cattle. Colostrum is the main source of immunoglobulins for calves; however, it is also a vehicle for the vertical transmission of BLV. The aim of this work was to determine the presence of BLV in colostrum and its potential to infect newborn calves. Seven mothers and their seven daughter calves were evaluated. Blood, colostrum, and milk samples were taken. An ELISA was performed to detect BLV in blood, colostrum and milk serums. Furthermore, a PCR test (env gene) was used for BLV detection in blood and colostrum. An identity analysis was used (phylogeny) to verify the origin of the sequences obtained from the DNA of mothers, calves, and colostrum. Six of the seven cows were positive for BLV by ELISA, while five of them were positive by PCR. None of the calves was positive by PCR at birth. However, the BLV provirus was found in two calves on day 15 and in one calf on day 30. The identity of the sequences was confirmed as BLV. Colostrum and milk are vehicles for the vertical transmission of BLV, which explains that three of the seven calves evaluated showed BLV infection during the early postpartum period.
author	Úsuga-Monroy,Cristina Díaz,Francisco J. Echeverri-Zuluaga,Julián González-Herrera,Luis Gabriel López-Herrera,Albeiro
author_facet	Úsuga-Monroy,Cristina Díaz,Francisco J. Echeverri-Zuluaga,Julián González-Herrera,Luis Gabriel López-Herrera,Albeiro
author_sort	Úsuga-Monroy,Cristina
title	PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES
title_short	PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES
title_full	PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES
title_fullStr	PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES
title_full_unstemmed	PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES
title_sort	presence of bovine leukemia virus in colostrum samples and its potential to infect newborn calves
publisher	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902021000200167
work_keys_str_mv	AT usugamonroycristina presenceofbovineleukemiavirusincolostrumsamplesanditspotentialtoinfectnewborncalves AT diazfranciscoj presenceofbovineleukemiavirusincolostrumsamplesanditspotentialtoinfectnewborncalves AT echeverrizuluagajulian presenceofbovineleukemiavirusincolostrumsamplesanditspotentialtoinfectnewborncalves AT gonzalezherreraluisgabriel presenceofbovineleukemiavirusincolostrumsamplesanditspotentialtoinfectnewborncalves AT lopezherreraalbeiro presenceofbovineleukemiavirusincolostrumsamplesanditspotentialtoinfectnewborncalves
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PRESENCE OF BOVINE LEUKEMIA VIRUS IN COLOSTRUM SAMPLES AND ITS POTENTIAL TO INFECT NEWBORN CALVES

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