GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK

ABSTRACT The Blanco Orejinegro (BON) breed is one of the seven Colombian Creole cattle breeds, which descends directly from Spanish cattle brought to the Americas during the conquest period. Currently, most of the Creole cattle breeds in Colombia are at risk of disappearing due to the use of foreign...

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Autores principales:	Ocampo Gallego,Ricardo, Ramírez Toro,Julián, Lopera Peña,John, Restrepo Castañeda,Gonzalo, Gallego Gil,Jaime
Lenguaje:	English
Publicado:	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias 2020
Materias:	Blanco Orejinegro BON Creole cattle effective population size genealogy generational interval inbreeding Colombia
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902020000100069
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spelling	oai:scielo:S0719-389020200001000692020-08-25GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANKOcampo Gallego,RicardoRamírez Toro,JuliánLopera Peña,JohnRestrepo Castañeda,GonzaloGallego Gil,Jaime Blanco Orejinegro BON Creole cattle effective population size genealogy generational interval inbreeding Colombia ABSTRACT The Blanco Orejinegro (BON) breed is one of the seven Colombian Creole cattle breeds, which descends directly from Spanish cattle brought to the Americas during the conquest period. Currently, most of the Creole cattle breeds in Colombia are at risk of disappearing due to the use of foreign breeds and absorbent crosses towards the Zebu and because of this, a germplasm bank was created to preserve them. The BON population kept in this germplasm bank has remained as a closed nucleous over time, and this can affect the conservation of its genetic variability. The objective of this study was to characterize the genetic structure of the BON population maintained in the germplasm bank using pedigree analysis. Genealogical information collected between 1980 and 2019 was used to estimate generational interval, level of pedigree integrity, inbreeding, and its evolution over time. The animals born between 2015 and 2019 were selected as the reference population to estimate the effective population size and parameters derived from the genetic origin probability. The average generation interval for the period studied was 4.58 years, and the general inbreeding was 1.32%. For the reference population, the inbreeding was 2.88%, and the effective population size was 123.75, while the effective number of founders and ancestors was 55 and 38, respectively. The results indicate that the population has a good genetic diversity and low levels of inbreeding. The use of a larger number of breeder males is recommended to conserve the population over time.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.36 n.1 20202020-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902020000100069en10.29393/chjaas36-4d30004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Blanco Orejinegro BON Creole cattle effective population size genealogy generational interval inbreeding Colombia
spellingShingle	Blanco Orejinegro BON Creole cattle effective population size genealogy generational interval inbreeding Colombia Ocampo Gallego,Ricardo Ramírez Toro,Julián Lopera Peña,John Restrepo Castañeda,Gonzalo Gallego Gil,Jaime GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK
description	ABSTRACT The Blanco Orejinegro (BON) breed is one of the seven Colombian Creole cattle breeds, which descends directly from Spanish cattle brought to the Americas during the conquest period. Currently, most of the Creole cattle breeds in Colombia are at risk of disappearing due to the use of foreign breeds and absorbent crosses towards the Zebu and because of this, a germplasm bank was created to preserve them. The BON population kept in this germplasm bank has remained as a closed nucleous over time, and this can affect the conservation of its genetic variability. The objective of this study was to characterize the genetic structure of the BON population maintained in the germplasm bank using pedigree analysis. Genealogical information collected between 1980 and 2019 was used to estimate generational interval, level of pedigree integrity, inbreeding, and its evolution over time. The animals born between 2015 and 2019 were selected as the reference population to estimate the effective population size and parameters derived from the genetic origin probability. The average generation interval for the period studied was 4.58 years, and the general inbreeding was 1.32%. For the reference population, the inbreeding was 2.88%, and the effective population size was 123.75, while the effective number of founders and ancestors was 55 and 38, respectively. The results indicate that the population has a good genetic diversity and low levels of inbreeding. The use of a larger number of breeder males is recommended to conserve the population over time.
author	Ocampo Gallego,Ricardo Ramírez Toro,Julián Lopera Peña,John Restrepo Castañeda,Gonzalo Gallego Gil,Jaime
author_facet	Ocampo Gallego,Ricardo Ramírez Toro,Julián Lopera Peña,John Restrepo Castañeda,Gonzalo Gallego Gil,Jaime
author_sort	Ocampo Gallego,Ricardo
title	GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK
title_short	GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK
title_full	GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK
title_fullStr	GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK
title_full_unstemmed	GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK
title_sort	genetic diversity assessed by pedigree analysis in the blanco orejinegro (bon) cattle breed population from the colombian germplasm bank
publisher	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902020000100069
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GENETIC DIVERSITY ASSESSED BY PEDIGREE ANALYSIS IN THE BLANCO OREJINEGRO (BON) CATTLE BREED POPULATION FROM THE COLOMBIAN GERMPLASM BANK

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