PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA

ABSTRACT The objective of this study was to evaluate the population of Brahman cattle from Costa Rica. Pedigree analysis of 98,749 animals was used to estimate the following parameters: pedigree integrity, as a proportion of known ancestors; the number of complete generations, maximum generations tr...

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Autores principales:	Vásquez-Loaiza,Marilyn, Cruz-Méndez,Argerie, Castro-Vásquez,Ruth, Cascante-Segura,Susana, Camacho-Sandoval,Jorge, Domínguez-Viveros,Joel
Lenguaje:	English
Publicado:	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias 2021
Materias:	inbreeding generation interval effective population size ancestors zebu cattle
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902021000200177
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spelling	oai:scielo:S0719-389020210002001772021-10-05PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICAVásquez-Loaiza,MarilynCruz-Méndez,ArgerieCastro-Vásquez,RuthCascante-Segura,SusanaCamacho-Sandoval,JorgeDomínguez-Viveros,Joel inbreeding generation interval effective population size ancestors zebu cattle ABSTRACT The objective of this study was to evaluate the population of Brahman cattle from Costa Rica. Pedigree analysis of 98,749 animals was used to estimate the following parameters: pedigree integrity, as a proportion of known ancestors; the number of complete generations, maximum generations traced, and equivalent complete generations; inbreeding coefficient (F); generation interval (GI) across four selection paths; additive genetic relationship (AGR); effective number of founders (fe) and ancestors (fa); and effective population size (Ne). The analysis was carried out using the ENDOG software. The maximum proportions of unknown parents, grandparents, and great-grandparents were 14.1%, 38.9%, and 61.2%, respectively. Average F for the whole population was 0.86, while 27.4% of the population was inbred, with an average F of 3.1%. The inbred population increased through the time, while F decreased. The average AGR was 0.64, with maximum values of 4.1 and positive trends. The fe and fa were 617.8 and 172.0, respectively. The Ne indicated increases of F, with values lower than 1%. The GI fluctuated from 6.4 to 7.4, with an average of 6.85 years. These results summarize previous breeding practices and represent useful information for designing breeding programs by anticipating the relationship between the selection response and increases of inbreeding.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=S0719-38902021000200177en10.29393/chjaas37-20pamj60020
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	inbreeding generation interval effective population size ancestors zebu cattle
spellingShingle	inbreeding generation interval effective population size ancestors zebu cattle Vásquez-Loaiza,Marilyn Cruz-Méndez,Argerie Castro-Vásquez,Ruth Cascante-Segura,Susana Camacho-Sandoval,Jorge Domínguez-Viveros,Joel PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA
description	ABSTRACT The objective of this study was to evaluate the population of Brahman cattle from Costa Rica. Pedigree analysis of 98,749 animals was used to estimate the following parameters: pedigree integrity, as a proportion of known ancestors; the number of complete generations, maximum generations traced, and equivalent complete generations; inbreeding coefficient (F); generation interval (GI) across four selection paths; additive genetic relationship (AGR); effective number of founders (fe) and ancestors (fa); and effective population size (Ne). The analysis was carried out using the ENDOG software. The maximum proportions of unknown parents, grandparents, and great-grandparents were 14.1%, 38.9%, and 61.2%, respectively. Average F for the whole population was 0.86, while 27.4% of the population was inbred, with an average F of 3.1%. The inbred population increased through the time, while F decreased. The average AGR was 0.64, with maximum values of 4.1 and positive trends. The fe and fa were 617.8 and 172.0, respectively. The Ne indicated increases of F, with values lower than 1%. The GI fluctuated from 6.4 to 7.4, with an average of 6.85 years. These results summarize previous breeding practices and represent useful information for designing breeding programs by anticipating the relationship between the selection response and increases of inbreeding.
author	Vásquez-Loaiza,Marilyn Cruz-Méndez,Argerie Castro-Vásquez,Ruth Cascante-Segura,Susana Camacho-Sandoval,Jorge Domínguez-Viveros,Joel
author_facet	Vásquez-Loaiza,Marilyn Cruz-Méndez,Argerie Castro-Vásquez,Ruth Cascante-Segura,Susana Camacho-Sandoval,Jorge Domínguez-Viveros,Joel
author_sort	Vásquez-Loaiza,Marilyn
title	PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA
title_short	PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA
title_full	PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA
title_fullStr	PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA
title_full_unstemmed	PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA
title_sort	pedigree analysis and population structure of brahman cattle from costa rica
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=S0719-38902021000200177
work_keys_str_mv	AT vasquezloaizamarilyn pedigreeanalysisandpopulationstructureofbrahmancattlefromcostarica AT cruzmendezargerie pedigreeanalysisandpopulationstructureofbrahmancattlefromcostarica AT castrovasquezruth pedigreeanalysisandpopulationstructureofbrahmancattlefromcostarica AT cascantesegurasusana pedigreeanalysisandpopulationstructureofbrahmancattlefromcostarica AT camachosandovaljorge pedigreeanalysisandpopulationstructureofbrahmancattlefromcostarica AT dominguezviverosjoel pedigreeanalysisandpopulationstructureofbrahmancattlefromcostarica
_version_	1718324184144150528

PEDIGREE ANALYSIS AND POPULATION STRUCTURE OF BRAHMAN CATTLE FROM COSTA RICA

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