Genetic parameters and trends for litter size in Markhoz goats

Background: Prolificacy has a high economic value and is one of the most important reproduction traits in small ruminants such as Markhoz goats, which is an endangered breed. Objective: To estimate genetic, environmental and phenotypic trends, and genetic parameters for litter size (LS), as a prolif...

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Autores principales:	Ramin Abdoli, Pouya Zamani, Seyed Ziaeddin Mirhoseini, Navid Ghavi Hossein-Zadeh, Mohamad Almasi
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2019
Materias:	extinction risk genetic trend heritability phenotypic selection prolificacy Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/08475445c1094fecaafbf5ec6af920ee
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spelling	oai:doaj.org-article:08475445c1094fecaafbf5ec6af920ee2021-12-01T19:15:24ZGenetic parameters and trends for litter size in Markhoz goats2256-295810.17533/udea.rccp.v32n1a07https://doaj.org/article/08475445c1094fecaafbf5ec6af920ee2019-03-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/331788https://doaj.org/toc/2256-2958Background: Prolificacy has a high economic value and is one of the most important reproduction traits in small ruminants such as Markhoz goats, which is an endangered breed. Objective: To estimate genetic, environmental and phenotypic trends, and genetic parameters for litter size (LS), as a prolificacy trait of Markhoz goat does. Methods: The study was conducted using kidding records of 3,064 Markhoz does from 1992 to 2015. Genetic parameters were estimated with a logit link function using ASReml software, fitting a repeatability animal model, with birth year, kidding year, and kidding age as fixed effects, and direct additive genetic and permanent environmental effects as random effects. Genetic, phenotypic and environmental trends were estimated by using regression of breeding value, phenotypic value and environmental deviation averages on birth year, respectively. Results: Low and negligible heritability (0.002), repeatability (0.054) and coefficient of permanent environment (0.052) were estimated for LS, which indicates low possibility to achieve rapid genetic progress through phenotypic selection. A non-significant -actually, zero- genetic trend (0.00004 heads/kidding/year), and significant negative phenotypic and environmental trends (-0.01097 and -0.01100 heads/kidding/year, respectively) were estimated in this study. Conclusion: Optimizing environmental conditions and application of high-throughput technologies in selection programs could help reducing the extinction risk of Markhoz breed.Ramin AbdoliPouya ZamaniSeyed Ziaeddin MirhoseiniNavid Ghavi Hossein-ZadehMohamad AlmasiUniversidad de Antioquiaarticleextinction riskgenetic trendheritabilityphenotypic selectionprolificacyAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 32, Iss 1, Pp 58-63 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	extinction risk genetic trend heritability phenotypic selection prolificacy Animal culture SF1-1100
spellingShingle	extinction risk genetic trend heritability phenotypic selection prolificacy Animal culture SF1-1100 Ramin Abdoli Pouya Zamani Seyed Ziaeddin Mirhoseini Navid Ghavi Hossein-Zadeh Mohamad Almasi Genetic parameters and trends for litter size in Markhoz goats
description	Background: Prolificacy has a high economic value and is one of the most important reproduction traits in small ruminants such as Markhoz goats, which is an endangered breed. Objective: To estimate genetic, environmental and phenotypic trends, and genetic parameters for litter size (LS), as a prolificacy trait of Markhoz goat does. Methods: The study was conducted using kidding records of 3,064 Markhoz does from 1992 to 2015. Genetic parameters were estimated with a logit link function using ASReml software, fitting a repeatability animal model, with birth year, kidding year, and kidding age as fixed effects, and direct additive genetic and permanent environmental effects as random effects. Genetic, phenotypic and environmental trends were estimated by using regression of breeding value, phenotypic value and environmental deviation averages on birth year, respectively. Results: Low and negligible heritability (0.002), repeatability (0.054) and coefficient of permanent environment (0.052) were estimated for LS, which indicates low possibility to achieve rapid genetic progress through phenotypic selection. A non-significant -actually, zero- genetic trend (0.00004 heads/kidding/year), and significant negative phenotypic and environmental trends (-0.01097 and -0.01100 heads/kidding/year, respectively) were estimated in this study. Conclusion: Optimizing environmental conditions and application of high-throughput technologies in selection programs could help reducing the extinction risk of Markhoz breed.
format	article
author	Ramin Abdoli Pouya Zamani Seyed Ziaeddin Mirhoseini Navid Ghavi Hossein-Zadeh Mohamad Almasi
author_facet	Ramin Abdoli Pouya Zamani Seyed Ziaeddin Mirhoseini Navid Ghavi Hossein-Zadeh Mohamad Almasi
author_sort	Ramin Abdoli
title	Genetic parameters and trends for litter size in Markhoz goats
title_short	Genetic parameters and trends for litter size in Markhoz goats
title_full	Genetic parameters and trends for litter size in Markhoz goats
title_fullStr	Genetic parameters and trends for litter size in Markhoz goats
title_full_unstemmed	Genetic parameters and trends for litter size in Markhoz goats
title_sort	genetic parameters and trends for litter size in markhoz goats
publisher	Universidad de Antioquia
publishDate	2019
url	https://doaj.org/article/08475445c1094fecaafbf5ec6af920ee
work_keys_str_mv	AT raminabdoli geneticparametersandtrendsforlittersizeinmarkhozgoats AT pouyazamani geneticparametersandtrendsforlittersizeinmarkhozgoats AT seyedziaeddinmirhoseini geneticparametersandtrendsforlittersizeinmarkhozgoats AT navidghavihosseinzadeh geneticparametersandtrendsforlittersizeinmarkhozgoats AT mohamadalmasi geneticparametersandtrendsforlittersizeinmarkhozgoats
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Genetic parameters and trends for litter size in Markhoz goats

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