Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models

Background: Buffalo breeding has significantly increased in Brazil over recent years. However, few genetic evaluations have been conducted. Objective: To assess Genotype x Environment Interactions in the Mediterranean Water Buffalo in Brazil, for weight at 205 days of age, using reaction norm models...

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Autores principales:	Fernando B. Rodrigues, Carlos H. M. Malhado, Paulo L. S. Carneiro, Diego P. Ambrosini, Marcos P. G. Rezende, Riccardo Bozzi, Jiuzhou Song
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2021
Materias:	bayesian inference breeding value buffaloes environment environmental gradient genetic evaluation genotypes genotype by environment interaction hierarchical reaction rank correlations reaction norm models Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/3055740fb22247b78d10cc657ebcbdb7
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spelling	oai:doaj.org-article:3055740fb22247b78d10cc657ebcbdb72021-12-01T15:02:45ZGenotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models2256-295810.17533/udea.rccp.v34n2a05https://doaj.org/article/3055740fb22247b78d10cc657ebcbdb72021-05-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/346236https://doaj.org/toc/2256-2958Background: Buffalo breeding has significantly increased in Brazil over recent years. However, few genetic evaluations have been conducted. Objective: To assess Genotype x Environment Interactions in the Mediterranean Water Buffalo in Brazil, for weight at 205 days of age, using reaction norm models via random regression. Methods: Data for buffaloes born between 1990 and 2014 were collected from five farms ascribed to the Brazilian Buffaloe Improvement Program, located in the North (1), Northeast (1), South (2) and Southeast (1) regions of Brazil. The initial database consisted of 5,280 observations at 205 days of age (W205). We assessed fit using two hierarchical reaction norm models: a two-step (HRNM2s) and a one-step (HRNM1s). Model fit was estimated using the Deviance Information Criterion, Deviance Based on Bayes Factors and Deviance based on Conditional Predictive Ordinate. The environmental descriptors were created to group individuals into common production environments based on year, season, herd and sex. Results: The best fit was obtained for the hierarchical reaction norm model with one-step (HRNM1s). Direct heritability estimates for this model ranged from 0.17 to 0.67 and the maternal heritability from 0.02 to 0.11 with increasing environmental gradient. Lower correlations among the sire classifications were obtained in comparison with HRNM1s in environments with low and high management, confirming the presence of genotype x environment interactions. Conclusion: We recommend a wider application of genetic evaluation in buffalo aimed at identifying optimal genotypes within specific environments.Fernando B. RodriguesCarlos H. M. MalhadoPaulo L. S. CarneiroDiego P. AmbrosiniMarcos P. G. RezendeRiccardo BozziJiuzhou SongUniversidad de Antioquiaarticlebayesian inferencebreeding valuebuffaloesenvironmentenvironmental gradientgenetic evaluationgenotypesgenotype by environment interactionhierarchical reactionrank correlationsreaction norm modelsAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 34, Iss 3, Pp 166-176 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bayesian inference breeding value buffaloes environment environmental gradient genetic evaluation genotypes genotype by environment interaction hierarchical reaction rank correlations reaction norm models Animal culture SF1-1100
spellingShingle	bayesian inference breeding value buffaloes environment environmental gradient genetic evaluation genotypes genotype by environment interaction hierarchical reaction rank correlations reaction norm models Animal culture SF1-1100 Fernando B. Rodrigues Carlos H. M. Malhado Paulo L. S. Carneiro Diego P. Ambrosini Marcos P. G. Rezende Riccardo Bozzi Jiuzhou Song Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models
description	Background: Buffalo breeding has significantly increased in Brazil over recent years. However, few genetic evaluations have been conducted. Objective: To assess Genotype x Environment Interactions in the Mediterranean Water Buffalo in Brazil, for weight at 205 days of age, using reaction norm models via random regression. Methods: Data for buffaloes born between 1990 and 2014 were collected from five farms ascribed to the Brazilian Buffaloe Improvement Program, located in the North (1), Northeast (1), South (2) and Southeast (1) regions of Brazil. The initial database consisted of 5,280 observations at 205 days of age (W205). We assessed fit using two hierarchical reaction norm models: a two-step (HRNM2s) and a one-step (HRNM1s). Model fit was estimated using the Deviance Information Criterion, Deviance Based on Bayes Factors and Deviance based on Conditional Predictive Ordinate. The environmental descriptors were created to group individuals into common production environments based on year, season, herd and sex. Results: The best fit was obtained for the hierarchical reaction norm model with one-step (HRNM1s). Direct heritability estimates for this model ranged from 0.17 to 0.67 and the maternal heritability from 0.02 to 0.11 with increasing environmental gradient. Lower correlations among the sire classifications were obtained in comparison with HRNM1s in environments with low and high management, confirming the presence of genotype x environment interactions. Conclusion: We recommend a wider application of genetic evaluation in buffalo aimed at identifying optimal genotypes within specific environments.
format	article
author	Fernando B. Rodrigues Carlos H. M. Malhado Paulo L. S. Carneiro Diego P. Ambrosini Marcos P. G. Rezende Riccardo Bozzi Jiuzhou Song
author_facet	Fernando B. Rodrigues Carlos H. M. Malhado Paulo L. S. Carneiro Diego P. Ambrosini Marcos P. G. Rezende Riccardo Bozzi Jiuzhou Song
author_sort	Fernando B. Rodrigues
title	Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models
title_short	Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models
title_full	Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models
title_fullStr	Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models
title_full_unstemmed	Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models
title_sort	genotype by environment interactions for body weight in mediterranean buffaloes using reaction norm models
publisher	Universidad de Antioquia
publishDate	2021
url	https://doaj.org/article/3055740fb22247b78d10cc657ebcbdb7
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_version_	1718404862158307328

Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models

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