GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING
ABSTRACT: This study sought to estimate (co)variance and genetic parameters for birth weight (BWT) and weaning weight (WWT) in Santa Ines sheep. A total of 2,111 records were obtained from EMBRAPA/CPATC experimental herds, dating from the years 1998 to 2008. (Co)variance parameters were obtained through a two-trait analysis with the Gibbs sampling algorithm using the MTGSAM program. The mixed model included the environmental effects of sex, contemporary group and type of birth, in addition to residual, direct and maternal additive effects. Mean estimates of direct heritability for BWT and WWT were 0.25 and 0.09, respectively. Mean estimates of maternal heritability were 0.34 for BWT and 0.24 for WWT. The genetic correlation between BWT and WWT was 0.14. The results suggest that breeding Santa Ines sheep for meat production must take into consideration direct and maternal additive genetic effects.
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Universidade Federal Rural do Semi-Árido
2015
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oai:scielo:S1983-212520150004002112016-02-29GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLINGBARBOSA,LEANDRO TEIXEIRASANTOS,GLEICIANNY DE BRITOMUNIZ,EVANDRO NEVESAZEVEDO,HYMERSON COSTAFAGUNDES,JAILSON LARA Bayesian analysis Maternal effect Birth weight Weaning weight High-density intervals. ABSTRACT: This study sought to estimate (co)variance and genetic parameters for birth weight (BWT) and weaning weight (WWT) in Santa Ines sheep. A total of 2,111 records were obtained from EMBRAPA/CPATC experimental herds, dating from the years 1998 to 2008. (Co)variance parameters were obtained through a two-trait analysis with the Gibbs sampling algorithm using the MTGSAM program. The mixed model included the environmental effects of sex, contemporary group and type of birth, in addition to residual, direct and maternal additive effects. Mean estimates of direct heritability for BWT and WWT were 0.25 and 0.09, respectively. Mean estimates of maternal heritability were 0.34 for BWT and 0.24 for WWT. The genetic correlation between BWT and WWT was 0.14. The results suggest that breeding Santa Ines sheep for meat production must take into consideration direct and maternal additive genetic effects.info:eu-repo/semantics/openAccessUniversidade Federal Rural do Semi-ÁridoRevista Caatinga v.28 n.4 20152015-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252015000400211en10.1590/1983-21252015v28n423rc |
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BARBOSA,LEANDRO TEIXEIRA SANTOS,GLEICIANNY DE BRITO MUNIZ,EVANDRO NEVES AZEVEDO,HYMERSON COSTA FAGUNDES,JAILSON LARA |
spellingShingle |
BARBOSA,LEANDRO TEIXEIRA SANTOS,GLEICIANNY DE BRITO MUNIZ,EVANDRO NEVES AZEVEDO,HYMERSON COSTA FAGUNDES,JAILSON LARA GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING |
author_facet |
BARBOSA,LEANDRO TEIXEIRA SANTOS,GLEICIANNY DE BRITO MUNIZ,EVANDRO NEVES AZEVEDO,HYMERSON COSTA FAGUNDES,JAILSON LARA |
author_sort |
BARBOSA,LEANDRO TEIXEIRA |
title |
GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING |
title_short |
GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING |
title_full |
GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING |
title_fullStr |
GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING |
title_full_unstemmed |
GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING |
title_sort |
genetic parameters for growth traits of santa ines sheep using gibbs sampling |
description |
ABSTRACT: This study sought to estimate (co)variance and genetic parameters for birth weight (BWT) and weaning weight (WWT) in Santa Ines sheep. A total of 2,111 records were obtained from EMBRAPA/CPATC experimental herds, dating from the years 1998 to 2008. (Co)variance parameters were obtained through a two-trait analysis with the Gibbs sampling algorithm using the MTGSAM program. The mixed model included the environmental effects of sex, contemporary group and type of birth, in addition to residual, direct and maternal additive effects. Mean estimates of direct heritability for BWT and WWT were 0.25 and 0.09, respectively. Mean estimates of maternal heritability were 0.34 for BWT and 0.24 for WWT. The genetic correlation between BWT and WWT was 0.14. The results suggest that breeding Santa Ines sheep for meat production must take into consideration direct and maternal additive genetic effects. |
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Universidade Federal Rural do Semi-Árido |
publishDate |
2015 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252015000400211 |
work_keys_str_mv |
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1756436118726770688 |