Modelos de regressão aleatória para característica de crescimento em bovinos da raça guzerá

Jorge Luis Ferreira; Tiago Bresolin; Fernando Brito Lopes; José Américo Soares Garcia; Leandro Lopes Nepomuceno; Aline Beatriz Schmidt; Raysildo Barbosa Lobo

doi:10.1590/1089-6891v18e-39566

Modelos de regressão aleatória para característica de crescimento em bovinos da raça guzerá

Translated title of the contribution: Random regression models for growth trait in Guzerá cattle

Jorge Luis Ferreira, Tiago Bresolin, Fernando Brito Lopes, José Américo Soares Garcia, Leandro Lopes Nepomuceno, Aline Beatriz Schmidt, Raysildo Barbosa Lobo

Research output: Contribution to journal › Article › peer-review

Abstract

The aim of this study was to estimate (co)variance components and genetic parameters from birth to yearling weight (550 days of age) in Guzerá cattle, using random regression models. Data set from animals (male and female) born between 1993 and 2011 belonging to ten farms in seven Brazilian States were used. The best-fit model considering direct and maternal genetic effect and permanent environmental animal effect were adjusted by fourth, third, and second order, respectively, using orthogonal polynomials of Legendre. The higher estimated values of direct heritability were observed in birth (0.88) and yearling weight (0.70). The genetic correlations were moderate to high magnitude, remaining up even with the increase in the ages gap.

Translated title of the contribution	Random regression models for growth trait in Guzerá cattle
Original language	Portuguese
Article number	e39566
Journal	Ciencia Animal Brasileira
Volume	18
Issue number	1
DOIs	https://doi.org/10.1590/1089-6891v18e-39566
State	Published - 2017
Externally published	Yes

Keywords

Beef cattle
Genetic correlations
Heritability
Orthogonal polynomials of legendre

ASJC Scopus subject areas

Animal Science and Zoology
General Veterinary

Online availability

10.1590/1089-6891v18e-39566

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title = "Modelos de regress{\~a}o aleat{\'o}ria para caracter{\'i}stica de crescimento em bovinos da ra{\c c}a guzer{\'a}",

abstract = "The aim of this study was to estimate (co)variance components and genetic parameters from birth to yearling weight (550 days of age) in Guzer{\'a} cattle, using random regression models. Data set from animals (male and female) born between 1993 and 2011 belonging to ten farms in seven Brazilian States were used. The best-fit model considering direct and maternal genetic effect and permanent environmental animal effect were adjusted by fourth, third, and second order, respectively, using orthogonal polynomials of Legendre. The higher estimated values of direct heritability were observed in birth (0.88) and yearling weight (0.70). The genetic correlations were moderate to high magnitude, remaining up even with the increase in the ages gap.",

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author = "Ferreira, {Jorge Luis} and Tiago Bresolin and Lopes, {Fernando Brito} and Garcia, {Jos{\'e} Am{\'e}rico Soares} and Nepomuceno, {Leandro Lopes} and Schmidt, {Aline Beatriz} and Lobo, {Raysildo Barbosa}",

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volume = "18",

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T1 - Modelos de regressão aleatória para característica de crescimento em bovinos da raça guzerá

AU - Ferreira, Jorge Luis

AU - Bresolin, Tiago

AU - Lopes, Fernando Brito

AU - Garcia, José Américo Soares

AU - Nepomuceno, Leandro Lopes

AU - Schmidt, Aline Beatriz

AU - Lobo, Raysildo Barbosa

PY - 2017

Y1 - 2017

N2 - The aim of this study was to estimate (co)variance components and genetic parameters from birth to yearling weight (550 days of age) in Guzerá cattle, using random regression models. Data set from animals (male and female) born between 1993 and 2011 belonging to ten farms in seven Brazilian States were used. The best-fit model considering direct and maternal genetic effect and permanent environmental animal effect were adjusted by fourth, third, and second order, respectively, using orthogonal polynomials of Legendre. The higher estimated values of direct heritability were observed in birth (0.88) and yearling weight (0.70). The genetic correlations were moderate to high magnitude, remaining up even with the increase in the ages gap.

AB - The aim of this study was to estimate (co)variance components and genetic parameters from birth to yearling weight (550 days of age) in Guzerá cattle, using random regression models. Data set from animals (male and female) born between 1993 and 2011 belonging to ten farms in seven Brazilian States were used. The best-fit model considering direct and maternal genetic effect and permanent environmental animal effect were adjusted by fourth, third, and second order, respectively, using orthogonal polynomials of Legendre. The higher estimated values of direct heritability were observed in birth (0.88) and yearling weight (0.70). The genetic correlations were moderate to high magnitude, remaining up even with the increase in the ages gap.

KW - Beef cattle

KW - Genetic correlations

KW - Heritability

KW - Orthogonal polynomials of legendre

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Modelos de regressão aleatória para característica de crescimento em bovinos da raça guzerá

Abstract

Keywords

ASJC Scopus subject areas

Online availability

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