Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil

The aim of this study was to analyze the weight at birth (BW) and adjusted at 205 (W205), 365 (W365) and 550 (W55O) days in beef buffaloes from Brazil, using two approaches: parametric, by normal distribution, and non-parametric, by kernel function, and thus estimating the genetic, environmental and...

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Main Authors: J.C. de Souza, P.R. Antunes de Mello Affonso, P.L. Souza Carneiro, A. de Amorim Ramos, C.H. Mendes Malhado, R.M. Filho
Format: Article
Language:English
Published: Taylor & Francis Group 2010-02-01
Series:Italian Journal of Animal Science
Subjects:
Online Access:http://www.aspajournal.it/index.php/ijas/article/view/985
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author J.C. de Souza
P.R. Antunes de Mello Affonso
P.L. Souza Carneiro
A. de Amorim Ramos
C.H. Mendes Malhado
R.M. Filho
author_facet J.C. de Souza
P.R. Antunes de Mello Affonso
P.L. Souza Carneiro
A. de Amorim Ramos
C.H. Mendes Malhado
R.M. Filho
author_sort J.C. de Souza
collection DOAJ
description The aim of this study was to analyze the weight at birth (BW) and adjusted at 205 (W205), 365 (W365) and 550 (W55O) days in beef buffaloes from Brazil, using two approaches: parametric, by normal distribution, and non-parametric, by kernel function, and thus estimating the genetic, environmental and phenotypic correlation among traits. Information of 5,169 animals at birth (BW), 3,792 at 205 days (W205), 3.883 at 365 days (W365) and 1,524 at 550 days of age (W550) were used. The birth weight distribution presented an evident discrepancy in relation to the normal distribution. However, W205, W365 and W550 presented normal distributions. The birth weight presented weak genetic, environmental, and phenotypic associations with the other weight measurements. On the other hand, the weight traits at 205, 365, 550 days of age showed a high genetic correlation.
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spelling doaj.art-533c96da6e7c4fcb9b5a46a7a34682182022-12-21T22:27:39ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2010-02-0162s33133310.4081/ijas.2007.s2.331Univariate and bivariate distribution of growth traits in beef buffaloes from BrazilJ.C. de SouzaP.R. Antunes de Mello AffonsoP.L. Souza CarneiroA. de Amorim RamosC.H. Mendes MalhadoR.M. FilhoThe aim of this study was to analyze the weight at birth (BW) and adjusted at 205 (W205), 365 (W365) and 550 (W55O) days in beef buffaloes from Brazil, using two approaches: parametric, by normal distribution, and non-parametric, by kernel function, and thus estimating the genetic, environmental and phenotypic correlation among traits. Information of 5,169 animals at birth (BW), 3,792 at 205 days (W205), 3.883 at 365 days (W365) and 1,524 at 550 days of age (W550) were used. The birth weight distribution presented an evident discrepancy in relation to the normal distribution. However, W205, W365 and W550 presented normal distributions. The birth weight presented weak genetic, environmental, and phenotypic associations with the other weight measurements. On the other hand, the weight traits at 205, 365, 550 days of age showed a high genetic correlation.http://www.aspajournal.it/index.php/ijas/article/view/985Normal distribution, Parameter, Scatter plot, Selection, Smoothing
spellingShingle J.C. de Souza
P.R. Antunes de Mello Affonso
P.L. Souza Carneiro
A. de Amorim Ramos
C.H. Mendes Malhado
R.M. Filho
Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil
Italian Journal of Animal Science
Normal distribution, Parameter, Scatter plot, Selection, Smoothing
title Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil
title_full Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil
title_fullStr Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil
title_full_unstemmed Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil
title_short Univariate and bivariate distribution of growth traits in beef buffaloes from Brazil
title_sort univariate and bivariate distribution of growth traits in beef buffaloes from brazil
topic Normal distribution, Parameter, Scatter plot, Selection, Smoothing
url http://www.aspajournal.it/index.php/ijas/article/view/985
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