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Abstract

The objective of this work was to verify the presence of genotype-environment interactions (GEI) on the weight adjusted to 365 days of age (W365) for Tabapua cattle in the Northeast of Brazil, using reaction norm (RN) models. The reaction norm model with homogeneous residual variance and 1-step...

Author(s)
Souza, L. de A.; Malhado, C. H. M.; Braccini Neto, J.; Martins Filho, R.; Carneiro, P. L. S.
Publisher
Universidade Federal Rural do Semi-Árido, Rio Grande do Norte, Brazil
Citation
Revista Caatinga, 2016, 29, 1, pp 206-215
Abstract

The objective was to compare models by Bayes factor (BF) to estimate the (co)variance components, genetic parameters and genetic values for the adjusted weights at 205 (W205), 365 (W365) and 550 (W550) days of age in Tabapuã animals reared on pasture in the Brazilian Northeast. Information about...

Author(s)
Oliveira, A. P. de; Malhado, C. H. M.; Barbosa, L. T.; Martins Filho, R.; Carneiro, P. L. S.
Publisher
Universidade Federal Rural do Semi-Árido, Rio Grande do Norte, Brazil
Citation
Revista Caatinga, 2015, 28, 4, pp 227-234
Abstract

This study investigated the presence of genotype-environment interaction (GEI) for body weight adjusted to 205 days of age (W205) in Polled Nellore cattle raised in north-eastern Brazil using reaction norm (RN) models. The reaction norm hierarchical models (RNHM) included the fixed (linear and...

Author(s)
Ambrosini, D. P.; Malhado, C. H. M.; Braccini Neto, J.; Martins Filho, R.; Affonso, P. R. A. de M.; Carneiro, P. L. S.
Publisher
Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
Citation
Archiv Tierzucht, 2014, 57, 32, pp 1-11
Abstract

Female reproductive performance is fundamental for the economic viability of beef cattle production system. Studies of genetic parameters and trends serve as subsidy to the selection process, guiding actions for the breeding programs. The objective of this study was to evaluate parameters, genetic...

Author(s)
Silva, T. de L.; Fonseca, W. J. L.; Santos, M. R. A.; Souza, A. C. S. de; Rezende, M. P. G.; Carneiro, P. L. S.; Martins Filho, R.; Malhado, C. H. M.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2018, 30, 8, pp Article 146
AbstractFull Text

Author(s)
Amaral, R. dos S.; Carneiro, P. L. S.; Martins Filho, R.; Ambrosini, D. P.; Malhado, C. H. M.
Publisher
Escola de Medicina Veterinária, Universidade Federal da Bahia, Bahia, Brazil
Citation
Revista Brasileira de Saude e Producao Animal, 2014, 15, 2, pp 261-271
Abstract

We studied 257 herds of 257 farms, totaling 79,051 observations in eight States of the Federation, which genetic and phenotypic parameters were estimated for the weights to 205 (P205), 365 (P365) and 550 days old (P550) of Nelore, included in the system of development Control by weight (CDP)...

Author(s)
Sousa, M. F. de A.; Martins Filho, R.; Sousa Júnior, S. C. de; Fonseca, W. J. L.; Terto e Sousa, G. G.; Luz, C. S. M.; Barros Junior, C. P.; Araujo, A. C.; Araújo, J. I. M.
Publisher
Canadian Center of Science and Education, Toronto, Canada
Citation
Journal of Agricultural Science (Toronto), 2013, 5, 8, pp 50-56
AbstractFull Text

The main objective of this study was to apply three-mode principal component analysis to assess the triple interaction (genotype × location × feeding) on direct genetic value for weight at 205 days of age. We used 60 sires with offspring in three regions of northeastern Brazil (Maranhão, Mata and...

Author(s)
Franco, I. L.; Malhado, C. H. M.; Carneiro, P. L. S.; Martins Filho, R.; Pereira, D. G.; Dias, C. T. dos S.
Publisher
Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
Citation
Ciência Rural, 2012, 42, 12, pp 2252-2258
Abstract

The objective of this study was to characterize the population genetic structure of the Gir breed in the Northeast of Brazil. The data used in this study were taken from pedigree information of 8,897 Gir animals between 1957 and 2007, obtained from the Brazilian Zebu Breeders Association (ABCZ)....

Author(s)
Oliveira, A. P. de; Malhado, C. H. M.; Carneiro, P. L. S.; Martins Filho, R.; Silveira, É. S.; Souza, L. de A.; Muniz, L. M. S.; Azevêdo, D. M. M. R.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2012, 41, 5, pp 1153-1157
Abstract

The objective of this study was to evaluate the history of the Tabapuã breed in Northeastern Brazil by determining its population structure and genetic progress. Pedigree information from animals born in the period between 1965 and 2006 and weight-adjusted data at 205 (W205), 365 (W365) and 550...

Author(s)
Caires, D. N.; Malhado, C. H. M.; Souza, L. de A.; Teixeira Neto, M. R.; Carneiro, P. L. S.; Martins Filho, R.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2012, 41, 8, pp 1858-1865
AbstractFull Text

The objective of this study is to compare random-regression models used to describe changes in evaluation parameters for growth in Tabapuã bovine raised in the Northeast of Brazilian. The M4532-5 random-regression model was found to be best for estimating the variation and heritability of growth...

Author(s)
Oliveira, M. R.; Azevêdo, D. M.; Malhado, C.; Pires, L.; Martins Filho, R.; Sousa Júnior, S.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2017, 69, 2, pp 457-464

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