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Abstract

The objective of this study was to investigate the population genetic structure and the effects of inbreeding on growth traits of Nellore breed animals from the Amazon biome. The database used for the analyzes contained records of 1,402,287 animals born between the years of 1950 and 2012 and weight ...

Author(s)
Dotta, J. C.; Falcão, A. J. da S.; Carneiro, P. L. S.; Conti, A. C. M.; Rezende, M. P. G. de
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2019, 31, 2, pp Article 17
Abstract

Evaluating phenotypic diversity makes it possible to identify discrepancies in aptitudes among animals of different genetic bases, which is an indicator of adaptive or selective differences between populations. The objective of this work was to evaluate the morphofunctional diversity of 452 male...

Author(s)
Rezende, M. P. G. de; Souza, J. C. de; Carneiro, P. L. S.; Bozzi, R.; Jardim, R. J. D.; Malhado, C. H. M.
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2018, 50, 5, pp 1033-1040
Abstract

Genetic diversity is one of the most important issues in studies on conservation of cattle breeds and endangered species. The objective of this study was to estimate the levels of genetic differentiation between locally adapted taurine (Bos taurus taurus) and zebu (Bos taurus indicus) breeds in...

Author(s)
Campos, B. M.; Carmo, A. S. do; Egito, A. A. do; Mariante, A. S. da; Albuquerque, M. S. M. do; Gouveia, J. J. S. de; Malhado, C. H. M.; Verardo, L. L.; Silva, M. V. G. B. da; Carneiro, P. L. S.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 8, pp 1677-1684
Abstract

Inbreeding depression is caused by breeding between closely related individuals and can have a significant negative impact on cattle production. It can be estimated at the population level using pedigree analysis or molecular markers. Such estimations can then be used to better manage the genetic...

Author(s)
Amaral, R. dos S.; Malhado, C. H. M.; Martins Filho, R.; Malhado, A. C. M.; Rezende, M. P. G.; Ambrosini, D. P.; Carneiro, P. L. S.
Publisher
Universidade Federal do Paraná, UFPR, Palotina, Brazil
Citation
Archives of Veterinary Science, 2019, 24, 3, pp 68-78
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
Abstract

We evaluate genotype × environment (G × E) interactions for age at first calving (AFC) and calving interval (CI) of Nellore cattle in northeastern Brazil using four hierarchical reaction norm models (HRNMs). The best-fit model for the traits was the one step heteroscedastic hierarchical reaction...

Author(s)
Ambrosini, D. P.; Malhado, C. H. M.; Martins Filho, R.; Cardoso, F. F.; Carneiro, P. L. S.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2016, 48, 7, pp 1401-1407
AbstractFull Text

The goal of the present work was to estimate the heritability values for milk yield (MY), age at first parity (AFP), lactation length (LL) and parturition interval (PI) as well as the genetic correlation between milk production and AFP, LP and PI of female cross-breed buffaloes raised in Brazil....

Author(s)
Malhado, C. H. M.; Carneiro, P. L. S.; Martins Filho, R.; Pereira, D. G.; Affonso, P. R. A. de M.; Azevedo, D. M. M. R.; Souza, J. C. de
Publisher
Escola de Medicina Veterinária, Universidade Federal da Bahia, Bahia, Brazil
Citation
Revista Brasileira de Saude e Producao Animal, 2009, 10, 2, pp 245-255
Abstract

The objective of this study was to evaluate the genotype-environment interaction (GEI) in the body weight adjusted to 550 days of age (W550) of Polled Nellore cattle raised in Northeastern Brazil using reaction norms (RN) models. Hierarchical RN models included fixed effects for age of cow (linear...

Author(s)
Ambrosini, D. P.; Carneiro, P. L. S.; Braccini Neto, J.; Martins Filho, R.; Amaral, R. dos S.; Cardoso, F. F.; Malhado, C. H. M.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2014, 43, 7, pp 351-357

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