Research Article

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12/19/2011
Beef cattle; Gibbs samples; Growth; Reproductive traits

We estimated genetic parameters for various phases of body and testicular growth until 550 days of age in Nelore cattle, using Bayesian inference, including correlation values and error estimates. Weight and scrotal records of 54,182 Nelore animals originating from 18 farms participating in the Brazilian Nelore Breeding Program (PMGRN) were included. The following traits were measured: ... more

F.R.Araujo Neto; R.B. Lôbo; M.D.S. Mota; H.N. Oliveira
11/13/2015
Adaptability; Factor analysis; G x E interaction; Stability; Unstructured variance

This study aimed to analyze the robustness of mixed models for the study of genotype-environment interactions (G x E). Simulated unbalancing of real data was used to determine if the method could predict missing genotypes and select stable genotypes. Data from multi-environment trials containing 55 maize hybrids, collected during the 2005-2006 harvest season, were used in this study. ... more

J.J. Nuvunga; L.A. Oliveira; A.K.A. Pamplona; C.P. Silva; R.R. Lima; M. Balestre
02/25/2019
Adaptability; Computational Intelligence; Gossypium hirsutum; Stability

Cotton is the most widely utilized natural fiber in the world. Brazil is currently one of the world’s largest cotton producers. Cotton crops are cultivated in all regions of the country, especially in the Cerrado biome. Studies of genotype x environment (GxE) interactions evaluate the adaptability and stability of cotton genotypes. Adaptability and stability ... more

D.B.O. Cardoso; E.G.Silva Júnior; M.C. Reis; L.B. de Sousa; L.M.S. Falco; M.C. Mamede; B.Q.V. Machado; T.S. Paiva; C.P. Gundim; G.A. Alves
10/06/2022
Adaptability; Landraces; Manihot esculenta; Manioc; Stability

The Amazon harbors numerous bitter cassava genotypes, of which only a few have been studied agronomically. We evaluated the genotype x environment interaction (GxE) displayed by seven traditional varieties found in the Brazilian municipalities of Lábrea-AM, 07°14’83.5”S, 64°44’70”W, (Cobiçada, Minerva, and Flecha-Amarela) and Manaus-AM, 02º59’00”S, 60º01'00”W, ( ... more

E.I. Costa; C.A. Ticona-Benavente; D.Fda Silva Filho
03/12/2024
Adaptability; Genotype × Environment interaction; Glycine max L; Phakopsora pachyrhizi; Severity; yield

Two studies were undertaken with the aim of assessing the phenotypic stability and progression of ASR severity in soybean cultivars within a tropical altitude climate. In the first study, six commercial soybean cultivars containing the INOX® and a multiline cultivar were evaluated in 24 environments during the 2017/18 and 2018/19 growing seasons, assessing yield ... more

N.J.D. Vilela; A.C.H.F. Carvalho; A.T. Bruzi; F.C.L. Medeiros; A.G.S.G. Santiago; E.A. Pozza; T.T.T. Rocha; M.R. Piza
11/25/2015
Cattle; Month of treatment; Parity order; Superovulation traits

In this study, the performance of 300 Changbaishan Black cattle treated for superovulation from June to September was evaluated to determine the optimal conditions and herds for bovine embryo production. Data analysis revealed that cattle treated in July and August had higher numbers of available embryos (NAE), M1 embryos (NM1), and total embryos (NTE), as well as a higher percentage of ... more

Q. Deng; Y. Gao; C.H. Li; X.F. Yu; J.S. Ren; S.J. Li; C.Z. Chen; B. Yuan; Y. Ding; H. Jiang; J.B. Zhang
11/19/2015
Cattle; Fatty acid composition; mRNA expression; PPARα signal pathway gene; Yak

Intramuscular fatty acid (FA) is related to meat qualities such as juiciness, tenderness, palatability, and shear force. PPARα plays an important role in lipid metabolism in the liver and skeletal muscle. This study investigated FA composition in yaks and cattle, in order to ascertain whether a correlation between PPARα signal pathway genes as candidate genes and meat FA composition in ... more

W. Qin; C.N. Liang; X. Guo; M. Chu; J. Pei; P.J. Bao; X.Y. Wu; T.K. Li; P. Yan
10/30/2015
Cattle; Depletion; Induced cells; mtDNA; Pluripotency

Large number of cellular changes and diseases are related to mutations in the mitochondrial DNA copy number. Cell culture in the presence of ethidium bromide is a known way of depleting mitochondrial DNA and is a useful model for studying such conditions. Interestingly, the morphology of these depleted cells resembles that of pluripotent cells, as they present larger and fragmented ... more

L.V.F. Pessôa; F.F. Bressan; M.R. Chiaratti; P.R.L. Pires; F. Perecin; L.C. Smith; F.V. Meirelles
03/31/2016
Candidate gene; Cattle; Fertility; Holstein; Milk; SNP

The objective of the present study was to investigate single nucleotide polymorphisms (SNPs) located in three candidate genes previously reported to have effects on fertility and milk production traits in a population of 123 Holstein cows. The milk production traits evaluated included lifetime averages of milk yield, protein concentration, and fat concentration. Fertility traits ... more

R. Hill; A. Canal; K. Bondioli; R. Morell; M.D. Garcia; R. Hill; A. Canal; K. Bondioli; R. Morell; M.D. Garcia; R. Hill; A. Canal; K. Bondioli; R. Morell; M.D. Garcia
12/02/2016
Animals; Body weight; Cattle; Genome-wide association study; Genotype; Models, Biological; Phenotype; Polymorphism, Single Nucleotide; Quantitative trait loci

This study aimed to investigate the predictability of a phenotype when using a dynamic model of cattle growth. Genotypic and phenotypic information on Nellore (Bos indicus) cattle were used in a genome-wide association analysis designed to contrast the biological interpretation of core parameters [conversion efficiency of metabolizable energy to net energy for gain (k) and adjusted final ... more

M.C. Freua; M.H.A. Santana; R.V. Ventura; J.B.S. Ferraz

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