Consulta: creatorFacets:"Torres Júnior,R.A.A."
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Data/hora: 11/06/2024 09:18:16

Analyses of growth curves of Nellore cattle by Bayesian method via Gibbs sampling
Provedor de dados: 45
Autores: Nobre,P.R.C.; Lopes,P.S.; Torres,R.A.; Silva,L.O.C.; Regazzi,A.J.; Torres Júnior,R.A.A.; Misztal,I.
Growth curves of Nellore cattle were analyzed using body weights measured at ages ranging from 1 day (birth weight) to 733 days. Traits considered were birth weight, 10 to 110 days weight, 102 to 202 days weight, 193 to 293 days weight, 283 to 383 days weight, 376 to 476 days weight, 551 to 651 days weight, and 633 to 733 days weight. Two data samples were created: one with 79,849 records from herds that had missing traits and another with 74,601 from herds with no missing traits. Records preadjusted to a fixed age were analyzed by a multiple trait model (MTM), which included the effects of contemporary group, age of dam class, additive direct, additive maternal, and maternal permanent environment. Analyses were carried out by a Bayesian method for all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Multiple trait; Random regression.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352003000400015

Precocidade sexual, eficiência reprodutiva e desempenho produtivo de matrizes jovens Nelore e cruzadas
Provedor de dados: 45
Autores: Reggiori,M.R.; Torres Júnior,R.A.A.; Menezes,G.R.O.; Battistelli,J.V.F.; Silva,L.O.C.; Alencar,M.M.; Oliveira,J.C.K.; Faria,F.J.C.
RESUMO Com o objetivo de avaliar matrizes da raça Nelore (NE) e cruzadas 1/2 Angus + 1/2 Nelore (AN), 1/2 Caracu + 1/2 Nelore (CN) e 1/2 Senepol + 1/2 Caracu (SC) quanto à precocidade sexual em sistemas de recria a pasto, eficiência reprodutiva e desempenho produtivo das matrizes em cada grupo genético (GG), matrizes desses grupos foram produzidas por três safras. Foram avaliadas 40 matrizes AN, 37 CN, 51 NE e 43 SC. Para prenhez precoce, matrizes AN apresentaram taxa de prenhez de 92,2% contra 29,1% para CN, 22,6% para SC e 1,1% para NE. Na prenhez convencional, matrizes AN obtiveram 99,4%, 98,8% para CN, 84,4% para SC e 80,0% para NE. A reconcepção das matrizes AN foi 86,3%, 75,1% de CN, 49,6% de NE e 43,6% de SC. Matrizes AN tiveram menor média de idade...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Puberdade; Idade ao primeiro parto; Fertilidade; Relação de desmame.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000601563

Correlation between fertility and levels of protein, sugar and free amino acids in seminal plasma of Nelore bulls
Provedor de dados: 45
Autores: Assumpção,T.I.; Torres Júnior,R.A.A.; Sousa,M.V.; Ricart,C.A.O.
Correlations between fertility and the concentrations of proteins, reducing sugars and 17 types of free amino acids in the seminal plasma of Nelore bulls were estimated. The samples were collected from 19 bulls that had high quality semen, according to physical and morphological analyses. The bulls had their fertility scores estimated based on the pregnancy of the females mated to them during three consecutive breeding seasons, either by artificial insemination or by natural breeding. A large variability in the concentrations of the molecules was observed among the samples and a significant correlation coefficient (r= 0.90) between levels of proteins and reducing sugars was estimated. None of the components showed a significant correlation with fertility.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bull; Nelore; Seminal plasma; Fertility; Biochemical composition.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000100008