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作者:Roberto Daniel Sainz , José Luiz Rodrigues
来源:[J].Livestock Science(IF 1.249), 2020, Vol.233
摘要:Abstract(#br)The aim of this study was to compare metabolic profiles of maternal and fetal blood and liver gene expression patterns of Day-225 bovine fetuses produced either in vivo (IVD) by superovulation and artificial insemination, or in vitro by in vitro fertilization (IVF) o...
作者:... Eliane Sayuri Miyagi , Raysildo Barbosa Lôbo , Roberto Daniel Sainz
来源:[J].Revista Ciência Agronômica, 2017, Vol.45 (1), pp.168-176
摘要:The objective of the present study was to analyze the phenotypic inter-relationships between growth, feed intake and carcass traits in polled Nellore cattle, as well as to determine which bulls produced the most efficient progeny. The experiment was conducted in the feedlot ...
作者:... Cláudio Ulhôa Magnabosco , Marcelo Goncalves Narciso , Roberto Daniel Sainz
来源:[J].PLoS ONE(IF 3.73), 2017, Vol.11 (1)
摘要:This research evaluated a multivariate approach as an alternative tool for the purpose of selection regarding expected progeny differences (EPDs). Data were fitted using a multi-trait model and consisted of growth traits (birth weight and weights at 120, 210, 365 and 450 days of ...
作者:... José Américo Soares Garcia , Raysildo Barbosa Lôbo , Roberto Daniel Sainz
来源:[J].Semina: Ciências Agrárias(IF 0.301), 2015, Vol.36 (3), pp.1713-1724
摘要:Random regression models are currently used in genetic evaluation of beef cattle, because they allow changes in the mean and variance of the trait over time as well as estimation of (co) variances between any points along the growth curve. This study aimed to estimate (co)varianc...
作者:... José Américo Soares Garcia , Raysildo Barbosa Lôbo , Roberto Daniel Sainz
来源:[J].Semina: Ciências Agrárias(IF 0.301), 2015, Vol.36 (4), pp.2787-2798
摘要:Reaction Norm (RN) is the study of genotype-environment interaction (GxE) that complies with alternative ways of genotypes within different environments. This study was carried out to verify GxE by a reaction norm model of weights at 120 (W120) and 210 (W210) days of age in Nello...
作者:Roberto Daniel Sainz , Eliane Sayuri Miyagi ...
来源:[J].Revista Brasileira de Zootecnia, 2004, Vol.33 (6), pp.2330-2342
摘要:Noventa e seis bovinos foram distribuídos aleatoriamente em um delineamento inteiramente casualizado, em esquema fatorial 4x3, sendo quatro genótipos, Nelore (N), ½ Simental ½ Nelore (SN), ½ Red Angus ½ Nelore (AN) e ½ Red Angus ¼ Simental ¼ Nelore (ASN), e três co...
作者:Roberto Daniel Sainz , Patrícia Guimarães Pimentel
来源:[J].Revista Brasileira de Zootecnia, 2012, Vol.41 (3), pp.717-725
摘要:The objective of this research was to determine the chemical composition and ruminal degradation of the crude protein (CP), total and individual amino acids of leaves from tropical forages: perennial soybean (Neonotonia wightii), cassava (Manihot esculenta), leucaena (Leucaena le...
作者:Roberto Daniel Sainz , Luís Gustavo Barioni ...
来源:[J].Scientia Agricola(IF 0.796), 2005, Vol.62 (1), pp.76-91
摘要:Mathematical models can be used to improve performance, reduce cost of production, and reduce nutrient excretion by accounting for more of the variation in predicting requirements and feed utilization in each unique production situation. Mathematical models can be classified...
作者:Roberto Daniel Sainz , Raysildo Barbosa Lobo
来源:[J].Pesquisa Agropecuária Brasileira(IF 0.661), 2009, Vol.44 (2), pp.197-202
摘要:O objetivo deste trabalho foi estimar correlações genéticas e fenotípicas entre escores visuais e características de carcaça medidas por ultrassom, para verificar a eficácia desses escores na determinação da musculosidade e na avaliação da carcaça. As característic...
作者:... Raysildo Barbosa Lôbo , Luiz Antônio Framartino Bezerra , Roberto Daniel Sainz
来源:[J].Genetics and Molecular Biology(IF 0.744), 2007, Vol.30 (2), pp.343-348
摘要:We used Gibbs sampling in single and two-trait animal models to estimate genetic parameters for some reproductive and related traits of Nellore cattle (Bos indicus). Female traits were age at first calving (AFC), cumulative productivity (CP) and adult weight (AW). For males,...

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