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Mostrando ítems 21-30 de 2038
Effect of missing values on variance component estimates in multienvironment trials
(Crop Science Society of America, 2019-03)
Multienvironment trials (METs) are conducted to evaluate cultivars across locations and years with often incomplete data structure due to annual cultivar replacements. The imbalance could cause biased variance component ...
Genetic parameters of soybean populations obtained from crosses between grain and food genotypes
(Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, 2021-01-01)
In addition to the agronomic traits of interest, soybean cultivars destined for human consumption must have specific attributes that meet the demands of the consumer market. To meet this demand, this study aimed to select ...
Additive genetic variance and covariance between relatives in synthetic wheat crosses with variable parental ploidy levels
(Oxford University Press, 2021-01-07)
Cultivated bread wheat (Triticum aestivum L.) is an allohexaploid species resulting from the natural hybridization and chromosome doubling of allotetraploid durum wheat (T. turgidum) and a diploid goatgrass Aegilops tauschii ...
Effect of residual variance heterocedasticity on milk yield and age at first calving genetic parameter estimates
(2010-01-01)
Genetic evaluation programs assumed homocedasticity of residual variance estimates for different milk yield levels. The objective of this study was to estimate genetic parameters for 305-d milk yield (MY305) and age at ...
Estimation of genetic parameters for weaning weights and metabolic weights characteristics and post weaning in Brahman cattle
(Arquivo Brasileiro Medicina Veterinaria Zootecnia, 2019-01-01)
The objective of this study was to estimate heritability and correlations of 36,505 animals, belonging to the Brazilian Association of Zebu Breeders. They were estimated by Restricted Maximum Likelihood method (REML) using ...
Additive genetic variance and covariance between relatives in synthetic wheat crosses with variable parental ploidy levels
(Oxford University Press, 2021)
Cluster and meta-analyses of genetic parameters for feed intake traits in growing beef cattle
(Wiley-Blackwell, 2014-06-01)
A data set based on 50 studies including feed intake and utilization traits was used to perform a meta-analysis to obtain pooled estimates using the variance between studies of genetic parameters for average daily gain ...
Genetic evaluation using multi-trait and random regression models in Simmental beef cattle
(Genetics and Molecular Research, 2017)
Variance component estimates applying random regression models for test-day milk yield in Caracu heifers (Bos taurus Artiodactyla, Bovidae)
(Sociedade Brasileira de Genética, 2008-01-01)
Random regression models (RRM) were used to estimate covariance functions for 2,155 first-lactation milk yields of native Brazilian Caracu heifers. The models included contemporary group (defined as year-month of test and ...
Genetic parameter estimates for feed efficiency and dry matter intake and their association with growth and carcass traits in Nellore cattle
(Elsevier B.V., 2014-09-01)
This study estimated genetic parameters and (co)variance components for dry matter intake (DMI), average daily gain (ADG), feed conversion rate (FCR), residual feed intake (RFI), residual body weight gain (RWG) and residual ...