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Mostrando ítems 11-20 de 134
Estudo de modelo alternativo para estimação de componentes de (co)variância e predição de valores genéticos de características de crescimento em bovinos da raça Nelore
(2002-02-01)
The objectives of this study were to estimate genetic parameters for non-standardized weights at nursing (PR120), at weaning (PR240), at yearling (PR365) and at post yearling (PR550), and to predict EPD's (expected progeny ...
Genomic simulation for the study of data transformation efficiency in the genetic evaluation of cattle in the presence of heterogeneity
(Acta Scientiarum. Animal Sciences, 2019)
Principal components and factor analytic models for birth to mature weights in Nellore cattle
(2013-04-01)
A total of 61,528 weight records from 22,246 Nellore animals born between 1984 and 2002 were used to compare different multiple-trait analysis methods for birth to mature weights. The following models were used: standard ...
Comparison of factor-analytic and reduced rank models for test-day milk yield in Gyr dairy cattle (Bos indicus)
(2013-09-27)
We analyzed 46,161 monthly test-day records of milk production from 7453 first lactations of crossbred dairy Gyr (Bos indicus) x Holstein cows. The following seven models were compared: standard multivariate model (M10), ...
Genetic parameters for milk yield of Bubalus bubalis using unadjusted and adjusted milk production for days in milk.
(Pagepress Publ, 2007-01-01)
The objectives of this study were to estimate genetic parameters for unadjusted and adjusted milk production for 270 and 305 days of lactation and, subsequently, to verify the coincidence of rank of 2%, 5%, 20% and 40% ...
Short communication: Principal components and factor analytic models for test-day milk yield in Brazilian Holstein cattle
(Elsevier B.V., 2012-04-01)
A total of 46,089 individual monthly test-day (TD) milk yields (10 test-days), from 7,331 complete first lactations of Holstein cattle were analyzed. A standard multivariate analysis (MV), reduced rank analyses fitting the ...
Comparison of selection criteria for pre-weaning growth traits of Nelore cattle
(Elsevier B.V., 2004-03-01)
Genetic parameters were estimated for pre-weaning average daily gain (ADG) and number of days to gain 160 kg from birth to weaning (D 160) of Nelore cattle. Ranks of animals were compared for these traits. Heritability ...
Evaluating quality of life in mercury intoxicated people in urban-industrial environments through short-form 36 application
(2006-11-01)
Context and objective: Records of contact with mercury (Hg) exist for more than 3500 years and several problems related to the use of this element can be noticed. Considering inexistence of current reports about it, quality ...
Genetic parameter estimates for live weight and daily live weight gain obtained for Nellore bulls in a test station using different models
(Elsevier B.V., 2012-03-01)
The objective of this study was to estimate (co)variance components and genetic parameters for live weight (LW) and daily live weight gain (LWG) of Nellore bulls in a test station using multi-trait and random regression ...
Histomorphometrical and molecular evaluation of endosseous dental implants sites in humans: Correlation with clinical and radiographic aspects
(2013-04-01)
Objective: To evaluate the correlations between clinical-radiographical aspects and histomorphometric-molecular parameters of endosseous dental implant sites in humans. Material and methods: The study sample consisted of ...