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Age-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazil
(2005-10-01)
In a field trial involving 68 rubber tree (Hevea spp.) clones calculation of genotypic correlation coefficients revealed significant age-age correlation from age 1 to 6 (immature period) for girth A and for age 7 to 12 ...
Estimates of genetic parameters for visual scores and their correlation with production and reproductive traits in Brahman cattle
(Sociedade Brasileira de Zootecnia, 2012-06-01)
The objective of this study was to evaluate the association of visual scores of body structure, precocity and muscularity with production (body weight at 18 months and average daily gain) and reproductive (scrotal ...
Genetic parameters and trends of morphometric traits of GIFT tilapia under selection for weight gain
(Univ Sao Paolo, 2014-07-01)
The main factor considered in breeding programs for fish is growth, which can be assessed in terms of a gain in either weight or body measurements. This study was undertaken to evaluate the morphometric traits of GIFT ...
Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
(Pagepress Publ, 2007-01-01)
The objectives of this study were to estimate genetic parameters for test-day milk, fat and protein yields, in Murrah buffaloes. In this study 4,757 complete lactations of Murrah buffaloes were analyzed. The (co) variance ...
Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
(2007-12-01)
The objectives of this study were to estimate genetic parameters for testday milk, fat and protein yields, in Murrah buffaloes. In this study 4,757 complete lactations of Murrah buffaloes were analyzed. The (co) variance ...
Estimates of genetic parameters and cluster analyses for carcass and meat quality traits in birds
(Empresa Brasil Pesq Agropec, 2017-03-01)
The objective of this work was to estimate genetic parameters for bird carcass and meat quality traits, as well as to explore the genetic patterns of the breeding values of this population using cluster analyses. Data from ...
Genetic parameters for post-weaning visual scores and reproductive traits in Suffolk sheep
(2018-01-01)
The aim of this study was to estimate the coefficients of heritability and genetic correlations among visual scores (conformation, CPW; precocity, PPW; musculature, MPW ) and reproductive traits: age at first lambing (AFL) ...
Genetic parameters for body weight, carcass chemical composition and yield in a broiler-layer cross developed for QTL mapping
(Sociedade Brasileira de Genética, 2011-01-01)
The objective of this study was to estimate genetic and phenotypic correlations of body weight at 6 weeks of age (BW6), as well as final carcass yield, and moisture, protein, fat and ash contents, using data from 3,422 F2 ...
Analysis of genetic correlations of hip height with selection indices and mature weight in Nelore cattle
(2013-01-25)
Body size is directly related to the productive and reproductive performance of beef cattle raised under free-range conditions. In an attempt to better plan selection criteria, avoiding extremes in body size, this study ...
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 ...