نتایج جستجو برای: estimation breeding value

تعداد نتایج: 1029091  

Background: Milk proteins genes have been the focus of the researches as the candidate target genes that play a decisive role when animal breeding is desired.Objectives: In the present study, the transcriptional levels of Beta-lactoglobulin (BLG) and Alpha S1 casein (CSN1S1) genes were investigated during prenatal, milking and drying times in mammary glands of the Adani goats which showed...

2000
A. Legarra

Test day (TD) milk yield and protein percentage models and genetic parameters estimation has been studied in Latxa and Manchega milk ewes. Genetic parameters for test day data were estimated under a multivariate animal model which considered production in successive test days in first lactation as different traits and under a univariate animal model considering milk and protein percentage test ...

2017

Selection indexes have been extensively applied in the estimation of breeding value of dairy cattle for single traits as well as for combinations of traits for selection purposes. Milestones in methodology, such as multiple-trait evaluation procedures by BLUP, (co)variance component estimation, nonlinear models, discounted gene flow, dynamic programming, and international sire evaluations, toge...

2009
A. APOSTOLOV

APOSTOLOV, A. and I. SABEVA, 2009. Breeding value estimation on some selection traits of performance productivity of small pig populations from the Danube White breed. Bulg. J. Agric. Sci., 15: 276-280 Breeding value estimation was calculated on the basis of mixed-model, Animal model (sire model). The influence of the herd (replacement animals and culled animals), sex and year was studied. The ...

Journal: :Journal of dairy science 1994
J Philipsson G Banos T Arnason

Selection indexes have been extensively applied in the estimation of breeding value of dairy cattle for single traits as well as for combinations of traits for selection purposes. Milestones in methodology, such as multiple-trait evaluation procedures by BLUP, (co)variance component estimation, nonlinear models, discounted gene flow, dynamic programming, and international sire evaluations, toge...

2012
Jeffrey B. Endelman Jean-Luc Jannink

The additive relationship matrix plays an important role in mixed model prediction of breeding values. For genotype matrix X (loci in columns), the product XX' is widely used as a realized relationship matrix, but the scaling of this matrix is ambiguous. Our first objective was to derive a proper scaling such that the mean diagonal element equals 1+f, where f is the inbreeding coefficient of th...

Journal: :Animal science journal = Nihon chikusan Gakkaiho 2009
Aisaku Arakawa Hiroaki Iwaisaki Katsuhito Anada

Volumes of official data sets have been increasing rapidly in the genetic evaluation using the Japanese Black routine carcass field data. Therefore, an alternative approach with smaller memory requirement to the current one using the restricted maximum likelihood (REML) and the empirical best linear unbiased prediction (EBLUP) is desired. This study applied a Bayesian analysis using Gibbs sampl...

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