Results 31 to 40 of about 945,949 (268)

Reconstruction of the Earth's matter density profile using a single neutrino baseline [PDF]

open access: yes, 2001
In this paper, we show numerically that a symmetric Earth matter density profile can, in principle, be reconstructed from a single baseline energy spectrum up to a certain precision.
Akhmedov   +57 more
core   +2 more sources

Robust forward simulations of recurrent hitchhiking [PDF]

open access: yes, 2014
Evolutionary forces shape patterns of genetic diversity within populations and contribute to phenotypic variation. In particular, recurrent positive selection has attracted significant interest in both theoretical and empirical studies.
Hernandez, Ryan D.   +1 more
core   +2 more sources

Research Note: Genetic parameters for egg production and clutch-related traits in indigenous Beijing-You chickens

open access: yesPoultry Science, 2023
: Egg products from indigenous chickens have growing market shares as consumers are pursuing differentiation in egg consumption. The genetic improvement in egg production performance of those breeds is crucial for increasing the economic profit.
Hanhan Yang   +10 more
doaj   +1 more source

Heterogeneidade de (Co)variância para as produções de leite e de gordura entre vacas puras e mestiças da raça Gir Heterogeneity of (Co)variance for milk and fat yields between purebred and crossbred Gir cows

open access: yesRevista Brasileira de Zootecnia, 2004
Registros de produção de leite e de gordura de 5086 vacas puras e mestiças da raça Gir de rebanhos de diferentes Estados do Brasil, ajustados para idade adulta, rebanho, ano e estação de parto, foram utilizados para estimar componentes de (co)variância ...
Claudio Napolis Costa   +4 more
doaj   +1 more source

Multivariate Survival Mixed Models for Genetic Analysis of Longevity Traits [PDF]

open access: yes, 2014
A class of multivariate mixed survival models for continuous and discrete time with a complex covariance structure is introduced in a context of quantitative genetic applications.
Labouriau, Rodrigo   +2 more
core   +2 more sources

Estimativas de componentes de (co)variância e herdabilidade direta e materna de pesos corporais em ovinos da raça Santa Inês Estimates of (co) variance components and direct and maternal heritability for growth traits in Santa Inês sheep breed

open access: yesRevista Brasileira de Zootecnia, 1999
O objetivo deste trabalho foi estimar os componentes de (co)variância e herdabilidade direta e materna de pesos corporais em ovinos da raça Santa Inês.
Wandrick Hauss de Sousa   +3 more
doaj   +1 more source

Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market

open access: yesAnimals, 2022
The objective of this study was to estimate the genetic parameters of litter size and piglet weight from farrowing to weaning in KHAPS Black sows. The genetic parameters investigated were the direct (h2d), maternal (h2m), realized (h2r), and total (h2T ...
Hsiu-Lan Lee   +7 more
doaj   +1 more source

Identifying early indicator traits for sow longevity using a linear-threshold model in Thai Large White and Landrace females [PDF]

open access: yesAnimal Bioscience, 2021
Objective The objective of the study was to investigate the possibility of utilizing an early litter size trait as an indirect selection trait for longevity and to estimate genetic parameters between sow stayability and litter size at different parities ...
Suppasit Plaengkaeo   +2 more
doaj   +1 more source

Distributed parameter tuning for genetic algorithms [PDF]

open access: yes, 2010
Genetic Algorithms (GA) is a family of search algorithms based on the mechanics of natural selection and biological evolution. They are able to efficiently exploit historical information in the evolution process to look for optimal solutions or ...
Barrero, David F.   +3 more
core   +2 more sources

Estimation of heritability for milk urea and genetic correlations with milk production traits in 3 Danish dairy breeds

open access: yesJournal of Dairy Science, 2023
: The aim of this study was to estimate genetic parameters for milk urea (MU) content in 3 main Danish dairy breeds. As a part of the Danish milk recording system, milk samples from cows on commercial farms were analyzed for MU concentration (mmol/L) and
A.J. Buitenhuis, N.A. Poulsen
doaj   +1 more source

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