Modified minimax quadratic estimation of variance components [PDF]
, 1989 summary:The paper deals with modified minimax quadratic estimation of variance and covariance components under full ellipsoidal restrictions. Based on the, so called, linear approach to estimation variance components, i. e.
Gaffke, Norbert (Prof.) +2 more
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Genetic heterogeneity of residual variance in broiler chickens [PDF]
, 2006 Aims were to estimate the extent of genetic heterogeneity in environmental variance. Data comprised 99 535 records of 35-day body weights from broiler chickens reared in a controlled environment.
Rowe Suzanne J +14 more
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Genetic analysis of semen from different origins and their impact on production traits: A single and multiple trait approach [PDF]
Biotechnology in Animal Husbandry, 2023 This study aims to evaluate the genetics of imported semen and assess the genetic trend of production traits in Holstein cows during their first lactation in Iran.
Jafarzadeh Ghadimi Ramin +4 more
doaj +1 more source
Estimation of prediction error variances via Monte Carlo sampling methods using different formulations of the prediction error variance [PDF]
, 2009 peer-reviewedCalculation of the exact prediction error variance covariance matrix is often computationally too demanding, which limits its application in REML algorithms, the calculation of accuracies of estimated breeding values and the control of ...
Veerkamp Roel F +15 more
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Efficient pricing of barrier options with the variance-gamma model [PDF]
, 2004 We develop an efficient Monte Carlo algorithm for pricing barrier options with the variance gamma model [fMAD98a]. After generalizing the double-gamma bridge sampling algorithm of [fAVR03a], we develop conditional bounds on the process paths and exploit ...
Avramidis, Athanassios.N.
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Genetic Variability of Show Jumping Attributes in Young Horses Commencing Competing [PDF]
Asian-Australasian Journal of Animal Sciences, 2015 The aim of the study was to select traits that may constitute a prospective criterion for breeding value prediction of young horses. The results of 1,232 starts of 894 four-, five-, six-, and seven-year-old horses, obtained during jumping championships ...
Tomasz Próchniak +3 more
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EVALUATION OF SOME SUGAR BEET VARIETIES UNDER THREE HARVESTING DATES [PDF]
Journal of Agricultural Chemistry and Biotechnology, 2009 Two field experiments were carried out at Tamiya, El-Fayoum Governorate during 2006/2007 and 2007/2008 seasons to evaluate yield, yield components and quality of six sugar beet varieties namely LP 11, Demapoly, LP 13 , Pleno , Kawemira and LP 12 under ...
K. A. M. Khaled +2 more
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Variance components estimation for farrowing traits of three purebred pigs in Korea [PDF]
Asian-Australasian Journal of Animal Sciences, 2017 Objective This study was conducted to estimate breed-specific variance components for total number born (TNB), number born alive (NBA) and mortality rate from birth through weaning including stillbirths (MORT) of three main swine breeds in Korea.
Bryan Irvine Lopez +4 more
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Variance component analysis of skin and weight data for sheep subjected to rapid inbreeding [PDF]
, 1999 A variance component analysis was carried out on data from a 20-year experiment in the rapid inbreeding of purebred and crossbred lines of three hill breeds of sheep.
Shaw, F.H. +7 more
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On testing variance components in unbalanced mixed linear model [PDF]
, 2001 summary:The paper presents some approximate and exact tests for testing variance components in general unbalanced mixed linear model. It extends the results presented by Seifert (1992) with emphasis on the computational aspects of the ...
Širková, Lýdia, Witkovský, Viktor
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