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Lawrence Schaeffer
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19
Jamrozik, Janusz
7
Dekkers, J C M
5
Miglior, Filippo
4
Fatehi, J
4
Kistemaker, GJ
3
Kolbehdari, Davood
3
Boettcher, Paul
3
Jansen, Gerald
3
Schenkel, Flávio
3
Bohmanova, Jarmila
1
Strandén, Ismo
1
Van Doormaal, BJ
1
Miller, SP
1
Osborne, Vern
1
Robinson, J A B
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Geonetwork of Lawrence Schaeffer (preview)
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All Publications
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2009: Nixon M; Bohmanova J; Jamrozik J; Schaeffer L R; Hand K; Miglior F
Genetic parameters of milking frequency and milk production traits in Canadian Holsteins milked by an automated milking system.
Journal of dairy science 2009;92(7):3422-30.
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2009: Loker S; Miglior F; Bohmanova J; Schaeffer L R; Jamrozik J; Kistemaker G
Short communication: effect of preadjusting test-day yields for stage of pregnancy on variance component estimation in Canadian Ayrshires.
Journal of dairy science 2009;92(5):2270-5.
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2009: Loker S; Miglior F; Bohmanova J; Jamrozik J; Schaeffer L R
Phenotypic analysis of pregnancy effect on milk, fat, and protein yields of Canadian Ayrshire, Jersey, Brown Swiss, and Guernsey breeds.
Journal of dairy science 2009;92(3):1300-12.
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2008: Schaeffer L R; Jamrozik J
Random regression models: a longitudinal perspective.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2008;125(3):145-6.
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2008: Sargolzaei M; Schenkel F S; Jansen G B; Schaeffer L R
Extent of linkage disequilibrium in Holstein cattle in North America.
Journal of dairy science 2008;91(5):2106-17.
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2008: Heydarpour M; Schaeffer L R; Yazdi M H
Influence of population structure on estimates of direct and maternal parameters.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2008;125(2):89-99.
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2008: Jamrozik J; Fatehi J; Schaeffer L R
Comparison of models for genetic evaluation of survival traits in dairy cattle: a simulation study.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2008;125(2):75-83.
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2007: Kolbehdari D; Schaeffer L R; Robinson J A B
Estimation of genome-wide haplotype effects in half-sib designs.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2007;124(6):356-61.
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2007: Palucci Valentina; Schaeffer Lawrence R; Miglior Filippo; Osborne Vern
Non-additive genetic effects for fertility traits in Canadian Holstein cattle.
Genetics, selection, evolution : GSE 2007;39(2):181-93.
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2007: Jamrozik J; Fatehi J; Schaeffer L R
Application of robust procedures for estimation of breeding values in multiple-trait random regression test-day model.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2007;124(1):3-11.
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2006: Schaeffer L R
Strategy for applying genome-wide selection in dairy cattle.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2006;123(4):218-23.
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2006: Kolbehdari D; Jansen G B; Schaeffer L R; Allen B O
Transmission disequilibrium test for quantitative trait loci detection in livestock populations.
Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie 2006;123(3):191-7.
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2005: Kolbehdari Davood; Jansen Gerald B; Schaeffer Lawrence R; Allen Brian O
Power of QTL detection by either fixed or random models in half-sib designs.
Genetics, selection, evolution : GSE 2005;37(6):601-14.
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2005: Barrett R; Miglior F; Jansen G; Jamrozik J; Schaeffer L R
Joint international evaluation of Milking Shorthorn dairy cattle for production traits.
Journal of dairy science 2005;88(9):3326-36.
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2005: Roso V M; Schenkel F S; Miller S P; Schaeffer L R
Estimation of genetic effects in the presence of multicollinearity in multibreed beef cattle evaluation.
Journal of animal science 2005;83(8):1788-800.
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2005: Jamrozik J; Fatehi J; Kistemaker G J; Schaeffer L R
Estimates of genetic parameters for Canadian Holstein female reproduction traits.
Journal of dairy science 2005;88(6):2199-208.
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2004: Muir B L; Fatehi J; Schaeffer L R
Genetic relationships between persistency and reproductive performance in first-lactation Canadian holsteins.
Journal of dairy science 2004;87(9):3029-37.
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2004: Jamrozik J; Strandén I; Schaeffer L R
Random regression test-day models with residuals following a Student's-t distribution.
Journal of dairy science 2004;87(3):699-705.
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2002: Jamrozik J; Schaeffer L R; Weigel K A
Estimates of genetic parameters for single- and multiple-country test-day models.
Journal of dairy science 2002;85(11):3131-41.
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2002: Jamrozik J; Schaeffer L R; Weigel K A
Genetic evaluation of bulls and cows with single- and multiple-country test-day models.
Journal of dairy science 2002;85(6):1617-22.
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2002: Schenkel Flávio S; Schaeffer Lawrence R; Boettcher Paul J
Comparison between estimation of breeding values and fixed effects using Bayesian and empirical BLUP estimation under selection on parents and missing pedigree information.
Genetics, selection, evolution : GSE 2002;34(1):41-59.
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2001: Luo M F; Boettcher P J; Schaeffer L R; Dekkers J C
Bayesian inference for categorical traits with an application to variance component estimation.
Journal of dairy science 2001;84(3):694-704.
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2000: Collard B L; Boettcher P J; Dekkers J C; Petitclerc D; Schaeffer L R
Relationships between energy balance and health traits of dairy cattle in early lactation.
Journal of dairy science 2000;83(11):2683-90.
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2000: Schaeffer L R; Jamrozik J; Kistemaker G J; Van Doormaal B J
Experience with a test-day model.
Journal of dairy science 2000;83(5):1135-44.
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1998: Jairath L; Dekkers J C; Schaeffer L R; Liu Z; Burnside E B; Kolstad B
Genetic evaluation for herd life in Canada.
Journal of dairy science 1998;81(2):550-62.
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1997: Jamrozik J; Kistemaker G J; Dekkers J C; Schaeffer L R
Comparison of possible covariates for use in a random regression model for analyses of test day yields.
Journal of dairy science 1997;80(10):2550-6.
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1997: Jamrozik J; Schaeffer L R; Dekkers J C
Genetic evaluation of dairy cattle using test day yields and random regression model.
Journal of dairy science 1997;80(6):1217-26.
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1997: Jamrozik J; Schaeffer L R
Estimates of genetic parameters for a test day model with random regressions for yield traits of first lactation Holsteins.
Journal of dairy science 1997;80(4):762-70.
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1996: Schaeffer L R; Jamrozik J
Multiple-trait prediction of lactation yields for dairy cows.
Journal of dairy science 1996;79(11):2044-55.
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1996: Schaeffer L R; Reents R; Jamrozik J
Factors influencing international comparisons of dairy sires.
Journal of dairy science 1996;79(6):1108-16.
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1995: Reents R; Dekkers J C; Schaeffer L R
Genetic evaluation for somatic cell score with a test day model for multiple lactations.
Journal of dairy science 1995;78(12):2858-70.
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1995: Reents R; Jamrozik J; Schaeffer L R; Dekkers J C
Estimation of genetic parameters for test day records of somatic cell score.
Journal of dairy science 1995;78(12):2847-57.
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1994: Schaeffer L R
Multiple-country comparison of dairy sires.
Journal of dairy science 1994;77(9):2671-8.
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1994: Tierney J S; Schaeffer L R
Inclusion of semen price of the sire in an animal model to account for preferential treatment.
Journal of dairy science 1994;77(2):576-82.
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1993: Ptak E; Horst H S; Schaeffer L R
Interaction of age and month of calving with year of calving for production traits of Ontario Holsteins.
Journal of dairy science 1993;76(12):3792-8.
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1991: Schaeffer L R
C. R. Henderson: contributions to predicting genetic merit.
Journal of dairy science 1991;74(11):4052-66.
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1991: Jamrozik J; Schaeffer L R; Burnside E B; Sullivan B P
Threshold models applied to Holstein conformation traits.
Journal of dairy science 1991;74(9):3196-201.
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1989: Raheja K L; Burnside E B; Schaeffer L R
Relationships between fertility and production in Holstein dairy cattle in different lactations.
Journal of dairy science 1989;72(10):2670-8.
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1989: Raheja K L; Burnside E B; Schaeffer L R
Heifer fertility and its relationship with cow fertility and production traits in Holstein dairy cattle.
Journal of dairy science 1989;72(10):2665-9.
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1988: Nadarajah K; Burnside E B; Schaeffer L R
Genetic parameters for fertility of dairy bulls.
Journal of dairy science 1988;71(10):2730-4.
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1984: Ali T E; Burnside E B; Schaeffer L R
Relationship between external body measurements and calving difficulties in Canadian Holstein-Friesian cattle.
Journal of dairy science 1984;67(12):3034-44.
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1982: Westell R A; Burnside E B; Schaeffer L R
Evaluation of Canadian Holstein-Friesian sires on disposal reasons of their daughters.
Journal of dairy science 1982;65(12):2366-72.
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