Jeffrey F. Keown

Research.com Recognitions

• 2011 - DeLaval Dairy Extension Award, American Dairy Science Association

Overview

Best Publications

• Effect of days carried calf, days dry, and weight of first calf heifers on yield.

  J.F. Keown;R.W. Everett

  159
  Citations

• Mastitis Control Program: Effect on Milk Production

  R.P. Natzke;R.W. Everett;R.S. Guthrie;J.F. Keown

  150
  Citations

• Heritability of Clinical Mastitis Incidence and Relationships with Sire Transmitting Abilities for Somatic Cell Score, Udder Type Traits, Productive Life, and Protein Yield

  D. L. Nash;G. W. Rogers;J. B. Cooper;G. L. Hargrove

  131
  Citations

• Genetic Parameters and Responses of Linear Type, Yield Traits, and Somatic Cell Scores to Divergent Selection for Predicted Transmitting Ability for Type in Holsteins

  B.J. DeGroot;J.F. Keown;L.D. Van Vleck;E.L. Marotz

  127
  Citations

• Relationships among Type, Production, and Stayability in Holstein Cattle

  R.W. Everett;J.F. Keown;E.E. Clapp

  94
  Citations

• Heritability of Intramammary Infections at First Parturition and Relationships with Sire Transmitting Abilities for Somatic Cell Score, Udder Type Traits, Productive Life, and Protein Yield

  D. L. Nash;G. W. Rogers;J. B. Cooper;G. L. Hargrove

  78
  Citations

• Production and Stayability Trends in Dairy Cattle

  R.W. Everett;J.F. Keown;E.E. Clapp

  77
  Citations

• Parameter estimates for direct and maternal genetic effects on yearling, eighteen-month, and slaughter weights of Korean Native cattle.

  J W Lee;S B Choi;Y H Jung;J F Keown

  53
  Citations

• Accuracy of First Lactation Versus All Lactation Sire Evaluations by Best Linear Unbiased Prediction

  G.R. Ufford;C.R. Henderson;J.F. Keown;L.D. Van Vleck

  50
  Citations

• Extending Lactation Records in Progress to 305-Day Equivalent

  Unknown

  44
  Citations

• Variances of Direct Genetic Effects, Maternal Genetic Effects, and Cytoplasmic Inheritance Effects for Milk Yield, Fat Yield, and Fat Percentage

  L.G. Albuquerque;J.F. Keown;L.D. Van Vleck

  36
  Citations

• Mixed Model Sire Evaluation with Dairy Cattle—Experience and Genetic Gain

  Unknown

  32
  Citations

• Variance of interaction effects of sire and herd for yield traits of Holsteins in California, New York, and Pennsylvania with an animal model.

  G. Dimov;L.G. Albuquerque;J.F. Keown;L.D. Van Vleck

  29
  Citations

• Relationships Among Severity and Duration of Clinical Mastitis and Sire Transmitting Abilities for Somatic Cell Score, Udder Type Traits, Productive Life, and Protein Yield

  D.L. Nash;G.W. Rogers;J.B. Cooper;G.L. Hargrove

  27
  Citations

• Estimation of relative economic value for herd life of dairy cattle from profile equations

  S. Jagannatha;J.F. Keown;L.D. Van Vleck

  27
  Citations

• Evaluation of autoregressive covariance structures for test-day records of Holstein cows: estimates of parameters.

  R.M. Sawalha;J.F. Keown;S.D. Kachman;L.D. Van Vleck;L.D. Van Vleck

  25
  Citations

• Identification of Factors Causing Heterogeneous Within-Herd Variance Components Using a Structural Model for Variances

  K.A. Weigel;D. Gianola;B.S. Yandell;J.F. Keown

  25
  Citations

• Estimates of genetic parameters for Holstein cows for test-day yield traits with a random regression cubic spline model.

  B. J. DeGroot;J. F. Keown;L. D. Van Vleck;S. D. Kachman

  24
  Citations

• Estimates Using an Animal Model of (Co)variances for Yields of Milk, Fat, and Protein for the First Lactation of Holstein Cows in California and New York

  L.G. Albuquerque;G. Dimov;J.F. Keown;L.D. Van Vleck

  24
  Citations

• Parameter estimates for genetic effects on carcass traits of Korean native cattle.

  J W Lee;S B Choi;J S Kim;J F Keown

  21
  Citations

• Genetic evaluation of dairy cattle with test-day models with autoregressive covariance structures and with a 305-d model.

  R.M. Sawalha;J.F. Keown;S.D. Kachman;L.D. Van Vleck;L.D. Van Vleck

  17
  Citations

• Relationship between Herd Management Practices in the Midwest on Milk and Fat Yield

  Jeffrey F. Keown

  15
  Citations

• Genetic parameters of milk, fat, and protein yields in the first three lactations, using an animal model and restricted maximum likelihood

  L. G. Albuquerque;J. F. Keown;L. D. VanVleck

  15
  Citations

• Variance Caused by Cytoplasmic Line and Sire by Herd Interaction Effects for Milk Yield Considering Estimation Bias

  P.R.N. Rorato;J.F. Keown;L.D. Van Vleck

  10
  Citations

• Genetic relationship between milk score and litter weight for Targhee, Columbia, Rambouillet, and Polypay sheep.

  R. M. Sawalha;G. D. Snowder;J. F. Keown;L. D. Van Vleck

  9
  Citations

• Effect of Variance of Interaction Effects of Sire and Herd on Selection for Milk and Fat Yield

  G. Dimov;J.F. Keown;L.D. Van Vleck;H.D. Norman

  9
  Citations

• The Economic Value of Dairy Herd improvement Information in a Sample of Midwestern Dairy Farms

  A.M. Azzam;S.M. Azzam;J.W. Keele;J.F. Keown

  7
  Citations

• Bias in Genetic Evaluations by Records of Cows Treated with Bovine Somatotropin

  S. Tsuruta;J.F. Keown;L.D. Van Vleck;I. Misztal

  7
  Citations