2003 Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Comparison of Longevity.

Slides:

Advertisements

Similar presentations

2001 PLACE, DATE (1) Cow Fertility and Effect on Longevity PAUL VANRADEN Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville,

Advertisements

2002 Paul M. VanRaden and Ashley H. Sanders Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

Impact of selection for increased daughter fertility on productive life and culling for reproduction H. D. Norman, J. R. Wright*, R. H. Miller Animal Improvement.

2006 J.B. Cole,* G.R. Wiggans, and P.M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

2006 J.B. Cole Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Genetic.

2007 Paul VanRaden Animal Improvement Programs Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA 2007 Selection.

2007 Paul VanRaden 1, Curt Van Tassell 2, George Wiggans 1, Tad Sonstegard 2, Jeff O’Connell 1, Bob Schnabel 3, Jerry Taylor 3, and Flavio Schenkel 4,

2002 Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Selection of dairy.

2007 J. B. Cole 1,*, P. M. VanRaden 1, J. R. O'Connell 3, C. P. Van Tassell 1,2, T. S. Sonstegard 2, R. D. Schnabel 4, J. F. Taylor 4, and G. R. Wiggans.

2004 R. L. Powell, A. H. Sanders, and H. D. Norman Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

2007 Paul VanRaden Animal Improvement Programs Lab, Beltsville, MD 2011 Avoiding bias from genomic pre- selection in converting.

2007 ADSA 2007 (1)H.D. Norman Effect of service sire and cow sire on gestation length H.D. Norman,* J.R. Wright, P.M. VanRaden, and J.B. Cole Animal Improvement.

G. R. Wiggans*, L. L. M. Thornton*,1, R. R. Neitzel †, and N. Gengler ‡ * Animal Improvement Programs Laboratory, ARS, USDA, Beltsville, MD †

Interbull Technical Workshop, March 2-3 (1) Rex L. Powell and Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service,

2002 ADSA 2002 (HDN-1) H.D. NORMAN* ( ), R.H. MILLER, P.M. V AN RADEN, and J.R. WRIGHT Animal Improvement Programs.

Dr BE Mostert Geneticist SA Stud Book The Genetics of Longevity… A Quantitative Perspective.

2006 Paul VanRaden Animal Improvement Programs Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA Fertility Trait.

2003 G.R. Wiggans,* P.M. VanRaden, and J.L. Edwards Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

2007 Paul VanRaden and Mel Tooker Animal Improvement Programs Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA

John B. Cole Animal Improvement Programs Laboratory Agricultural Research Service, USDA Beltsville, MD , USA The use and.

2007 Paul VanRaden, Mel Tooker, Jan Wright, Chuanyu Sun, and Jana Hutchison Animal Improvement Programs Lab, Beltsville, MD National Association of Animal.

Paul VanRaden USDA Animal Improvement Programs Laboratory Beltsville, MD, USA 2004 Choice of Scales for Delivery of Genetic Evaluations.

2007 Paul VanRaden, George Wiggans, Jeff O’Connell, John Cole, Animal Improvement Programs Laboratory Tad Sonstegard, and Curt Van Tassell Bovine Functional.

2007 Paul VanRaden, Mel Tooker, and Melvin Kuhn Animal Improvement Programs Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA

Paul VanRaden Animal Improvement Programs Laboratory Beltsville, MD, USA 2004 Genetic Base and Trait Definition Update.

2006 Paul VanRaden, John Cole, and George Wiggans Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

2005 Paul VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD An Example from Dairy.

2005 Paul VanRaden Animal Improvement Programs Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA Selection for.

Genetic Evaluation of Lactation Persistency Estimated by Best Prediction for Ayrshire, Brown Swiss, Guernsey, and Milking Shorthorn Dairy Cattle J. B.

2002 Paul VanRaden, Ashley Sanders, Melvin Tooker, Bob Miller, and Duane Norman Animal Improvement Programs Laboratory Agricultural Research Service, USDA,

2005 Paul VanRaden, John Cole, Duane Norman, Mel Tooker, and Jan Wright Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville,

Synchronization Effects on Parameters for Days Open M. T. Kuhn, J. L. Hutchison, and R. H. Miller* Animal Improvement Programs Laboratory, Agricultural.

Genetic interactions for heat stress and herd yield level: predicting foreign genetic merit from domestic data J. R. Wright*, P. M. VanRaden Animal Genomics.

2003 Melvin Tooker, Paul VanRaden, Ashley Sanders, and George Wiggans Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville,

2007 J.B. Cole Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Genetic Evaluation.

2007 Paul VanRaden Animal Improvement Programs Lab, USDA, Beltsville, MD, USA Pete Sullivan Canadian Dairy Network, Guelph, ON, Canada

Paul VanRaden, 1 Katie Olson, 2 Dan Null, 1 Mehdi Sargolzaei, 3 Marco Winters, 4 and Jan-Thijs van Kaam 5 1 Animal Improvement Programs Laboratory, ARS,

Paul VanRaden and Melvin Tooker* Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD 2006.

2003 P.M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Genetic Evaluations.

7 th World Congr. Genet. Appl. Livest. Prod Selection of dairy cattle for lifetime profit Paul M. VanRaden Animal Improvement Programs Laboratory.

J. B. Cole *, G. R. Wiggans, P. M. VanRaden, and R. H. Miller Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville,

Paul VanRaden and John Cole Animal Improvement Programs Laboratory Beltsville, MD, USA 2004 Planned Changes to Models and Trait Definitions.

Adjustment of breeding values for past and future inbreeding Paul VanRaden*, Lori Smith Animal Improvement Programs Laboratory Agricultural Research Service,

2002 Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Longevity and Fertility.

2003 Paul VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Genetic Evaluation.

Paul VanRaden Animal Improvement Programs Laboratory Beltsville, MD, USA 2004 NAAB Update : Base Change, Udder Health, Longevity,

Multi-trait, multi-breed conception rate evaluations P. M. VanRaden 1, J. R. Wright 1 *, C. Sun 2, J. L. Hutchison 1 and M. E. Tooker 1 1 Animal Genomics.

Paul VanRaden 1, Mel Tooker 1, Mahinda Dematawewa 2, and Ron Pearson 2 1 Animal Improvement Programs Laboratory, USDA 2 Virginia Polytechnic.

2005 Paul VanRaden and Mel Tooker Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Genetic.

2003 P.M. VanRaden* and M.E. Tooker Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Definition.

H.D. Norman* J.R. Wright, P.M. VanRaden, and M.T. Kuhn Animal Improvement Programs Laboratory Agricultural.

Interbull meeting (1) Paul M. VanRaden and Rex L. Powell Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville,

2006 Paul VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Predicting Genetic.

2004 P.M. VanRaden, M.E. Tooker*, and J.B. Cole Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

2006 Paul VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD AIPL Contributions.

ADSA Indianapolis 2001 (1) 2001 A Global Scale for Ranking Dairy Bulls Using Blended National Rankings Rex L. Powell * Paul M. VanRaden Animal Improvement.

2001 ADSA Indianapolis 2001 (1) Heterosis and Breed Differences for Yield and Somatic Cell Scores of US Dairy Cattle in the 1990’s. PAUL VANRADEN Animal.

2002 Rex L. Powell Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD

Paul VanRaden Animal Improvement Programs Laboratory Beltsville, MD, USA Inbreeding Adjustments and Effect on Genetic Trend.

2007 Paul VanRaden Animal Improvement Programs Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA 2007 Genetic evaluation.

2007 Paul VanRaden 1, Curt Van Tassell 2, George Wiggans 1, Tad Sonstegard 2, Bob Schnabel 3, Jerry Taylor 3, and Flavio Schenkel 4, Paul VanRaden 1, Curt.

2007 Paul VanRaden, Jan Wright, Gary Fok, and Mel Tooker Animal Genomics and Improvement Lab Agricultural Research Service, USDA Beltsville, MD, USA

2005 P.M. VanRaden and M.E. Tooker* Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Effect.

Methods to compute reliabilities for genomic predictions of feed intake Paul VanRaden, Jana Hutchison, Bingjie Li, Erin Connor, and John Cole USDA, Agricultural.

Correlations Among Measures of Dairy Cattle Fertility and Longevity

Measures of Fertility: Heritabilities and Genetic Correlations

Normality and Skewness of Genetic Evaluations

Longevity and Fertility

Stillbirth, Longevity and Fertility Update

3Canadian Dairy Network, Guelph, ON Canada

Presentation transcript:

2003 Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Comparison of Longevity and Fertility Trait Definitions in Theory and Simulation

Interbull Workshop March 2-3, 2003 (2) P.M. VanRaden 2003 Goals  Compare methods to evaluate non- normally distributed traits Linear analysis of length of time Binomial analysis of culling rate Survival analysis for log(culling rate)  Try to understand parameters  Evaluate sires from simulated data

Interbull Workshop March 2-3, 2003 (3) P.M. VanRaden 2003 Current Longevity Evaluations  Linear animal or sire models Binomial culling rate – Single EBV = c (SWE, Cornell) – Multiple EBV = c t (CAN, AUS, IRL) Productive life – Single EBV = 1/c (USA, GBR, ISR) – Multiple EBV = 1/c t (NZL)  Non-linear sire-MGS models Survival analysis – Single EBV = log(c * env t ) (DEU, FRA, NLD, ITA, BEL, CHE)

Interbull Workshop March 2-3, 2003 (4) P.M. VanRaden 2003 Animal vs Sire-MGS Models  Value of maternal relatives Average of 5 maternal brothers for bulls proven in USA Extra info is worth daughters when heritability is low (.10 to.03) Animal vs sire models differ more than linear vs non-linear (Boettcher et al 1999 JDS 82:1034)  All relatives or non-linear math?

Interbull Workshop March 2-3, 2003 (5) P.M. VanRaden 2003 Distribution of Longevity

Interbull Workshop March 2-3, 2003 (6) P.M. VanRaden 2003 ≤ 50 ≥ 250 Distribution of Days Open Holstein Calvings Cows culled for reproductive reasons

Interbull Workshop March 2-3, 2003 (7) P.M. VanRaden 2003 Toss Coin Until Head Observed

Interbull Workshop March 2-3, 2003 (8) P.M. VanRaden 2003 Maximum Likelihood  Define fraction of cows culled in each lactation = c and number of lactations survived by cow i = y i Prob(y i | c) = c (1 – c) (Yi – 1) ML estimate of c = n / Σ y i Linear estimate of (1/c) = Σ y i / n  Culling rate is just reciprocal of number of lactations (no info lost)

Interbull Workshop March 2-3, 2003 (9) P.M. VanRaden 2003 Prior Distributions  Sire effects normal for: Number of lactations (linear model) Culling rate (binomial model) Log of culling rate (survival model)  Differences are small if heritability is low  Prob (y | c) can be the same, but Prob (c) differs

Interbull Workshop March 2-3, 2003 (10) P.M. VanRaden 2003 Comparison of Priors

Interbull Workshop March 2-3, 2003 (11) P.M. VanRaden 2003 Simulated Data  500 sires with daughters, 10 replicates  Sire effects normal for log (c /.33) BV for log(relative risk) transformed to culling rate and longevity by non-linear formulas True BV had product-moment (linear) correlations of.98 to.995.  What scale should MACE work on?

Interbull Workshop March 2-3, 2003 (12) P.M. VanRaden 2003 Simulation Results  Heritability estimates.106 for number of lactations.038 for culling rate (per lactation).091 for log(number of lactations)  True accuracy, or corr (EBV, BV).72 for number of lactations.72 for culling rate.70 for log(number of lactations)

Interbull Workshop March 2-3, 2003 (13) P.M. VanRaden 2003 Conclusions  Including all relatives is more important when heritability is low  EBV from repeated binomial models are reciprocals of PL  True reliabilities are similar, but reported reliabilities differ slightly  Linear functions of data seem OK