Interbull Meeting 2025

Thursday 19 June

08:30 to 16:30

Interbull Technical Committee

19.00- 22.00

Dinner: Proof on Main

Friday 20 June

10:30 to 16:30

Interbull Steering Committee

19.00-22.00

Dinner: Ramsi's Cafe on the World (transport provided)

Sunday 22 June

17:15 to 18:00

Interbull Technical Committee

Tuesday 24 June

09:00 to 10:00

Interbull Steering Committee

Technical and Steering Committees are administrative meetings restricted to the respective members.  The  Business Meeting is public and is dedicated to discuss operational and political decisions of the Steering Committee with participating organizations; Open Meetings are dedicated to scientific reports.

 08.30-10.30

Kentucky Ballroom E

 Session 1- Implementing New Traits

Chair: Filippo Miglior

0

8:30

Welcome

Dr Matthew Shaffer, Interbull Steering Committee Chair, and ADSA President Dr. Mike VandeHaar

1

8:40

A. Nazari

MACE portfolio: Expansion to new traits

2

8:55

A.Fleming

Genomic Evaluation for Calf Health in Canada

3

9:10

M. Axford

Genomic predictions for dairy calf health traits

4

9:25

X. Wu

Reliability Assessment of Single-Milking Fat and Protein Percentages in Dairy Cattle

5

9:40

A. Kudinov

Update of genetic parameters and inclusion of Swedish and Finnish β -hydroxybutyrate and acetone measurements to the Nordic General Health evaluation model.

6

9:55

F. Galluzzo

Genetic evaluation of twinning rate in Italian Holstein

7

10:10

B. Cuyabano

Genetic correlation: a heritable parameter

 10.30-11.00

 Coffee break

 11.00 – 12.30

Business Meeting I   (All Welcome)

Kentucky Ballroom E

 12.30 - 13.30

Lunch

Kentucky Ballroom A-D

 13.30- 15.00 

Session II - Experience with Single Step I

 Chair: Urs Schnyder

Kentucky Ballroom E 

1

13:30

K. Stachowicz

Implementation of single-step genetic evaluation in Poland

2

13:45

K. Wijnrocx

Implementation of a single-step genomic evaluation system for dairy cattle in Wallonia, Belgium

3

14:00

 J. Heise

Introduction of Single Step genomic evaluations in German Holsteins

4

14:15

S. Id-Lahoucine

Transition of the UK dairy national evaluation to across-breed and single-step genomic evaluation: somatic cell counts as a case trait

5

14:30

I. Ampofo

One Moo-ve Closer: Single-step Genomic Predictions for Crossbred Holstein and Jersey Cattle Using Metafounders

6

14:45

K. Byskov

Implementation of single-step genomic BLUP in the Nordic evaluation for beef cattle

15.00 - 15.30 

Coffee Break

 15.30-17.00  

Session III - Experience with Single Step II 

 Chair: Ezequiel Nicolazzi

Kentucky Ballroom E

1

15:30

S. Widmer

Single-step genetic evaluation for claw health traits in Switzerland

2

15:45

Z. Liu

Optimisation of the German single-step SNP BLUP model for calf fitness in Holstein

3

16:00

D. Słomian

Alternative Approaches to handling missing parents in genetic evaluation of dairy cattle using single-step test-day SNP-BLUP model

4

16:15

H. Eding

Integration of single step DGV in conventional genetic evaluations using DGV-PBLUP

5

16:30

A. Legarra

Lazy computation of Residual Polygenic effects

6

16:45

H. Gao

Comparing methods for approximating reliabilities in large-scale single-step genomic evaluations

19.00 - 22.00

Interbull Dinner

The Brown Hotel, Gallery Ballroom- 16th Floor.

(Registration required)

08.30-10.30 

Session IV - Meta-analysis & Big Data 

 Chair: Daniele Vicario

 Kentucky Ballroom E

1

8:30

M. Axford

Is ‘Farmeromics’ the missing omic?

2

8:45

P. Stratz

Integration of MACE breeding values into Swiss multi-trait test-day model evaluation

3

9:00

B. Makanjuola

Genetic and genomic relationships among Canadian Holstein dairy cattle population and international Holstein bulls

4

9:15

A. Rossoni

Improve of Stability of Test-Day Repeatability Model for Production Traits in Italian Brown Swiss

5

9:30

T. McWhorter

Foundational Review of U.S. Female Fertility Trait Evaluations

6

9:45

H. Zhang

Genetic analysis provides insight into estrus expression in Holstein cows

7

10:15

J. Mugambe

Female inclusive MACE for improved genetic evaluations in small populations: A special case for Ayrshire dairy herds

10.30-11.00 

Coffee Break

 11.00-12.30

Session V 

Efficiency & Sustainability I : Methane Evaluations

 Chair: Jan-Thijs van Kaam 

 Kentucky Ballroom E

1

11:00

Raphael Mrode

Variance components estimation for methane emission under various cow activities in smallholders’ dairy farms

2

11:15

J. Vandenplas

Quantifying the effective contribution of phenotypic records to genetic evaluations: a case study on enteric methane emissions

3

11:30

R.Stephansen

Genomic prediction of enteric methane emissions in Danish Holstein using single step and multi-trait prediction models

4

11:45

G. de Jong

Sustainable dairy breeding: reducing methane emissions in the Netherlands and Flanders

5

12:00

N. Gengler

Advancing Genomic Evaluation for Methane Efficiency in Walloon Holstein Cattle towards Implementation

6

12:15

Y. Wang

Weighted single-step genome-wide association studies for methane intensity in Chinese Holstein cattle

 12.30-13.30

Lunch

Kentucky Ballroom A-D

 13.30-15.00 Business Meeting II (All Welcome)

Kentucky Ballroom E

 15.00-15.30

Coffee Break

 15.30-17.00

Session VI

Efficiency & Sustainability II 

Chair: Marija Klopcic    

1

15:30

M. van Pelt

Genetic evaluation for longevity of dairy cattle in the Netherlands

2

15:45

B. Van Doormaal

Modernizing Canada’s Lifetime Performance Index (LPI)

3

16:00

J. Graham

Quantifying the use of and the genetic progress from advanced mating strategies in US dairy herds

4

16:15

J.T. van Kaam

Expanded Genetic Evaluation of Heat Tolerance in Italian Holsteins

5

16:30

R. Stephansen

Nordic Genetic Evaluation of Feed Efficiency – Updated Model for Saved Feed in Nordic Dairy Cattle Breeds.

6

16:45

R. Bonifazi

The M3GE project: developing beef cattle multi-trait multi-breed multi-country genomic evaluations for sustainability traits and small populations.

17:00

M. Shaffer

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