Flock Profile for Merinos. Tom Granleese

Transcription

1 Flock Profile for Merinos Tom Granleese

2 2 Genetics hopefully not nonsense

3 Flock Profile Merino Genomic flock average for key merino traits Genomic predictions for 20 randomly sampled sheep from a drop Genomic predictions are then scaled to ASBV level NOT ASBVs» Non SG members cannot receive genomic ASBVs 3

4 Flock Profile Uses Estimate genetic merit on ASBV level youngest drop Breed more profitable sheep Make better ram buying decisions Make better ram team allocation decisions Store in Ram Select Track progress over multiple years Use for marketing ewes if selling 4

5 How to participate Register details with Sheep Genomics office Take blood or tissue samples (very simple to do) of 20 Merino sheep from your drop random selection Receive results weeks after $800 (+GST) payment is made 5

6 Genomic Prediction: basic idea 1) measure lots of traits on lots of sheep and DNA test Reference population with breeding values

7 Genomic Prediction: basic idea 1) measure lots of traits on lots of sheep and DNA test Reference population with breeding values 2) Breeder DNA tests young sheep Prediction based on DNA relationships to reference population genomic breeding values

8 Interpreting results Traits consistent with Sheep Genetics 8

9 Interpreting results Your Flock Profile results - directly comparable to ASBVs 9

10 Interpreting results Flock Profile values percentile directly comparable to Sheep Genetics 10

11 Interpreting results Results are a guide, not absolute values Results become more accurate the more closely related the flock to the reference population 11

12 Interpreting results Select ram teams with higher average ASBVs in desired traits to get genetic gain Example: fleece weights fibre diameter Example: Select ram team average ASBVs ABOVE 11.4 ycfw OR ABOVE 90 th percentile BELOW or equal to -1.9 yfd OR ABOVE 15 th percentile 12

13 Report a Poll Horn indication Client: J. Bloggs PH Status Percentage (%) Date: 13/6/2017 PP: 20 Flock Drop: 2015 PH: 75 HH: 5 Pure polled 13

14 Report a Poll Horn indication Client: J. Bloggs PH Status Percentage (%) Date: 13/6/2017 PP: 20 Flock Drop: 2015 PH: 75 HH: 5 Copy of poll and horned gene but usually phenotypically polled (dominant) 14

15 Report a Poll Horn indication Client: J. Bloggs PH Status Percentage (%) Date: 13/6/2017 PP: 20 Flock Drop: 2015 PH: 75 HH: 5 Pure horned rams/wethers usually phenotypically horned; some ewes phenotypically horned. 15

16 Validation Flock average ASBV adult fibre diameter 3 2 Flock Profile adult fibre diameter R² = Is this good? It was positive enough to further investigate!

17 Does Phenotype match GBV PWMMC data 50 wether teams x 30 wethers randomly selected after weaning Included flocks using SG and non-sg rams Even up shearing upon arrival Run under same conditions from then on in Wagga 15 wethers shorn and then slaughtered after year 1 Remaining15 wethers shorn and then slaughtered after year 2 17 Flock Profile on each team of remaining 15 wethers

18 Does Phenotype match GBV PWMMC data Cohort average µm Flock Profile adult fibre diameter c R² = Is this good? We are very pleased as geneticists!

19 Ram team average vs Flock Profile example Ram team average ASBV Flock Profile 2016 drop ywt yfd ycfw ysl

20 20 Ram team managing example Ram Select

21 Ram team average vs Flock Profile example Ram team average ASBV Flock Profile 2016 drop ywt yfd ycfw ysl

22 Common question Why isn t the genetic merit of my flock the same as my ram team average? or Why doesn t my Flock Profile match my ram team? 22

23 Quick answer! Genetic lag! What does that mean? 23

24 Genetic lag Only half of genetics comes from ram Other half from dam What is the age structure of dams? 24

25 Age structure of pedigree YOB: 2015 YOB: 2014 YOB: 2013 YOB: 2012 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2017 Ram team with ASBVS drop

26 Age structure of pedigree YOB: 2013 YOB: 2012 YOB: 2011 YOB: 2010 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2015 Ram team with ASBVS YOB: 2015 YOB: 2014 YOB: 2013 YOB: 2012 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2017 Ram team with ASBVS drop

27 Age structure of pedigree YOB: 2012 YOB: 2011 YOB: 2010 YOB: 2009 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2014 Ram team with ASBVS YOB: 2015 YOB: 2014 YOB: 2013 YOB: 2012 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2017 Ram team with ASBVS drop

28 Age structure of pedigree YOB: 2011 YOB: 2010 YOB: 2009 YOB: 2008 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2013 Ram team with ASBVS YOB: 2015 YOB: 2014 YOB: 2013 YOB: 2012 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2017 Ram team with ASBVS drop

29 Age structure of pedigree YOB: 2010 YOB: 2009 YOB: 2008 YOB: 2007 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2012 Ram team with ASBVS YOB: 2015 YOB: 2014 YOB: 2013 YOB: 2012 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2017 Ram team with ASBVS drop

30 Age structure of pedigree YOB: 2009 YOB: 2008 YOB: 2007 YOB: 2006 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2011 Ram team with ASBVS YOB: 2015 YOB: 2014 YOB: 2013 YOB: 2012 YOB: % 2yo 25% 3yo 20% 4yo 15% 5yo 5% 6yo 2017 Ram team with ASBVS drop

31 Genetic merit of drop usually 3-6 years behind ram team average in self-replacing flock If breeding objective is consistent Will move closer to 3 years with lower ewe generation intervals (select more young ewes) Balance genetic gain vs commercial productivity Ewes most productive 3-5 years age commercially As demonstrated by Flock Profile 31

32 Ram team average vs Flock Profile example Ram team average ASBV Flock Profile 2016 drop ywt yfd ycfw ysl

33 What s in the pipeline Update report format Results available on Ram Select Tests now available at $800 + GST to any Merino breeder (flocks unrelated to Sheep Genetics flocks can participate) 33

34 Summing Up For Merinos only (so far) regardless of bloodlines Results based on genomics only at ASBV scale Tests now available at $800 + GST to any Merino breeder Integrate results with Ram Select Changing how results are being displayed 34

35 Acknowledgements Collaborative project Daniel Brown (AGBU & Sheep Genetics [MLA]) Julius van der Werf (UNE & Sheep CRC) Sam Clark (UNE) Andrew Swan (AGBU) Klint Gore (AGBU) Hamish Chandler (MLA) Lu Hogan (Sheep CRC) Bec McCarthur-Onslow (Australian Innovation Co.) Sally Martin and Craig Wilson (PWMMC) Jim Meckiff (Allflex) Anthony Shepherd (Sheep Matters) Luke Stephen (NSW DPI) Caris Jones (Merino Select [MLA]) The participants! see map next slide 35

36 Any further questions? Participants now or waiting 36