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The sheep industry and genomics: Current opportunities, future potential

The sheep industry and genomics: Current opportunities, future potential. Ben Hayes. No. ~ 3 times cheaper (if you’re lucky) No. ~ 20 times cheaper. Question: Is anything 100 times cheaper now than in 2006?. The technology. 50,000 DNA markers on a chip ~ 100 x cheaper than 6 years ago.

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The sheep industry and genomics: Current opportunities, future potential

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  1. The sheep industry and genomics: Current opportunities, future potential Ben Hayes

  2. No. ~ 3 times cheaper (if you’re lucky) No. ~ 20 times cheaper • Question: Is anything 100 times cheaper now than in 2006?

  3. The technology • 50,000 DNA markers on a chip • ~ 100 x cheaper than 6 years ago

  4. Hard to measure, late in life • Lean meat yield, number of lambs weaned • Genomic breeding values: • Pedigree “borrows” information from relatives • “Borrow” information from animals with similar DNA profile • For young rams, like having some progeny with records!

  5. Recipe for success? • The lesson from Dairy, beef, sheep • Require large “reference” populations • Key traits measured (html) • DNA profiles evaluated with chip • Larger -> more accuracy • Sheep CRC Information nucleus ideal! > 12,000 progeny

  6. Accuracy of selection results in gain Accuracy = 35% 6

  7. Accuracy of selection results in gain Top 10 GEBV Accuracy = 35% 7

  8. Doubling accuracy is doubling gain! Top 10 GEBV Accuracy = 70% 8

  9. Accuracies of genomic breeding values

  10. Accuracies of genomic breeding values

  11. Accuracies of genomic breeding values

  12. Accuracies of genomic breeding values

  13. Economic benefit? • Without genomics • $2 ewe / yr • With current genomics extra 10% • $2.20 ewe / yr • After 7 years of Sheep CRC extra 30% • $2.60 ewe / yr • Even greater in Merinos

  14. Reduce generation interval? • Young sire programs • More accurate selection of young rams • Juvenile in vitro embyro transfer (JIVET) • Choose ewe lambs with genomic ASBVs! • Halve generation interval • Towards 100% increased gain ($4/ewe/yr)?

  15. Conclusions • Rapid cost reduction DNA technology • Accurate genomic breeding values • Other traits on the way • Number of lambs weaned, Omega-3 • Synergies young sire programs, JIVET • Towards doubling rate of gain?

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