Synchronizing Estrus

1. Synchronizing Estrus • Need cycling cows! • Methods • Luteolysis • Destroy Corpus luteum • Progestagen • Artificial corpus luteum

2. Synchronizing estrus • Methods • Luteolysis • Destroy corpus luteum • Beef • Dairy • Progestagen • Artificial corpus luteum

3. Magic Cows

4. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Magic herd of 21 cows with each cow on a different day of the cycle

5. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 0 1 2 3 4 Magic herd of 21 with each cow on a different day of the cycle 5 days later Luteal

6. Single Injection system

7. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Breed 8 9 10 11 12 13 14 One Injection Breed Estrus in 3 days Breed Luteal Breed Breed Breed Breed Breed Breed Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed

8. Double Injection System

9. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Comes into heat and Breed 11 days later Second injection 11 12 13 14 15 16 17 18 8 8 8 8 8 8 8 8 8 7 8 9 10 Comes into heat and Breed One Injection Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Estrus in 3 days Comes into heat and Breed Comes into heat and Breed Luteal Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed Comes into heat and Breed

10. Costs - Assumptions

11. Costs

12. Costs

13. Finished!