Estrus web

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Estrus web

  1. 1. Canine Estrous Cycle Click and wait for everything to happen.
  2. 2. Canine Estrus
  3. 3. NormalPhysiology Review
  4. 4. Brain Anatomy HypothalamusAnteriorpituitary Uterine horns Ovaries Cervix Vagina/ Uterine vestibule body
  5. 5. Estrogen FollicularProestrus FSH growth:GnRH Proestrus FSH and Estrus
  6. 6. Ovulation - Estrogen Pregnancy/ GnRH LH LH Ovulation Diestrus LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LHLH LHCorpus luteum LH LH LH LH Progesterone
  7. 7. Proestrus 9 daysAnestrus Estrus 90 days 9 days Pregnancy/Diestrus 60 days
  8. 8. Estrogen FollicularProestrus FSH growth:GnRH Proestrus FSH and Estrus Proestrus 1 2 3 4 5 6 7 8 9
  9. 9. Estrogen Ovulation - GnRH Ovulation Estrus Ovulation over 24 hours LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LHLH LH LH Progesterone initial LH rise starts with LHCorpora lutea LH LH LH LH peak and rises during LH Surge estrus (not diestrus) Progesterone Proestrus Estrus 1 2 3 4 5 6 7 8 91 2 3 4 5 6 7 8 9
  10. 10. LH Metaphase Metaphase II LHLH LH II and polar secondary LH LH LH body oocyte with extrusion 24 polar body hours Ovulation LH Surge 24 hours Estrus1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
  11. 11. Reduction Division Ovulation LH Surge Eggs ready for fertilization Fertile period = 3-6 days post LH LH = day 0 Estrus1 2 3 4 5 6 7 8 9
  12. 12. You are done!

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