O slideshow foi denunciado.
Utilizamos seu perfil e dados de atividades no LinkedIn para personalizar e exibir anúncios mais relevantes. Altere suas preferências de anúncios quando desejar.

Pregnancy and parturition

8.688 visualizações

Publicada em

This presentation outlines the vocabulary associated with livestock reproduction, specifically during pregnancy. It also outlines a human's developmental milestones in the womb.

  • If you are looking for customer-oriented academic and research paper writing service try ⇒⇒⇒ WRITE-MY-PAPER.net ⇐⇐⇐ liked them A LOTTT Really nice solutions for the last-day papers
       Responder 
    Tem certeza que deseja  Sim  Não
    Insira sua mensagem aqui
  • What will you do with your winnings? An extra £3,000 per week goes a very long way... And of course WE DO ALL THE WORK FOR YOU. When we know EXACTLY how you should bet, we pass that information onto you and then you make money. It really is that easy! From just two minutes betting each morning you'll be making more than £400 every single day! ✄✄✄ https://url.cn/gjzSn2x2
       Responder 
    Tem certeza que deseja  Sim  Não
    Insira sua mensagem aqui

Pregnancy and parturition

  1. 1. Pregnancy and Parturition
  2. 2. Pregnancy begins with <ul><ul><li>Fertilization – the union of sperm and ovum </li></ul></ul><ul><ul><li>Creates a zygote </li></ul></ul>
  3. 3. 24 hours <ul><li>Zona locks out all other sperm </li></ul><ul><li>Sperm DNA and egg DNA combine </li></ul><ul><li>Cell divides </li></ul>
  4. 4. 8 celled pig zygotes
  5. 5. Day 5 <ul><li>Arrive in the uterus </li></ul><ul><li>About 100 cells </li></ul><ul><li>Called a blastisist </li></ul>
  6. 6. Day 6 <ul><li>Break out of Zona </li></ul><ul><li>Suppresses Mother’s immune system in the uterus </li></ul><ul><li>Attaches to uterine wall </li></ul><ul><li>Begin to form placenta </li></ul><ul><li>Placenta is the membrane that surrounds and supports the embryo inside the uterus </li></ul>
  7. 7. Week 2 <ul><li>Blastisist is the size of a poppy seed </li></ul><ul><li>Gasterlation begins – forms 3 layers of cells </li></ul><ul><ul><li>lungs, liver, digestion </li></ul></ul><ul><ul><li>heart, muscles, bones, blood </li></ul></ul><ul><ul><li>central nervous system, skin, hair </li></ul></ul><ul><li>Embryo </li></ul>
  8. 8. Week 3 <ul><li>Form a neural tube </li></ul><ul><li>Brain begins to form </li></ul><ul><li>Blood vessels connect </li></ul><ul><li>Heart begins to beat </li></ul><ul><li>Backbone begins to form </li></ul>
  9. 9. Week 4 <ul><li>Arm buds develop </li></ul><ul><li>Backbone curls into a tail </li></ul><ul><li>1/5 inch long </li></ul>
  10. 10. Week 5 <ul><li>Retina and lens form </li></ul><ul><li>Ear begins to form </li></ul><ul><li>1/4 inch long </li></ul>
  11. 11. Growth of Embryo <ul><li>Week 6 - 5/8 inch long </li></ul><ul><li>Week 7 - 3/4 inch long </li></ul><ul><li>Week 8 - 1 inch long </li></ul><ul><li>Week 9 - 1 1/2 inch long </li></ul><ul><li>Week 12 - 3 inches long </li></ul><ul><li>Week 16 - 5 inches long </li></ul>
  12. 12. Milestones of the embryo <ul><li>Month 4 - Hard bone begins to form </li></ul><ul><li>Month 5 - Fetus can hear sound </li></ul><ul><li>Month 7 - Fetus begins to lay down fat deposits under skin and in brain </li></ul>
  13. 13. Gestation <ul><li>period of pregnancy </li></ul><ul><li>Lengths of Gestation in livestock </li></ul><ul><li>Cow 285 days </li></ul><ul><li>Sow 114 days </li></ul><ul><li>Mare 336 days </li></ul><ul><li>Ewe 147 day </li></ul>
  14. 14. Parturition <ul><ul><li>birth of the fetus </li></ul></ul><ul><ul><li>Begins with the release of cortisol </li></ul></ul><ul><ul><li>Cervix relaxes and dilates </li></ul></ul><ul><ul><li>Oxytocin and estrogen are released to begin labor and milk production </li></ul></ul>
  15. 15. Parturition (cont) <ul><ul><li>Contractions of the uterus push the fetus through the cervix and down the birth canal out in to the world </li></ul></ul><ul><ul><li>Fetus must fine the path of least resistance through the pelvic bones </li></ul></ul><ul><ul><li>The normal presentation for lambs, calves, and foals is front feet first with the head tucked between </li></ul></ul>
  16. 16. Problems <ul><ul><li>Wrong presentation of fetus </li></ul></ul><ul><li>Too small pelvic area </li></ul><ul><li>Too large fetus </li></ul><ul><li>Placenta does not break </li></ul><ul><li>Mother does not come to milk </li></ul>
  17. 18. After Parturition <ul><li>Afterbirth – the uterus releases the placenta, and it passes out shortly after the fetus is born. ** Retained placenta </li></ul><ul><li>Lactation – mother making milk for baby </li></ul><ul><li>Colostrum – mother’s first milk that contains antibodies for the baby; foals die without it, so horse breeders milk mares and freeze it. </li></ul>
  18. 19. 28 day pig embryo

×