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Animal Reproduction

Animal Reproduction. Biology Agriculture. Reproductive System. Ovaries Female reproductive gland in which eggs are formed and hormones are produced. Testes Male reproductive gland that produces sperm and testosterone. Reproductive System. Female Reproductive Cell EGG (OVULE)

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Animal Reproduction

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  1. Animal Reproduction Biology Agriculture

  2. Reproductive System • Ovaries • Female reproductive gland in which eggs are formed and hormones are produced. • Testes • Male reproductive gland that produces sperm and testosterone.

  3. Reproductive System • Female Reproductive Cell • EGG (OVULE) • Male Reproductive Cell • SPERM • Semen - the fluid that carries sperm

  4. Reproductive System • Production of sperm is called SPERMATOGENESIS • Production of eggs is called OOGENESIS

  5. Reproductive System • Zygote • Cell formed by the union of egg and sperm at fertilization. • Embryo • Organism in early stages of development. • Pregnancy • carrying a fetus • Fertilization • the union of the egg and sperm nuclei

  6. Reproductive System • Conception • occurrence of fertilization • Ovulation • release of an ovule from the female. • Gestation • the time from fertilization or conception of a female until she gives birth

  7. Reproductive System • Vulva -opening of reproductive tract

  8. Reproductive System • Vagina - channel for birth and copulation

  9. Reproductive System • Cervix - divides vagina and uterus

  10. Reproductive System • Uterus - provides nourishment for fetus

  11. Reproductive System • Horns of Uterus - where fetus grows

  12. Reproductive System • Fallopian Tube - where fertilization occurs

  13. Reproductive System • Ovaries - produces eggs and hormones

  14. Reproductive System • Testes - produce sperm and testosterone

  15. Reproductive System • Epididymis - collects and stores sperm

  16. Reproductive System • Vas deferens - transports sperm

  17. Reproductive System • Penis - places sperm in female

  18. Reproductive System • Scrotum - protects testes, maintains temp

  19. Reproductive System • Sheath - opening of reproductive tract

  20. Animal Reproduction • Ovaries – produces eggs and hormones

  21. Animal Reproduction • The ovaries are stimulated by a hormone called the follicle stimulating hormones (FSH) and produce a FOLLICLE where the egg (ovum) grows and matures

  22. Animal Reproduction • When the egg matures the follicle ruptures and releases the egg - OVULATION

  23. Animal Reproduction

  24. Mating Process • Around the time of ovulation estrogen causes estrus or heat • The time that the female will allow the male to mate with her • Males seek out females that are in estrus

  25. Mating Process • During mating millions of sperm are deposited in the female vagina. • Sperm moves by using their tails in a whiplike action – motile

  26. Mating Process • Sperm travels from the vagina through the cervix and uterus and into the fallopian tubes • Sperm and egg unit in the fallopian tube

  27. Reproductive Technologies • Reproductive Technologies • Any method of reproduction that is different from natural methods

  28. Reproductive Technologies • Embryo Transfer: • The transfer of fertilized egg(s) from a donor female to one or more recipient females

  29. Reproductive Technologies • Embryo Transfer

  30. Reproductive Technologies • Embryo Transfer

  31. Reproductive Technologies • Super Ovulation: • Giving animals a hormone that causes them to produce more then one egg.

  32. Reproductive Technologies • Artificial Insemination • Placing sperm into the female reproductive tract by means other than natural mating.

  33. Reproductive Problems • Sterility: • Inability of an animal to reproduce • Freemartin: • In twins, when a female is exposed to male testosterone before birth. • Causes problems with the development of female reproductive organs

  34. Reproductive Practices • Purebreeding • Breeding two pure breed animals together • Usually papered to prove genetics • Crossbreeding • One breed is breed to another • Ex. Angus x Herford = Black Baldy

  35. Reproductive Practices • Grading-up • Taking grade cows and breeding to purebreds

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