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  1. The Ninth Month Story Downloaded off National Website Author Unknown Modified by the GA Agriculture Education Curriculum July 2002

  2. The Bovine Reproductive Tract

  3. Uterine Horns Ovary Cervix Vagina

  4. Importance of Heat Detection Cow stands to be mounted for another

  5. Follicle Produced by FSH

  6. Ovulation-Follicle About to Rupture

  7. Heat Chart

  8. ArtificialInsemination Inseminate 12 hours after standing heat.

  9. Fallopian Tube- Site of Fertilization

  10. CL (Corpus Luteum) • The CL takes the place of the follicle • Produces the hormone progesterone

  11. Fetus: 30 Days- 1 Month • 2/5”- pea sized • Head and limb buds recognizable • Placenta not attached

  12. Fetus: 60 Days- 2 Months

  13. Fetus: 60 Days – 2 Monthscont. • 6-7.5 cm • 21/2-3 in • Claw buds and small scrotum, recognizable palate, sternum closed, placenta attached, and lens sized cotyledons present

  14. Fetus: 90 Days

  15. 13-17 cm 5-61/2 in Rat size Fine hair on eyebrows Claws developed Yellow-colored epithelial Plaques present on amnion Horn pits present Fetus: 90 Days- 3 Months

  16. 12.5-18cm 5-7in Small cat size Fine hair on eyebrow Claws develop Horn pits Fetus: 120 Days

  17. 18-23 cm 7-9 in Large cat size Hair on eyebrow and lips Fetus: 150 Days

  18. 40-60 cm (15-24 in) Hair on inside of the ear, around the horn pits tip of tail, & muzzle Fetus: 180 Days

  19. 55-75 cm (22-30 in) Long hair on tip of tail Hair on the metatarsal, metacarpal and phalangeal region Fetus: 210 Days

  20. 210 days

  21. 60-85 cm ( 24-34 in) Fine short hair all over the body Incisor teeth not erupted Fetus: 240 Days

  22. 70-100 cm (28-40 in) Hair coat complete Incisor teeth erupted Fetus: 270 Days

  23. Gestation Period 280 Days

  24. Pelvis

  25. Normal Calf Position

  26. Abnormal Calf Positions

  27. First Sign of Birth • First sign of birth is indicated by the presence of a waterbag

  28. First Sign of Calf • The first sign of the calf should be the hooves

  29. Parturition