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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (LH) causes female's egg to break (her period)






2. 265-285 days






3. Start of the reproductive tract for the female. located outside of the body






4. Not under a timeline - cow can not be sold as steak






5. (FSH) causes egg to mature in females






6. Front feet and head first. (except for hogs and dogs)






7. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






8. 283 days






9. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






10. Can survive ~7 days in cow. vast majority <48 hours






11. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






12. 45-60 days after breeding; re-breed as required






13. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






14. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






15. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






16. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






17. Produce testosterone. located between the seminiferous tubules






18. Parturition is controlled by...






19. 2 month growth cycle. stored in the epididymis of the bull






20. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






21. Days which have decreasing daylight hours

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22. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






23. Help to signal hormone levels which we need both in the brain right next to each other.






24. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






25. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






26. FEED






27. Look for infection - split - and rupture of the penis






28. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






29. 16-20 hours






30. Animal which has been castrated after puberty






31. Birthing process (termination of gestation)






32. 14-19 (17) days






33. Days which have increasing daylight hours

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34. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






35. 147 days






36. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






37. (LH) causes female's egg to break (her period)






38. Allows extension of penis without fibro-elastic penis






39. To remove/separate testicles from animal's body before animal reaches puberty






40. Sperm is produced here






41. Check feet and legs - look for masculine traits in build such as crest and muscling






42. Luteolysis happens because of the ____________ hormone






43. 114 days






44. Larger the cow - more milk is produced; smaller the cow - less milk is produced






45. Why Dairy calves are fed powdered milk.






46. Animals which have many estrous periods per year (ex: cow - sow)






47. Duct through penis that carries sperm and urine






48. Male on one pin and female on other side






49. Animals which have only one estrous cycle (ex: dog - fox)






50. 10-37 (21) days