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






2. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






3. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






4. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






5. Actual heat cycle (period)






6. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






7. Birthing process (termination of gestation)






8. Milk ~305 days - dry 60 days prior to calving






9. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






10. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






11. Failure to have one testis (gonad) to descend






12. Scar tissue plugs up chambers of udder






13. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






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






15. Superior genes are _______ to multiply






16. Parturition is controlled by...






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






18. 1-2 days






19. 147 days






20. ~60 days before calving






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






22. 30 hours after estrus begins






23. When are steers and heifers weaned from bottle feeding?






24. Provide nourishment for the developing sperm






25. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






26. The more stressed out the male is - the less sperm he is going to produce






27. (male) pushes the testes upward toward the body for warmth or protection






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






29. Sperm is produced here






30. What makes the milk flow through the mammary glands?






31. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






32. When are dairy cattle dehorned?






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






34. What helps regulate spermatogenesis?






35. Days which have decreasing daylight hours

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






37. 265-285 days






38. Days which have increasing daylight hours

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39. Depository for semen during insemination. where urine leaves the body






40. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






41. (switzerland) 2nd in size and milk production - most muscle -






42. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






43. 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)






44. 10-37 (21) days






45. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






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






47. 336 days






48. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






49. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






50. 2 month growth cycle. stored in the epididymis of the bull