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






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






3. Sperm production






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






5. 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






6. 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






7. What helps regulate spermatogenesis?






8. 1-3 days






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






10. Sperm is produced here






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






12. Prevent the cow from getting an infection from the calve






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






14. 147 days






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






16. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






17. Days which have decreasing daylight hours

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18. Scar tissue plugs up chambers of udder






19. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






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






21. 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






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






23. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






24. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






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






26. 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)






27. 2 month growth cycle. stored in the epididymis of the bull






28. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






29. Contains and regulates the temp of the testes for sperm production






30. 1. brain function - 2. blood flow - 3. willing female






31. Provide nourishment for the developing sperm






32. 16-20 hours






33. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






34. 26 hours after estrus begins






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






36. Animal which has been castrated after puberty






37. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






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






39. 114 days






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






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






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






43. Birthing process (termination of gestation)






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






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






46. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






47. Why does estrus happen before ovulation?






48. 10-37 (21) days






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






50. 265-285 days