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






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






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






4. 4-6 days






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






6. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






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






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






9. Allows extension of penis without fibro-elastic penis






10. Provide nourishment for the developing sperm






11. 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






12. Milk is 15% ________ and 85% __________.






13. Days which have increasing daylight hours

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






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






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






17. ~60 days before calving






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






19. 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.






20. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






21. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






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






23. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






24. (male) pushes the testes outward toward the legs for a cool-down off of the body






25. Days which have increasing daylight hours

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26. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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






28. Parturition is controlled by...






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






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






31. Produce testosterone. located between the seminiferous tubules






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






33. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






34. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






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






36. Microscopic - make sure not sterile - very few bulls are actually tested






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






38. 1-3 days






39. 16-20 hours






40. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






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






42. What helps regulate spermatogenesis?






43. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






44. 19-23 (21) days






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






46. Superior genes are _______ to multiply






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






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






49. (LH) stimulates the Leydig cells to produce testosterone






50. 336 days