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






2. Sperm is produced here






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






4. 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)






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






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






7. 1-2 days






8. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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






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






11. 30 hours after estrus begins






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






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






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






15. Produce testosterone. located between the seminiferous tubules






16. Why does estrus happen before ovulation?






17. Days which have decreasing daylight hours

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18. FEED






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






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






21. Way to know everything is alright with the breeding male






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






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






24. 14-19 (17) days






25. Sperm production






26. Duct through penis that carries sperm and urine






27. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






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






29. (FSH) causes egg to mature in females






30. 147 days






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






32. Way to know everything is alright with the breeding male






33. 14-19 (17) days






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






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






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






37. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






38. 1-3 days






39. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






40. 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.






41. ~305 days (altough often longer due to breeding difficulties)






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






43. 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.






44. 30-38 hours after estrus cycle begins






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






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






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






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






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






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