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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. 1-2 days






2. 336 days






3. Why does estrus happen before ovulation?






4. Superior genes are _______ to multiply






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






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






7. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






8. 4-6 days






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






10. (FSH) causes egg to mature in females






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






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






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






14. 283 days






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






16. Why Dairy calves are fed powdered milk.






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






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






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






20. 30-38 hours after estrus cycle begins






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






22. 147 days






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






24. 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)






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






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






27. 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.






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






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

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30. Sperm production






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






32. Days which have increasing daylight hours

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






34. FEED






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






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






37. 16-20 hours






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






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






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






41. 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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42. Produce testosterone. located between the seminiferous tubules






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






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






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






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






47. What helps regulate spermatogenesis?






48. Luteolysis happens because of the ____________ hormone






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






50. 1-3 days