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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 under a timeline - cow can not be sold as steak






2. Why Dairy calves are fed powdered milk.






3. Why does estrus happen before ovulation?






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






5. Male on one pin and female on other side






6. Superior genes are _______ to multiply






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






8. 2 month growth cycle. stored in the epididymis of the bull






9. What helps regulate spermatogenesis?






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






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






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






13. (FSH) causes egg to mature in females






14. Implies the amount of estrogen production






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






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






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






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






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






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

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






22. Luteolysis happens because of the ____________ hormone






23. 114 days






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






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






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






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






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






29. 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)






30. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






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






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






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






34. Important 'landmark' during palpation






35. 19-23 (21) days






36. 336 days






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






38. 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






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






40. Animal which has been castrated after puberty






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






42. 24 hours before end of estrus cycle






43. Actual heat cycle (period)






44. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






45. ~60 days before calving






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






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






48. Scar tissue plugs up chambers of udder






49. Produce testosterone. located between the seminiferous tubules






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