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






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






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






4. (FSH) causes egg to mature in females






5. Allows extension of penis without fibro-elastic penis






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






7. Duct through penis that carries sperm and urine






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






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






10. 10-37 (21) days






11. 265-285 days






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






13. Why does estrus happen before ovulation?






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






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






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






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






18. 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






19. Provide nourishment for the developing sperm






20. Days which have increasing daylight hours

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21. Urinary calculi.






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






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






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






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






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






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






28. 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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29. Animals which have only one estrous cycle (ex: dog - fox)






30. Important 'landmark' during palpation






31. 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.






32. Male on one pin and female on other side






33. 30 hours after estrus begins






34. 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






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






36. Failure to have both testis (gonads) descend






37. (LH) causes female's egg to break (her period)






38. Luteolysis happens because of the ____________ hormone






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






40. Sperm is produced here






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






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






43. Actual heat cycle (period)






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






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






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






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






48. Implies the amount of estrogen production






49. 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.






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