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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. Urinary calculi.






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






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






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






5. Urinary calculi.






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






7. Provide nourishment for the developing sperm






8. Days which have decreasing daylight hours

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9. Important 'landmark' during palpation






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






11. Scar tissue plugs up chambers of udder






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






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






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






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






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






17. Sperm production






18. 10-37 (21) days






19. Animals which have many estrous periods per year (ex: cow - sow)






20. Days which have increasing daylight hours

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21. 265-285 days






22. Duct through penis that carries sperm and urine






23. Sperm production






24. Allows extension of penis without fibro-elastic penis






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






26. 2 month growth cycle. stored in the epididymis of the bull






27. 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)






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






29. 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.






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






31. 147 days






32. 1-3 days






33. 19-23 (21) days






34. 19-23 (21) days






35. What about the sperm for a bull which has been castrated but still has testicles?






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






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






38. What about the sperm for a bull which has been castrated but still has testicles?






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






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






41. (FSH) causes egg to mature in females






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






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






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






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






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






47. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






48. 336 days






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






50. What helps regulate spermatogenesis?