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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. Important 'landmark' during palpation






2. 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)






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






5. Scar tissue plugs up chambers of udder






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






7. 19-23 (21) days






8. 26 hours after estrus begins






9. 19-23 (21) days






10. 4-6 days






11. 4-6 days






12. 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)






13. Sperm is produced here






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






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






16. 265-285 days






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






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






19. Help to signal hormone levels which we need both in the brain right next to each other.






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






21. Implies the amount of estrogen production






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






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






24. 1-2 days






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






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






27. Failure to have both testis (gonads) descend






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






29. 30 hours after estrus begins






30. 26 hours after estrus begins






31. What helps regulate spermatogenesis?






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






33. FEED






34. When are dairy cattle dehorned?






35. Sperm production






36. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






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






38. 10-37 (21) days






39. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






40. 2 month growth cycle. stored in the epididymis of the bull






41. Sperm production






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






43. Superior genes are _______ to multiply






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






45. Important 'landmark' during palpation






46. To remove/separate testicles from animal's body before animal reaches puberty






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






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






49. When are dairy cattle dehorned?






50. Why does estrus happen before ovulation?