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






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






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






4. Scar tissue plugs up chambers of udder






5. ~305 days (altough often longer due to breeding difficulties)






6. 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)






7. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






8. 19-23 (21) days






9. When are steers and heifers weaned from bottle feeding?






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






11. Duct through penis that carries sperm and urine






12. FEED






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






14. FEED






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






16. 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.






17. 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)






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






19. Provide nourishment for the developing sperm






20. 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.






21. Why Dairy calves are fed powdered milk.






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






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






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






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






26. 10-37 (21) days






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






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






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






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






31. 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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32. Depository for semen during insemination. where urine leaves the body






33. Parturition is controlled by...






34. Larger the cow - more milk is produced; smaller the cow - less milk is produced






35. 336 days






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






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






38. Sperm production






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






40. 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






41. (LH) stimulates the Leydig cells to produce testosterone






42. Prevent the cow from getting an infection from the calve






43. Superior genes are _______ to multiply






44. When are dairy cattle dehorned?






45. Scar tissue plugs up chambers of udder






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






47. 2 month growth cycle. stored in the epididymis of the bull






48. 30 hours after estrus begins






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






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