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






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






4. 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.






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






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






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






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






9. Animal which has been castrated after puberty






10. 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






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






12. (FSH) causes egg to mature in females






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






14. 336 days






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






16. 10-37 (21) days






17. ~305 days (altough often longer due to breeding difficulties)






18. Superior genes are _______ to multiply






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






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






21. Duct through penis that carries sperm and urine






22. Scar tissue plugs up chambers of udder






23. Sperm production






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






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






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






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






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






29. What makes the milk flow through the mammary glands?






30. Sperm production






31. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






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






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






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






35. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






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






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






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






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






40. (FSH) causes egg to mature in females






41. 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.






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






43. Days which have decreasing daylight hours

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44. Days which have decreasing daylight hours

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






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






47. Actual heat cycle (period)






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






49. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






50. ~305 days (altough often longer due to breeding difficulties)