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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. Why Dairy calves are fed powdered milk.






2. 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






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






4. 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






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






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






7. Urinary calculi.






8. 147 days






9. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






10. Why Dairy calves are fed powdered milk.






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






12. 45-60 days after breeding; re-breed as required






13. 24 hours before end of estrus cycle






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






15. 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)






16. Sperm is produced here






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






18. Implies the amount of estrogen production






19. Duct through penis that carries sperm and urine






20. 10-37 (21) days






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






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






23. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






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






27. 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)






28. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






29. 19-23 (21) days






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






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






32. Parturition is controlled by...






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






34. Important 'landmark' during palpation






35. Days which have decreasing daylight hours

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






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






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






39. Important 'landmark' during palpation






40. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






41. Superior genes are _______ to multiply






42. 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.






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






44. 24 hours before end of estrus cycle






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






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






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






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






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






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