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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. Provide nourishment for the developing sperm






2. 1-3 days






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






4. 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.






5. (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






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






7. 1-2 days






8. 265-285 days






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






10. Days which have increasing daylight hours

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11. 19-23 (21) days






12. Allows extension of penis without fibro-elastic penis






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






14. ~60 days before calving






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






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






17. Why Dairy calves are fed powdered milk.






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






19. 24 hours before end of estrus cycle






20. 14-19 (17) days






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






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






23. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






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






25. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






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






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






28. Duct through penis that carries sperm and urine






29. 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.






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






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






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






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






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






35. 14-19 (17) days






36. Why does estrus happen before ovulation?






37. Sperm production






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






39. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






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






41. 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)






42. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






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






44. Days which have decreasing daylight hours

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






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






47. ~305 days (altough often longer due to breeding difficulties)






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






49. When are dairy cattle dehorned?






50. Failure to have both testis (gonads) descend