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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. (LH) causes female's egg to break (her period)






2. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






3. Sperm is produced here






4. Important 'landmark' during palpation






5. Provide nourishment for the developing sperm






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






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






8. Parturition is controlled by...






9. 19-23 (21) days






10. Depository for semen during insemination. where urine leaves the body






11. The more stressed out the male is - the less sperm he is going to produce






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






13. 1-2 days






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






15. (male) pushes the testes outward toward the legs for a cool-down off of the body






16. Implies the amount of estrogen production






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






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






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






20. 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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21. Produce testosterone. located between the seminiferous tubules






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






23. 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.






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






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






26. Superior genes are _______ to multiply






27. 336 days






28. 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.






29. (male) pushes the testes upward toward the body for warmth or protection






30. Failure to have both testis (gonads) descend






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






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






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






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






35. (LH) causes female's egg to break (her period)






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






37. 147 days






38. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






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






40. Depository for semen during insemination. where urine leaves the body






41. Why Dairy calves are fed powdered milk.






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






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






44. 30 hours after estrus begins






45. 26 hours after estrus begins






46. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






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






48. Luteolysis happens because of the ____________ hormone






49. FEED






50. 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)