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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. 1-3 days






2. When are dairy cattle dehorned?






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






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. Milk ~305 days - dry 60 days prior to calving






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






7. 45-60 days after breeding; re-breed as required






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






9. Sperm production






10. Urinary calculi.






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






12. Luteolysis happens because of the ____________ hormone






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






14. 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)






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






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






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






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






19. Birthing process (termination of gestation)






20. 14-19 (17) days






21. (FSH) causes egg to mature in females






22. Scar tissue plugs up chambers of udder






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






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






25. Failure to have both testis (gonads) descend






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






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






28. 336 days






29. 14-19 (17) days






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






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






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






33. 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.






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






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






36. Days which have decreasing daylight hours

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37. 1-3 days






38. 24 hours before end of estrus cycle






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






40. 10-37 (21) days






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






42. What helps regulate spermatogenesis?






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






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






45. Superior genes are _______ to multiply






46. Duct through penis that carries sperm and urine






47. 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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48. (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






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






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







Sorry!:) No result found.

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