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






2. 30-38 hours after estrus cycle begins






3. 16-20 hours






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






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






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






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






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






9. FEED






10. 4-6 days






11. Animal which has been castrated after puberty






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






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






14. 30 hours after estrus begins






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






16. Urinary calculi.






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






18. Why Dairy calves are fed powdered milk.






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






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






21. 19-23 (21) days






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






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






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






25. 45-60 days after breeding; re-breed as required






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






27. Allows extension of penis without fibro-elastic penis






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






29. 26 hours after estrus begins






30. 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)






31. Urinary calculi.






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






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






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






35. (FSH) causes egg to mature in females






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






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






38. When are dairy cattle dehorned?






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






40. 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






41. Parturition is controlled by...






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






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






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






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






46. 19-23 (21) days






47. 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)






48. 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.






49. 2 month growth cycle. stored in the epididymis of the bull






50. Days which have increasing daylight hours

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