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






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






3. 283 days






4. Duct through penis that carries sperm and urine






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






6. ~60 days before calving






7. Days which have decreasing daylight hours

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8. 336 days






9. Can survive ~7 days in cow. vast majority <48 hours






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






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






12. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






13. Can survive ~7 days in cow. vast majority <48 hours






14. Allows extension of penis without fibro-elastic penis






15. (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






16. 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






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






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






19. (FSH) causes egg to mature in females






20. Birthing process (termination of gestation)






21. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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22. 147 days






23. Milk is 15% ________ and 85% __________.






24. 45-60 days after breeding; re-breed as required






25. Days which have decreasing daylight hours

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26. Sperm production






27. FEED






28. Why Dairy calves are fed powdered milk.






29. Failure to have both testis (gonads) descend






30. Days which have increasing daylight hours

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31. Implies the amount of estrogen production






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






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






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






35. 1-3 days






36. When are steers and heifers weaned from bottle feeding?






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






38. Parturition is controlled by...






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






40. Allows extension of penis without fibro-elastic penis






41. Produce testosterone. located between the seminiferous tubules






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






43. 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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44. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






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






46. 16-20 hours






47. 16-20 hours






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






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






50. Scar tissue plugs up chambers of udder