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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 30-38 hours after estrus cycle begins






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






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






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






5. 19-23 (21) days






6. 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






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






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






9. Prevent the cow from getting an infection from the calve






10. 147 days






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






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






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






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






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






16. 1-2 days






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






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






19. Sperm production






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






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






22. Prevent the cow from getting an infection from the calve






23. Superior genes are _______ to multiply






24. Male on one pin and female on other side






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

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26. (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






27. 2 month growth cycle. stored in the epididymis of the bull






28. 10-37 (21) days






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






30. Start of the reproductive tract for the female. located outside of the body






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






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






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






34. Superior genes are _______ to multiply






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






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






37. 45-60 days after breeding; re-breed as required






38. 114 days






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






40. What helps regulate spermatogenesis?






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






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






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






45. 19-23 (21) days






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






47. Days which have increasing daylight hours

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






49. Animal which has been castrated after puberty






50. What makes the milk flow through the mammary glands?







Sorry!:) No result found.

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