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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. Parturition is controlled by...






2. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






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

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






5. Provide nourishment for the developing sperm






6. 114 days






7. 24 hours before end of estrus cycle






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






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






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






12. 265-285 days






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






14. Sperm production






15. Scar tissue plugs up chambers of udder






16. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






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






18. 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






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






20. 16-20 hours






21. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






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






23. (FSH) causes egg to mature in females






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






25. Implies the amount of estrogen production






26. Parturition is controlled by...






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






28. 14-19 (17) days






29. 1-3 days






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






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






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






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






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






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






36. (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






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






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






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






40. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






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






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






43. 19-23 (21) days






44. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






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






46. 24 hours before end of estrus cycle






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






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






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






50. Why Dairy calves are fed powdered milk.