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






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






3. Provide nourishment for the developing sperm






4. Actual heat cycle (period)






5. Parturition is controlled by...






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






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






8. Actual heat cycle (period)






9. 283 days






10. 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.






11. FEED






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






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






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






15. Failure to have both testis (gonads) descend






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






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






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






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






20. 1-2 days






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






22. Animals which have many estrous periods per year (ex: cow - sow)






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






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






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






26. 30 hours after estrus begins






27. Animals which have only one estrous cycle (ex: dog - fox)






28. Animals which have only one estrous cycle (ex: dog - fox)






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






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






31. Superior genes are _______ to multiply






32. Scar tissue plugs up chambers of udder






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






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

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






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






37. ~305 days (altough often longer due to breeding difficulties)






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






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






40. 30-38 hours after estrus cycle begins






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






42. 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






43. 147 days






44. 16-20 hours






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






46. 147 days






47. 336 days






48. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






49. Male on one pin and female on other side






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