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






2. 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.






3. Produce testosterone. located between the seminiferous tubules






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






5. Superior genes are _______ to multiply






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






7. Luteolysis happens because of the ____________ hormone






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






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






10. Provide nourishment for the developing sperm






11. To remove/separate testicles from animal's body before animal reaches puberty






12. 14-19 (17) days






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






14. 19-23 (21) days






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






16. Urinary calculi.






17. Allows extension of penis without fibro-elastic penis






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






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






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






21. Male on one pin and female on other side






22. 114 days






23. Sperm production






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






25. 1-2 days






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






27. 283 days






28. 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






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






30. Why does estrus happen before ovulation?






31. What helps regulate spermatogenesis?






32. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






33. Depository for semen during insemination. where urine leaves the body






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






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






36. Duct through penis that carries sperm and urine






37. 16-20 hours






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






39. 265-285 days






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






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






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






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






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






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






46. Days which have increasing daylight hours

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47. To remove/separate testicles from animal's body before animal reaches puberty






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






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






50. Days which have decreasing daylight hours

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