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






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






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






4. 147 days






5. Provide nourishment for the developing sperm






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






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

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8. 19-23 (21) days






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






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






11. (FSH) causes egg to mature in females






12. 1-2 days






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






14. 4-6 days






15. ~305 days (altough often longer due to breeding difficulties)






16. 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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17. 1-3 days






18. Why does estrus happen before ovulation?






19. Birthing process (termination of gestation)






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






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






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






23. 147 days






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






25. 30 hours after estrus begins






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






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






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






29. Allows extension of penis without fibro-elastic penis






30. 45-60 days after breeding; re-breed as required






31. 1-2 days






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






33. (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






34. Important 'landmark' during palpation






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






36. Parturition is controlled by...






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






38. 2 month growth cycle. stored in the epididymis of the bull






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






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






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






42. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






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






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






45. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






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






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






48. 4-6 days






49. ~305 days (altough often longer due to breeding difficulties)






50. Animal which has been castrated after puberty