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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. FEED






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






3. Duct through penis that carries sperm and urine






4. 26 hours after estrus begins






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






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






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






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






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






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






11. ~60 days before calving






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






13. 26 hours after estrus begins






14. ~305 days (altough often longer due to breeding difficulties)






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






16. (FSH) causes egg to mature in females






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






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






19. 114 days






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






21. 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






22. Sperm is produced here






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






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






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






26. Birthing process (termination of gestation)






27. 16-20 hours






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






29. Important 'landmark' during palpation






30. 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.






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






32. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






33. Important 'landmark' during palpation






34. Luteolysis happens because of the ____________ hormone






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






36. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






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






38. When are dairy cattle dehorned?






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






40. 1-2 days






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






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






43. Allows extension of penis without fibro-elastic penis






44. Animal which has been castrated after puberty






45. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






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






47. 14-19 (17) days






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






50. Allows extension of penis without fibro-elastic penis