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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. Sperm is produced here






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






3. Allows extension of penis without fibro-elastic penis






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






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






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






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






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






9. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






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






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






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






13. Parturition is controlled by...






14. 1-2 days






15. Scar tissue plugs up chambers of udder






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






17. Duct through penis that carries sperm and urine






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






19. Failure to have both testis (gonads) descend






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






21. 147 days






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






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






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






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






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






27. FEED






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






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






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






31. Days which have increasing daylight hours


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






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






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






35. 2 month growth cycle. stored in the epididymis of the bull






36. 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.






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






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






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






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


41. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






42. 1-3 days






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






44. Why Dairy calves are fed powdered milk.






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






46. When are steers and heifers weaned from bottle feeding?






47. Duct through penis that carries sperm and urine






48. Important 'landmark' during palpation






49. FEED






50. Provide nourishment for the developing sperm