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






2. 265-285 days






3. 19-23 (21) days






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






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






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






7. Scar tissue plugs up chambers of udder






8. Animal which has been castrated after puberty






9. Provide nourishment for the developing sperm






10. Days which have increasing daylight hours

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






12. (male) pushes the testes upward toward the body for warmth or protection






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

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






15. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






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






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






18. 30-38 hours after estrus cycle begins






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






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






21. 147 days






22. Milk is 15% ________ and 85% __________.






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






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






25. 336 days






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






27. 45-60 days after breeding; re-breed as required






28. Why does estrus happen before ovulation?






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






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






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






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






33. Male on one pin and female on other side






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






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






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






37. FEED






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






39. 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)






40. Days which have decreasing daylight hours

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






42. Help to signal hormone levels which we need both in the brain right next to each other.






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






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






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






46. 147 days






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






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






49. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






50. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.