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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. 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.






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






3. Parturition is controlled by...






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






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






6. 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.






7. Important 'landmark' during palpation






8. What helps regulate spermatogenesis?






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






10. Days which have increasing daylight hours

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






12. 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






13. 30 hours after estrus begins






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






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






16. Parturition is controlled by...






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






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






19. Why Dairy calves are fed powdered milk.






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






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






22. (LH) causes female's egg to break (her period)






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






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






25. 26 hours after estrus begins






26. Superior genes are _______ to multiply






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






28. Birthing process (termination of gestation)






29. (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






30. Superior genes are _______ to multiply






31. Sperm production






32. Why does estrus happen before ovulation?






33. 16-20 hours






34. Actual heat cycle (period)






35. Sperm is produced here






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






37. 4-6 days






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






39. 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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40. Milk ~305 days - dry 60 days prior to calving






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






42. 265-285 days






43. When are dairy cattle dehorned?






44. Scar tissue plugs up chambers of udder






45. FEED






46. 1-3 days






47. 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.






48. 30-38 hours after estrus cycle begins






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






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