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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. 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.






2. 16-20 hours






3. 30 hours after estrus begins






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






5. Allows extension of penis without fibro-elastic penis






6. 30 hours after estrus begins






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






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






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






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






11. 336 days






12. 14-19 (17) days






13. Days which have decreasing daylight hours

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






15. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






16. (FSH) causes egg to mature in females






17. Luteolysis happens because of the ____________ hormone






18. Prevent the cow from getting an infection from the calve






19. 1-3 days






20. Male on one pin and female on other side






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






22. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






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






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






25. 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






26. 2 month growth cycle. stored in the epididymis of the bull






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






28. Way to know everything is alright with the breeding male






29. 1-2 days






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






31. ~305 days (altough often longer due to breeding difficulties)






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






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






34. What makes the milk flow through the mammary glands?






35. 283 days






36. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






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






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






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






40. Look for infection - split - and rupture of the penis






41. 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.






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






43. Actual heat cycle (period)






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






45. When are dairy cattle dehorned?






46. FEED






47. Actual heat cycle (period)






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






49. 10-37 (21) days






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







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