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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. 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






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






3. Failure to have both testis (gonads) descend






4. 1-3 days






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






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






7. 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






8. 26 hours after estrus begins






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






10. 45-60 days after breeding; re-breed as required






11. Sperm is produced here






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






13. Superior genes are _______ to multiply






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






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






16. 2 month growth cycle. stored in the epididymis of the bull






17. Male on one pin and female on other side






18. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






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






20. (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






21. Luteolysis happens because of the ____________ hormone






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






23. 1-2 days






24. 16-20 hours






25. 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.






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






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






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






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






30. Scar tissue plugs up chambers of udder






31. 265-285 days






32. 24 hours before end of estrus cycle






33. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






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






35. Animal which has been castrated after puberty






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






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






38. 4-6 days






39. Superior genes are _______ to multiply






40. Animal which has been castrated after puberty






41. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






42. 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.






43. Days which have increasing daylight hours

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






45. 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)






46. What helps regulate spermatogenesis?






47. 26 hours after estrus begins






48. 1. brain function - 2. blood flow - 3. willing female






49. 283 days






50. Important 'landmark' during palpation