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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. Animal which has been castrated after puberty






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






3. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






4. ~305 days (altough often longer due to breeding difficulties)






5. Failure to have one testis (gonad) to descend






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






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






8. 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.






9. Birthing process (termination of gestation)






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






11. Luteolysis happens because of the ____________ hormone






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






13. 114 days






14. Male on one pin and female on other side






15. 336 days






16. 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.






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






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. 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.






20. Urinary calculi.






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






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






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






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






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






26. 283 days






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






28. Why Dairy calves are fed powdered milk.






29. Sperm production






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






31. Produce testosterone. located between the seminiferous tubules






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






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






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






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






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






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






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






39. 30-38 hours after estrus cycle begins






40. (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






41. 26 hours after estrus begins






42. 1-3 days






43. (FSH) causes egg to mature in females






44. Superior genes are _______ to multiply






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






46. 10-37 (21) days






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






48. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






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






50. 265-285 days







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