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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. Allows extension of penis without fibro-elastic penis






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






3. 283 days






4. 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.






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






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. Produce testosterone. located between the seminiferous tubules






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






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






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






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






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






13. Why does estrus happen before ovulation?






14. 336 days






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






16. 114 days






17. 19-23 (21) days






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






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






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






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






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






23. Male on one pin and female on other side






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






25. (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






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






27. Animal which has been castrated after puberty






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






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






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






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






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






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






34. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






35. When are dairy cattle dehorned?






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






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






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






39. 4-6 days






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






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






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






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






44. Scar tissue plugs up chambers of udder






45. 114 days






46. 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.






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






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






49. 19-23 (21) days






50. 147 days