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






2. 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






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






4. 16-20 hours






5. 30-38 hours after estrus cycle begins






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






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






8. (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






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






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






11. 265-285 days






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






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






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






15. 4-6 days






16. (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






17. (LH) stimulates the Leydig cells to produce testosterone






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






19. Important 'landmark' during palpation






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






21. 45-60 days after breeding; re-breed as required






22. Days which have increasing daylight hours

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






24. 336 days






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






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






27. 1-2 days






28. Microscopic - make sure not sterile - very few bulls are actually tested






29. 265-285 days






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






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






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






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






34. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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35. Duct through penis that carries sperm and urine






36. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






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






38. Allows extension of penis without fibro-elastic penis






39. Birthing process (termination of gestation)






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






41. Failure to have both testis (gonads) descend






42. Actual heat cycle (period)






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






44. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






45. Sperm is produced here






46. 16-20 hours






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






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






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






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