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






2. 147 days






3. 45-60 days after breeding; re-breed as required






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






5. 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)






6. Urinary calculi.






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






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






9. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






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






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






12. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






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






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






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






16. 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)






17. What helps regulate spermatogenesis?






18. Sperm is produced here






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






20. Superior genes are _______ to multiply






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






22. Days which have decreasing daylight hours

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23. 265-285 days






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






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






26. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






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






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






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






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






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






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

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33. Failure to have both testis (gonads) descend






34. (male) pushes the testes upward toward the body for warmth or protection






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






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






38. 283 days






39. Important 'landmark' during palpation






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






41. 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.






42. 114 days






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






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






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






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






47. 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.






48. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






49. 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.






50. Parturition is controlled by...







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