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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 147 days






2. Birthing process (termination of gestation)






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






4. Provide nourishment for the developing sperm






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

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6. (switzerland) 2nd in size and milk production - most muscle -






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






8. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






9. ~60 days before calving






10. Produce testosterone. located between the seminiferous tubules






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






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






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






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






15. 336 days






16. 4-6 days






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






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






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






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






21. 30 hours after estrus begins






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






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






24. Scar tissue plugs up chambers of udder






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






26. 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.






27. 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.






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






29. When are dairy cattle dehorned?






30. Why Dairy calves are fed powdered milk.






31. 45-60 days after breeding; re-breed as required






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






33. Why does estrus happen before ovulation?






34. Provide nourishment for the developing sperm






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






36. 1-3 days






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






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






39. Implies the amount of estrogen production






40. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






41. Days which have increasing daylight hours

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






43. 14-19 (17) days






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






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






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






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






48. To remove/separate testicles from animal's body before animal reaches puberty






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






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