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






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






3. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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4. 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.






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






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






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






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






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






10. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






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






12. 19-23 (21) days






13. ~305 days (altough often longer due to breeding difficulties)






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






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






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






17. Failure to have both testis (gonads) descend






18. 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)






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






20. Urinary calculi.






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






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






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






24. 26 hours after estrus begins






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






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






27. Superior genes are _______ to multiply






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






29. Provide nourishment for the developing sperm






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






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






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






33. Actual heat cycle (period)






34. Superior genes are _______ to multiply






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






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






37. Why Dairy calves are fed powdered milk.






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






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






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






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






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






43. Urinary calculi.






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






45. What about the sperm for a bull which has been castrated but still has testicles?






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






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






49. 4-6 days






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