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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. 10-37 (21) days






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






3. When are dairy cattle dehorned?






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






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






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






7. Produce testosterone. located between the seminiferous tubules






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






9. Failure to have both testis (gonads) descend






10. 24 hours before end of estrus cycle






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






12. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






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






14. Luteolysis happens because of the ____________ hormone






15. (LH) causes female's egg to break (her period)






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






17. 30 hours after estrus begins






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






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






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






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






22. 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






23. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






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






25. Why Dairy calves are fed powdered milk.






26. (LH) causes female's egg to break (her period)






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






28. Animal which has been castrated after puberty






29. 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)






30. Parturition is controlled by...






31. 26 hours after estrus begins






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






33. 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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34. FEED






35. Days which have decreasing daylight hours

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36. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






37. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






38. FEED






39. When are steers and heifers weaned from bottle feeding?






40. Urinary calculi.






41. 16-20 hours






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






43. 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)






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






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






46. 2 month growth cycle. stored in the epididymis of the bull






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






48. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






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






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