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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. Provide nourishment for the developing sperm






2. Failure to have both testis (gonads) descend






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






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






5. FEED






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






7. When are dairy cattle dehorned?






8. 336 days






9. 1-3 days






10. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






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






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. Duct through penis that carries sperm and urine






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






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






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






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






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






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






20. 2 month growth cycle. stored in the epididymis of the bull






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






22. Superior genes are _______ to multiply






23. 10-37 (21) days






24. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






25. Parturition is controlled by...






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






27. Why does estrus happen before ovulation?






28. 30 hours after estrus begins






29. 4-6 days






30. Luteolysis happens because of the ____________ hormone






31. 1-2 days






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






33. Scar tissue plugs up chambers of udder






34. Scar tissue plugs up chambers of udder






35. 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.






36. 14-19 (17) days






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






38. 45-60 days after breeding; re-breed as required






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






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






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






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






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






44. Produce testosterone. located between the seminiferous tubules






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






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






47. 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)






48. Actual heat cycle (period)






49. Male on one pin and female on other side






50. 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.