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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. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






2. 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.






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






4. 16-20 hours






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






6. Birthing process (termination of gestation)






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






8. Urinary calculi.






9. 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)






10. 147 days






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






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






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






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






16. 24 hours before end of estrus cycle






17. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






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






19. 283 days






20. FEED






21. 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.






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






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






24. 265-285 days






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






26. 19-23 (21) days






27. 1-3 days






28. Male on one pin and female on other side






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






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






31. What helps regulate spermatogenesis?






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






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






34. 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.






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






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






38. Provide nourishment for the developing sperm






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






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






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






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






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






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






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






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






47. Provide nourishment for the developing sperm






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






49. 14-19 (17) days






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