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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. Failure to have both testis (gonads) descend






2. 265-285 days






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






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






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






6. Provide nourishment for the developing sperm






7. 19-23 (21) days






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






9. 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.






10. 283 days






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






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






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






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






15. Days which have increasing daylight hours

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






17. 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.






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






19. Failure to have both testis (gonads) descend






20. What helps regulate spermatogenesis?






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






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






23. (FSH) causes egg to mature in females






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






25. 30-38 hours after estrus cycle begins






26. 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






27. Male on one pin and female on other side






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






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






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






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






32. Why Dairy calves are fed powdered milk.






33. 45-60 days after breeding; re-breed as required






34. 19-23 (21) days






35. 336 days






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






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






38. Actual heat cycle (period)






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






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






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






42. Birthing process (termination of gestation)






43. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






44. 1. brain function - 2. blood flow - 3. willing female






45. 283 days






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






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






48. 24 hours before end of estrus cycle






49. ~305 days (altough often longer due to breeding difficulties)






50. 14-19 (17) days