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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. (LH) stimulates the Leydig cells to produce testosterone






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






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






4. 24 hours before end of estrus cycle






5. Scar tissue plugs up chambers of udder






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






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






8. Parturition is controlled by...






9. 283 days






10. Male on one pin and female on other side






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






12. Birthing process (termination of gestation)






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






14. 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






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






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






17. (FSH) causes egg to mature in females






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






19. Duct through penis that carries sperm and urine






20. Why does estrus happen before ovulation?






21. Sperm production






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






23. 14-19 (17) days






24. 2 month growth cycle. stored in the epididymis of the bull






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






26. ~305 days (altough often longer due to breeding difficulties)






27. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






28. 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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29. Failure to have both testis (gonads) descend






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






31. Sperm is produced here






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






33. Animal which has been castrated after puberty






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






35. 30 hours after estrus begins






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






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






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






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






40. 45-60 days after breeding; re-breed as required






41. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






42. Days which have decreasing daylight hours

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






44. Why Dairy calves are fed powdered milk.






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






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






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






48. Luteolysis happens because of the ____________ hormone






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






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