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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. 114 days






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






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






4. 24 hours before end of estrus cycle






5. 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.






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






7. Why Dairy calves are fed powdered milk.






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






9. ~305 days (altough often longer due to breeding difficulties)






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






11. Why does estrus happen before ovulation?






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






13. (FSH) causes egg to mature in females






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






15. Allows extension of penis without fibro-elastic penis






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






17. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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






19. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






20. 16-20 hours






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






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






23. 45-60 days after breeding; re-breed as required






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






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






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






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






28. What helps regulate spermatogenesis?






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






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






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






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






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






34. Allows extension of penis without fibro-elastic penis






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






36. 19-23 (21) days






37. Birthing process (termination of gestation)






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






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






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






41. When are dairy cattle dehorned?






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






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






44. 10-37 (21) days






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






46. Parturition is controlled by...






47. 283 days






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






49. 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)






50. 26 hours after estrus begins