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






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






3. Prevent the cow from getting an infection from the calve






4. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






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






6. 2 month growth cycle. stored in the epididymis of the bull






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






8. 24 hours before end of estrus cycle






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






10. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






11. Failure to have both testis (gonads) descend






12. 16-20 hours






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






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






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






16. Duct through penis that carries sperm and urine






17. ~305 days (altough often longer due to breeding difficulties)






18. 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.






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






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






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






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






23. Sperm production






24. 30-38 hours after estrus cycle begins






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






26. 45-60 days after breeding; re-breed as required






27. Check feet and legs - look for masculine traits in build such as crest and muscling






28. Why Dairy calves are fed powdered milk.






29. Allows extension of penis without fibro-elastic penis






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






31. 283 days






32. 19-23 (21) days






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






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






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






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






37. 283 days






38. Implies the amount of estrogen production






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






40. 30 hours after estrus begins






41. 45-60 days after breeding; re-breed as required






42. (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






43. FEED






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






45. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






46. 1-2 days






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






48. 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






49. 10-37 (21) days






50. 30-38 hours after estrus cycle begins