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






2. 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.






3. Parturition is controlled by...






4. When are dairy cattle dehorned?






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






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






7. Failure to have both testis (gonads) descend






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






9. Why does estrus happen before ovulation?






10. Days which have increasing daylight hours

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






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






13. (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






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






15. Contains and regulates the temp of the testes for sperm production






16. 14-19 (17) days






17. Animal which has been castrated after puberty






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






19. 1-3 days






20. Urinary calculi.






21. 4-6 days






22. Implies the amount of estrogen production






23. Days which have decreasing daylight hours

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24. Larger the cow - more milk is produced; smaller the cow - less milk is produced






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






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






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






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






29. 30 hours after estrus begins






30. 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






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






32. 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.






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






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






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






36. Produce testosterone. located between the seminiferous tubules






37. Sperm is produced here






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






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






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






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






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






43. 10-37 (21) days






44. Why Dairy calves are fed powdered milk.






45. 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.






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






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






49. 114 days






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