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






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






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






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






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






6. 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






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






8. Sperm is produced here






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






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






11. Urinary calculi.






12. 24 hours before end of estrus cycle






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






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






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






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






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






18. Allows extension of penis without fibro-elastic penis






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






20. ~305 days (altough often longer due to breeding difficulties)






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






22. Days which have increasing daylight hours

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






24. Animal which has been castrated after puberty






25. 1-2 days






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






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






28. Days which have increasing daylight hours

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






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






31. Produce testosterone. located between the seminiferous tubules






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






33. 30 hours after estrus begins






34. (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






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






36. Days which have decreasing daylight hours

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






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






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






40. 265-285 days






41. (FSH) causes egg to mature in females






42. Why does estrus happen before ovulation?






43. Failure to have both testis (gonads) descend






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






45. 265-285 days






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






47. Days which have decreasing daylight hours

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48. Superior genes are _______ to multiply






49. 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.






50. Parturition is controlled by...