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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. 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






2. (FSH) causes egg to mature in females






3. 147 days






4. 147 days






5. 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






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






7. 265-285 days






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






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






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






11. 19-23 (21) days






12. Allows extension of penis without fibro-elastic penis






13. Sperm production






14. Sperm is produced here






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






16. Male on one pin and female on other side






17. FEED






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






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






20. Birthing process (termination of gestation)






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






22. ~60 days before calving






23. (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






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






25. Duct through penis that carries sperm and urine






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






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






28. 14-19 (17) days






29. Luteolysis happens because of the ____________ hormone






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

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






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






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






34. 26 hours after estrus begins






35. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






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






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






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






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






40. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






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






42. 19-23 (21) days






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






44. What helps regulate spermatogenesis?






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






46. Superior genes are _______ to multiply






47. 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.






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






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






50. 1-2 days