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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. 265-285 days






2. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






3. 1-3 days






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






5. 2 month growth cycle. stored in the epididymis of the bull






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






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






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






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






10. FEED






11. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






12. 1-2 days






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






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






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






16. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






17. 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






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






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






20. Superior genes are _______ to multiply






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






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






23. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






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






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






26. 10-37 (21) days






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






28. Actual heat cycle (period)






29. 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






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






31. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






32. Birthing process (termination of gestation)






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






34. 30 hours after estrus begins






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






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






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






38. What helps regulate spermatogenesis?






39. (FSH) causes egg to mature in females






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






41. Sperm is produced here






42. 45-60 days after breeding; re-breed as required






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






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






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






46. 30-38 hours after estrus cycle begins






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






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






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






50. 19-23 (21) days