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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. 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






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






4. (FSH) causes egg to mature in females






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






6. Sperm is produced here






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






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






9. 1-3 days






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






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






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






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






14. Days which have increasing daylight hours

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15. Actual heat cycle (period)






16. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






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






18. 1-2 days






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

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20. 2 month growth cycle. stored in the epididymis of the bull






21. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






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






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






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






26. 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






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






28. Sperm production






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






30. 10-37 (21) days






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






32. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






33. (FSH) causes egg to mature in females






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






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






36. 19-23 (21) days






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






38. Male on one pin and female on other side






39. Superior genes are _______ to multiply






40. Failure to have both testis (gonads) descend






41. Actual heat cycle (period)






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






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






44. Implies the amount of estrogen production






45. Why Dairy calves are fed powdered milk.






46. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






47. 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.






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






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






50. 26 hours after estrus begins