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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. (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






2. 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.






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






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






5. Why Dairy calves are fed powdered milk.






6. ~305 days (altough often longer due to breeding difficulties)






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






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






9. Produce testosterone. located between the seminiferous tubules






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






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






12. Important 'landmark' during palpation






13. 147 days






14. 265-285 days






15. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






16. 2 month growth cycle. stored in the epididymis of the bull






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






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






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






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






21. Actual heat cycle (period)






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






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






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






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






26. 45-60 days after breeding; re-breed as required






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






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






29. 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)






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






31. 283 days






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






33. Male on one pin and female on other side






34. ~60 days before calving






35. Sperm production






36. Animal which has been castrated after puberty






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






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






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






40. What helps regulate spermatogenesis?






41. 147 days






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






43. 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)






44. Days which have increasing daylight hours

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






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






47. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






48. 114 days






49. 1-3 days






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