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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. 1-3 days






2. ~60 days before calving






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

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4. Why Dairy calves are fed powdered milk.






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






6. Animal which has been castrated after puberty






7. Microscopic - make sure not sterile - very few bulls are actually tested






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






9. (FSH) causes egg to mature in females






10. Sperm is produced here






11. 19-23 (21) days






12. 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.






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






14. 30-38 hours after estrus cycle begins






15. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






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






17. 4-6 days






18. FEED






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






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






21. Sperm production






22. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






23. Produce testosterone. located between the seminiferous tubules






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






25. When are steers and heifers weaned from bottle feeding?






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






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






28. 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)






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






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

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






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






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






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






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






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






37. 265-285 days






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






39. 30 hours after estrus begins






40. 1-3 days






41. Superior genes are _______ to multiply






42. 24 hours before end of estrus cycle






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






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






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






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






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






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






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






50. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells







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