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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. 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)






2. Birthing process (termination of gestation)






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






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






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






6. 45-60 days after breeding; re-breed as required






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






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






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






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






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






12. 1-2 days






13. Allows extension of penis without fibro-elastic penis






14. Implies the amount of estrogen production






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






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






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






18. Animal which has been castrated after puberty






19. Provide nourishment for the developing sperm






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






21. 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)






22. Birthing process (termination of gestation)






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






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






25. Days which have decreasing daylight hours

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






27. 30 hours after estrus begins






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






29. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






30. Sperm production






31. 16-20 hours






32. 283 days






33. 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.






34. 283 days






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






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






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






38. Urinary calculi.






39. 30-38 hours after estrus cycle begins






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






41. 30-38 hours after estrus cycle begins






42. Parturition is controlled by...






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






44. Actual heat cycle (period)






45. 4-6 days






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






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






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






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

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50. Male on one pin and female on other side