Test your basic knowledge |

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. Failure to have both testis (gonads) descend






2. 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.






3. Luteolysis happens because of the ____________ hormone






4. Provide nourishment for the developing sperm






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






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






7. FEED






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






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






10. 147 days






11. Why does estrus happen before ovulation?






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






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






14. Why does estrus happen before ovulation?






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






16. Produce testosterone. located between the seminiferous tubules






17. 2 month growth cycle. stored in the epididymis of the bull






18. Actual heat cycle (period)






19. ~305 days (altough often longer due to breeding difficulties)






20. Sperm production






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






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






23. 1-3 days






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






25. 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.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






27. 19-23 (21) days






28. Sperm is produced here






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






30. Male on one pin and female on other side






31. 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.






32. 4-6 days






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






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






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






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






37. Luteolysis happens because of the ____________ hormone






38. Actual heat cycle (period)






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






40. (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






41. Animal which has been castrated after puberty






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






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






44. 2 month growth cycle. stored in the epididymis of the bull






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






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






47. 283 days






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






49. 147 days






50. Animal which has been castrated after puberty