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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. Days which have increasing daylight hours

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2. Animal which has been castrated after puberty






3. Sperm production






4. Important 'landmark' during palpation






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






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






7. 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)






8. Luteolysis happens because of the ____________ hormone






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






10. Implies the amount of estrogen production






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






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






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






14. 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.






15. Birthing process (termination of gestation)






16. 336 days






17. Larger the cow - more milk is produced; smaller the cow - less milk is produced






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






19. Important 'landmark' during palpation






20. 114 days






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






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

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






24. Scar tissue plugs up chambers of udder






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






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






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






28. 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)






29. Why Dairy calves are fed powdered milk.






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






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






32. Failure to have one testis (gonad) to descend






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






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






35. 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






36. 30-38 hours after estrus cycle begins






37. Luteolysis happens because of the ____________ hormone






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






39. 24 hours before end of estrus cycle






40. Urinary calculi.






41. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






42. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






43. Provide nourishment for the developing sperm






44. 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)






45. Failure to have both testis (gonads) descend






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






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






48. Urinary calculi.






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






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