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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. FEED






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






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






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






6. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






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






8. Failure to have both testis (gonads) descend






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






10. Duct through penis that carries sperm and urine






11. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






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






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






14. Sperm production






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






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






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






18. 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.






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






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






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






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






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






24. Important 'landmark' during palpation






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






26. 16-20 hours






27. Implies the amount of estrogen production






28. Why Dairy calves are fed powdered milk.






29. Sperm is produced here






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






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. 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)






33. 24 hours before end of estrus cycle






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






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






36. 10-37 (21) days






37. Luteolysis happens because of the ____________ hormone






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






39. 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.






40. Superior genes are _______ to multiply






41. Can survive ~7 days in cow. vast majority <48 hours






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






43. Male on one pin and female on other side






44. Days which have decreasing daylight hours

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45. Days which have increasing daylight hours

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46. 4-6 days






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






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






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






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