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






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






3. 19-23 (21) days






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






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






6. 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.






7. Male on one pin and female on other side






8. 147 days






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






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






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






12. Sperm production






13. 14-19 (17) days






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






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






16. 1-3 days






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






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






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

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20. Sperm production






21. 1-3 days






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






23. 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.

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24. Duct through penis that carries sperm and urine






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






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






27. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






28. 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.






29. 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.

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30. When are dairy cattle dehorned?






31. Allows extension of penis without fibro-elastic penis






32. Important 'landmark' during palpation






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






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






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






36. (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






37. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






38. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






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






40. Superior genes are _______ to multiply






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






42. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






43. 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)






44. Start of the reproductive tract for the female. located outside of the body






45. 14-19 (17) days






46. 26 hours after estrus begins






47. 265-285 days






48. Sperm is produced here






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






50. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %