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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






2. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






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






4. Superior genes are _______ to multiply






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






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






7. When are dairy cattle dehorned?






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






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






10. 1-2 days






11. 30 hours after estrus begins






12. Male on one pin and female on other side






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






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






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






16. (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






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






18. Duct through penis that carries sperm and urine






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






20. Implies the amount of estrogen production






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






22. Urinary calculi.






23. What helps regulate spermatogenesis?






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






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






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






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






28. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






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






30. 30-38 hours after estrus cycle begins






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






32. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






33. Parturition is controlled by...






34. 24 hours before end of estrus cycle






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






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






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






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






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






40. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






41. 16-20 hours






42. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






43. 30 hours after estrus begins






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






45. ~60 days before calving






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






47. Sperm is produced here






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






49. ~60 days before calving






50. 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)







Sorry!:) No result found.

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