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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. 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






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






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






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






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






6. 2 month growth cycle. stored in the epididymis of the bull






7. Allows extension of penis without fibro-elastic penis






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






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






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






11. (FSH) causes egg to mature in females






12. 1-2 days






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






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






15. 14-19 (17) days






16. FEED






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






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






19. Produce testosterone. located between the seminiferous tubules






20. 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






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






22. When are dairy cattle dehorned?






23. Produce testosterone. located between the seminiferous tubules






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






25. 26 hours after estrus begins






26. 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.






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






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






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






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






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






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






33. Birthing process (termination of gestation)






34. 1-2 days






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






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






37. 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.






38. When are dairy cattle dehorned?






39. 147 days






40. 4-6 days






41. 1-3 days






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






43. 10-37 (21) days






44. Why Dairy calves are fed powdered milk.






45. Failure to have both testis (gonads) descend






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






47. Luteolysis happens because of the ____________ hormone






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






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






50. Superior genes are _______ to multiply