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






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






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






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






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






6. Male on one pin and female on other side






7. Why Dairy calves are fed powdered milk.






8. Failure to have both testis (gonads) descend






9. (FSH) causes egg to mature in females






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






11. 265-285 days






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






13. 26 hours after estrus begins






14. Actual heat cycle (period)






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






16. Parturition is controlled by...






17. What helps regulate spermatogenesis?






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






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






20. 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.






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






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






23. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






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






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






26. 336 days






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






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






29. Why Dairy calves are fed powdered milk.






30. Implies the amount of estrogen production






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






32. 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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33. Superior genes are _______ to multiply






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






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






36. 2 month growth cycle. stored in the epididymis of the bull






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






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






39. 14-19 (17) days






40. 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.






41. Important 'landmark' during palpation






42. 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.






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






44. 19-23 (21) days






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






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






47. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






48. Sperm is produced here






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






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