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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.
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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. 4-6 days






2. 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






3. 147 days






4. Important 'landmark' during palpation






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






6. Days which have increasing daylight hours

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7. Duct through penis that carries sperm and urine






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






9. Why Dairy calves are fed powdered milk.






10. Sperm production






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






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






13. 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.






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






15. 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.






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






17. 45-60 days after breeding; re-breed as required






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






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






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






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






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






23. Male on one pin and female on other side






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






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






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






27. 265-285 days






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






29. Parturition is controlled by...






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






31. 26 hours after estrus begins






32. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






33. Animal which has been castrated after puberty






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






35. 19-23 (21) days






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






37. (FSH) causes egg to mature in females






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






39. 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)






40. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






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






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






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






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






45. Implies the amount of estrogen production






46. 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.






47. Animal which has been castrated after puberty






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






49. Depository for semen during insemination. where urine leaves the body






50. 30-38 hours after estrus cycle begins







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