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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
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. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
castration
Dairy Cattle milking schedule
Sperm growth rate
organs used in spermatogenesis
2. Implies the amount of estrogen production
butterfat
prostate gland
femininity of a heifer
humans: stress level vs sperm
3. 1. brain function - 2. blood flow - 3. willing female
what has to happen for males for copulation to occur
effects of estrogen
monorchid
Sperm survival specs
4. Larger the cow - more milk is produced; smaller the cow - less milk is produced
cervix
ewe ovulation
Follical Stimulating in males
Size of cow in relation to the amount of milk produced
5. 336 days
mare gestation
purpose of Breeding Soundness Exam (BSE) for males
Follical Stimulating in females
ewe ovulation
6. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Parturition
behavioral signs of estrus
cow gestation
leydid or interstitial cells
7. (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
organs used in spermatogenesis
dartos muscle
libido test (BSE)
epididymis: definition - 3 parts - 4 functions
8. The more stressed out the male is - the less sperm he is going to produce
Reasons for gestation length being affected
cow estrus
humans: stress level vs sperm
monestrous
9. Allows extension of penis without fibro-elastic penis
sigmoid flexure
Avg. bull specs
epididymis: definition - 3 parts - 4 functions
Holstein Cow
10. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
Jersey Cow
sow estrus cycle
seminiferous tubules
11. (FSH) causes egg to mature in females
1. more cost effective - 2. powdered milk is in excess production
things to check for in a breeding soundness exam (BSE)
Follical Stimulating in females
Blood
12. When are dairy cattle dehorned?
effects of estrogen
~1 month
libido test (BSE)
estrus
13. (LH) causes female's egg to break (her period)
sow estrus cycle
~1 month
Lutinizing Hormone in females
seminiferous tubules
14. Failure to have both testis (gonads) descend
cryptorchid
Mares
mare ovulation
hormones
15. 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
effects of BST
penis sizes vs delivering methods
6-8 weeks
prostaglandin
16. Microscopic - make sure not sterile - very few bulls are actually tested
4 major reasons for culling dairy cows
semen evaluation (BSE)
polyestrous
what has to happen for males for copulation to occur
17. 19-23 (21) days
sow ovulation
normal presentation of the fetus
cow estrus cycle
ewe estrus cycle
18. Birthing process (termination of gestation)
humans: stress level vs sperm
Bull's fibro-elastic penis
Parturition
effects of estrogen
19. Why Dairy calves are fed powdered milk.
~1 month
burdizzo
Grading choice
1. more cost effective - 2. powdered milk is in excess production
20. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Avg. bull specs
scrotum
sperm cell
sertoli cells
21. (LH) causes female's egg to break (her period)
estrus
mastitis
Lutinizing Hormone in females
eminal vesicles
22. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
things to check for in a breeding soundness exam (BSE)
accessory sex glands
Brown Swiss Cow
prostaglandin
23. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
sow ovulation
eminal vesicles
seminiferous tubules
Mares
24. Look for infection - split - and rupture of the penis
mare's estrous cycle
accessory sex glands
Lutinizing Hormone in females
penis and prepuce observation (BSE)
25. Failure to have one testis (gonad) to descend
vagina
monorchid
femininity of a heifer
Hormones from both the fetus and the mom.
26. Superior genes are _______ to multiply
hormones
burdizzo
Hard
sow estrus
27. Animals which have only one estrous cycle (ex: dog - fox)
stag
burdizzo
ewe estrus
monestrous
28. (male) pushes the testes upward toward the body for warmth or protection
dartos muscle
Dairy calves are removed from cow at birth to...
reasons for castration
eminal vesicles
29. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Follical Stimulating in females
Lutinizing Hormone in females
Avg. bull specs
monorchid
30. Microscopic - make sure not sterile - very few bulls are actually tested
behavioral signs of estrus
sperm cell
semen evaluation (BSE)
humans: stress level vs sperm
31. Front feet and head first. (except for hogs and dogs)
normal presentation of the fetus
#1 cost in production
4 major reasons for culling dairy cows
sperm cell
32. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Hard
purpose of Breeding Soundness Exam (BSE) for males
Jersey Cow
Sperm survival specs
33. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
cremaster muscle
mare's estrous cycle
ewe estrus cycle
34. Important 'landmark' during palpation
Where livelihood is in agriculture
testis (gonads)
cervix
semen evaluation (BSE)
35. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
cow estrus cycle
dartos muscle
vagina
36. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
purpose of Breeding Soundness Exam (BSE) for males
estrous
colostrum
penis sizes vs delivering methods
37. 265-285 days
age and castration
#1 cost in production
Hormones from both the fetus and the mom.
Dairy Cattle Gestation
38. ~305 days (altough often longer due to breeding difficulties)
penis proper
Size of cow in relation to the amount of milk produced
ewe ovulation
Dairy Cattle Lactation (standard)
39. Implies the amount of estrogen production
eminal vesicles
reasons for castration
Mares
femininity of a heifer
40. Provide nourishment for the developing sperm
polyestrous
epididymis: definition - 3 parts - 4 functions
sertoli cells
seminiferous tubules
41. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Follical Stimulating in males
ewe gestation
things to check for in a breeding soundness exam (BSE)
rectal palpation (BSE)
42. ~60 days before calving
dry-off time in dairy cattle
castration
sertoli cells
sperm cell
43. ~305 days (altough often longer due to breeding difficulties)
Dairy Cattle Lactation (standard)
feeding a high producing dairy cow
Follical Stimulating in males
mare's estrous cycle
44. When are steers and heifers weaned from bottle feeding?
accessory sex glands
rectal palpation (BSE)
6-8 weeks
elastrator
45. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
reason for seasonal breeding periods
Mares
mare's estrous cycle
scrotal circumference (BSE)
46. 283 days
monestrous
estrus
cow gestation
sertoli cells
47. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
semen evaluation (BSE)
hormones
functions of progestrone
mare's estrous cycle
48. Scar tissue plugs up chambers of udder
urethra
mastitis
things to check for in a breeding soundness exam (BSE)
ewe estrus
49. Help to signal hormone levels which we need both in the brain right next to each other.
mare's estrous cycle
hypothalamus and pituitary gland
Holstein Cow
Mares
50. Luteolysis happens because of the ____________ hormone
scrotum
prostaglandin
Blood
estrous