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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. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
Lutinizing Hormone in females
ewe ovulation
estrous
ewe's estrous cycle
2. Microscopic - make sure not sterile - very few bulls are actually tested
ewe estrus
Hard
monorchid
semen evaluation (BSE)
3. (switzerland) 2nd in size and milk production - most muscle -
Dairy Cattle Gestation
Brown Swiss Cow
mare estrus
Dairy Cattle Gestation
4. (FSH) causes egg to mature in females
cow estrus cycle
Bull's fibro-elastic penis
Follical Stimulating in females
vulva
5. Allows extension of penis without fibro-elastic penis
cremaster muscle
sigmoid flexure
colostrum
Culls bulls earlier (2 reasons)
6. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
effects of estrogen
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
seasonally polyestrous
7. Duct through penis that carries sperm and urine
why does the cow need fat deposits during pregnancy?
leydid or interstitial cells
urethra
Size of cow in relation to the amount of milk produced
8. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
monestrous
leydid or interstitial cells
organs used in spermatogenesis
butterfat
9. (switzerland) 2nd in size and milk production - most muscle -
Grading choice
Brown Swiss Cow
~1 month
semen evaluation (BSE)
10. 10-37 (21) days
mare estrus cycle
colostrum
oviducts
Dairy Cattle Lactation (standard)
11. 265-285 days
Culls bulls earlier (2 reasons)
Dairy Cattle Gestation
castration
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
12. Contains and regulates the temp of the testes for sperm production
cowper's gland
scrotum
vagina
hypothalamus and pituitary gland
13. Why does estrus happen before ovulation?
penis sizes vs delivering methods
cryptorchid
mare's estrous cycle
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
14. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
eminal vesicles
accessory sex glands
visual evaluation (BSE)
organs used in spermatogenesis
15. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
elastrator
humans: stress level vs sperm
growth lost from castration methods (knife & band)
Bull's fibro-elastic penis
16. (male) pushes the testes upward toward the body for warmth or protection
scrotal circumference (BSE)
Grading choice
hormones
dartos muscle
17. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
hormones
cryptorchid
reason for seasonal breeding periods
18. 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
visual evaluation (BSE)
effects of BST
sperm cell
sow estrus cycle
19. Provide nourishment for the developing sperm
sertoli cells
Brown Swiss Cow
normal presentation of the fetus
mastitis
20. Days which have increasing daylight hours
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21. Urinary calculi.
testis (gonads)
butterfat
Reasons for gestation length being affected
kidney stones also called ________ ___________ can develop in the sigmoid flexure
22. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
penis sizes vs delivering methods
functions of progestrone
ewe estrus
23. 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)
1. more cost effective - 2. powdered milk is in excess production
testosterone
prostaglandin
24. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Dairy calves are removed from cow at birth to...
Avg. bull specs
Lutinizing Hormone in females
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
25. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
eminal vesicles
cow estrus
scrotum
26. (male) pushes the testes outward toward the legs for a cool-down off of the body
Bull's fibro-elastic penis
cremaster muscle
cryptorchid
Sperm survival specs
27. Depository for semen during insemination. where urine leaves the body
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
vagina
cryptorchid
ewe ovulation
28. 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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29. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
effects of estrogen
accessory sex glands
Holstein Cow
30. Important 'landmark' during palpation
functions of progestrone
hormones
cervix
sperm cell
31. 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.
leydid or interstitial cells
prostate gland
colostrum
pelvis
32. Male on one pin and female on other side
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
libido test (BSE)
stag
~1 month
33. 30 hours after estrus begins
cryptorchid
Dairy Cattle Gestation
cow ovulation
castration
34. 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
Blood
ewe gestation
cryptorchid
functions of progestrone
35. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
Where livelihood is in agriculture
estrous
urethra
stag
36. Failure to have both testis (gonads) descend
castration
leydid or interstitial cells
Avg. bull specs
cryptorchid
37. (LH) causes female's egg to break (her period)
sperm cell
Avg. bull specs
Lutinizing Hormone in females
Where livelihood is in agriculture
38. Luteolysis happens because of the ____________ hormone
Avg. bull specs
Lutinizing Hormone in females
sperm cell
prostaglandin
39. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
mare estrus cycle
organs used in spermatogenesis
Reasons for gestation length being affected
sow gestation
40. Sperm is produced here
sertoli cells
seminiferous tubules
dartos muscle
sow gestation
41. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
what has to happen for males for copulation to occur
Culls bulls earlier (2 reasons)
testosterone
42. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
cow gestation
retractor muscles
Follical Stimulating in females
sow estrus cycle
43. Actual heat cycle (period)
pelvis
cow ovulation
estrus
polyestrous
44. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
retractor muscles
eminal vesicles
mare estrus cycle
penis proper
45. Not under a timeline - cow can not be sold as steak
Grading choice
penis proper
cow ovulation
cremaster muscle
46. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
Lutinizing Hormone in males
mare estrus cycle
cow ovulation
retractor muscles
47. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
organs used in spermatogenesis
ewe estrus
ewe's estrous cycle
age and castration
48. Implies the amount of estrogen production
femininity of a heifer
mare's estrous cycle
4 major reasons for culling dairy cows
organs used in spermatogenesis
49. 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.
uterus
seasonally polyestrous
organs used in spermatogenesis
Jersey Cow
50. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
what has to happen for males for copulation to occur
mare gestation
seasonally polyestrous
Dairy Cattle Gestation