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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. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
Bull's fibro-elastic penis
behavioral signs of estrus
elastrator
Dairy calves are removed from cow at birth to...
2. Failure to have one testis (gonad) to descend
growth lost from castration methods (knife & band)
functions of progestrone
monorchid
ewe ovulation
3. 283 days
cow gestation
cryptorchid
hypothalamus and pituitary gland
Follical Stimulating in females
4. Duct through penis that carries sperm and urine
urethra
mare estrus cycle
~1 month
rectal palpation (BSE)
5. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
uterus
Dairy calves are removed from cow at birth to...
Culls bulls earlier (2 reasons)
Jersey Cow
6. ~60 days before calving
feeding a high producing dairy cow
cow gestation
stag
dry-off time in dairy cattle
7. Days which have decreasing daylight hours
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8. 336 days
sow estrus
mare gestation
sperm cell
elastrator
9. Can survive ~7 days in cow. vast majority <48 hours
monestrous
6-8 weeks
Sperm survival specs
prostaglandin
10. Milk ~305 days - dry 60 days prior to calving
Jersey Cow
Dairy Cattle milking schedule
sertoli cells
scrotal circumference (BSE)
11. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
sow gestation
mare estrus
hormones
12. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
penis proper
Parturition
Dairy Cattle Lactation (standard)
eminal vesicles
13. Can survive ~7 days in cow. vast majority <48 hours
Sperm survival specs
sperm cell
cow ovulation
butterfat
14. Allows extension of penis without fibro-elastic penis
normal presentation of the fetus
sigmoid flexure
dry-off time in dairy cattle
Size of cow in relation to the amount of milk produced
15. (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
Bull's fibro-elastic penis
#1 cost in production
epididymis: definition - 3 parts - 4 functions
dry-off time in dairy cattle
16. 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
mare estrus
functions of progestrone
scrotum
dairy cattle pregnancy check
17. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Reasons for gestation length being affected
colostrum
spermatogenesis
dry matter and water
18. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
Lutinizing Hormone in females
mare gestation
urethra
19. (FSH) causes egg to mature in females
vagina
Jersey Cow
rectal palpation (BSE)
Follical Stimulating in females
20. Birthing process (termination of gestation)
behavioral signs of estrus
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Reasons for gestation length being affected
Parturition
21. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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22. 147 days
mare estrus cycle
ewe gestation
Parturition
Sperm survival specs
23. Milk is 15% ________ and 85% __________.
dry matter and water
cremaster muscle
elastrator
oviducts
24. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
dartos muscle
testosterone
polyestrous
25. Days which have decreasing daylight hours
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26. Sperm production
spermatogenesis
sperm cell
Parturition
functions of progestrone
27. FEED
1. more cost effective - 2. powdered milk is in excess production
cryptorchid
#1 cost in production
hypothalamus and pituitary gland
28. Why Dairy calves are fed powdered milk.
1. more cost effective - 2. powdered milk is in excess production
Where livelihood is in agriculture
ewe estrus cycle
oviducts
29. Failure to have both testis (gonads) descend
behavioral signs of estrus
ewe estrus
cryptorchid
cowper's gland
30. Days which have increasing daylight hours
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31. Implies the amount of estrogen production
femininity of a heifer
monestrous
cryptorchid
dairy cattle pregnancy check
32. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
mare's estrous cycle
penis sizes vs delivering methods
visual evaluation (BSE)
butterfat
33. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
Follical Stimulating in females
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
Bull's fibro-elastic penis
age and castration
34. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
1. more cost effective - 2. powdered milk is in excess production
retractor muscles
eminal vesicles
growth lost from castration methods (knife & band)
35. 1-3 days
monestrous
hypothalamus and pituitary gland
sow estrus
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
36. When are steers and heifers weaned from bottle feeding?
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Where livelihood is in agriculture
6-8 weeks
stag
37. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
eminal vesicles
butterfat
seminiferous tubules
reasons for castration
38. Parturition is controlled by...
penis proper
6-8 weeks
seminiferous tubules
Hormones from both the fetus and the mom.
39. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
Hard
4 major reasons for culling dairy cows
organs used in spermatogenesis
dairy cattle pregnancy check
40. Allows extension of penis without fibro-elastic penis
Parturition
dartos muscle
sigmoid flexure
colostrum
41. Produce testosterone. located between the seminiferous tubules
Hard
Lutinizing Hormone in females
Reasons for gestation length being affected
leydid or interstitial cells
42. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
seasonally polyestrous
dartos muscle
Avg. bull specs
oviducts
43. 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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44. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
rectal palpation (BSE)
mastitis
organs used in spermatogenesis
cremaster muscle
45. (switzerland) 2nd in size and milk production - most muscle -
ewe ovulation
normal presentation of the fetus
Avg. bull specs
Brown Swiss Cow
46. 16-20 hours
testis (gonads)
organs used in spermatogenesis
cow estrus
Hormones from both the fetus and the mom.
47. 16-20 hours
retractor muscles
Hormones from both the fetus and the mom.
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
cow estrus
48. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Follical Stimulating in males
sperm cell
rectal palpation (BSE)
things to check for in a breeding soundness exam (BSE)
49. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
epididymis: definition - 3 parts - 4 functions
~1 month
Follical Stimulating in females
50. Scar tissue plugs up chambers of udder
mastitis
reason for seasonal breeding periods
femininity of a heifer
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