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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. Scar tissue plugs up chambers of udder
mastitis
hypothalamus and pituitary gland
semen evaluation (BSE)
polyestrous
2. 1. brain function - 2. blood flow - 3. willing female
cow estrus cycle
colostrum
semen evaluation (BSE)
what has to happen for males for copulation to occur
3. 30 hours after estrus begins
cow ovulation
sow estrus
femininity of a heifer
scrotal circumference (BSE)
4. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
Follical Stimulating in females
Lutinizing Hormone in males
cowper's gland
organs used in spermatogenesis
5. (FSH) causes egg to mature in females
Follical Stimulating in females
Lutinizing Hormone in males
femininity of a heifer
castration
6. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Grading choice
testosterone
rectal palpation (BSE)
effects of estrogen
7. When are steers and heifers weaned from bottle feeding?
humans: stress level vs sperm
6-8 weeks
polyestrous
van deferens
8. 30 hours after estrus begins
cryptorchid
cow ovulation
feeding a high producing dairy cow
sow estrus
9. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
Size of cow in relation to the amount of milk produced
burdizzo
mare's estrous cycle
ewe ovulation
10. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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11. Depository for semen during insemination. where urine leaves the body
Follical Stimulating in males
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
vagina
penis and prepuce observation (BSE)
12. Prevent the cow from getting an infection from the calve
Blood
monorchid
Dairy calves are removed from cow at birth to...
mare estrus
13. Front feet and head first. (except for hogs and dogs)
organs used in spermatogenesis
estrous
epididymis: definition - 3 parts - 4 functions
normal presentation of the fetus
14. When are steers and heifers weaned from bottle feeding?
Sperm survival specs
sow gestation
6-8 weeks
uterus
15. Days which have decreasing daylight hours
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16. Not under a timeline - cow can not be sold as steak
ewe estrus
#1 cost in production
Grading choice
cervix
17. Sperm is produced here
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Lutinizing Hormone in males
seminiferous tubules
6-8 weeks
18. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
pelvis
Lutinizing Hormone in males
feeding a high producing dairy cow
19. 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
sow gestation
urethra
reason for seasonal breeding periods
20. To remove/separate testicles from animal's body before animal reaches puberty
oviducts
Lutinizing Hormone in males
castration
monorchid
21. What makes the milk flow through the mammary glands?
Blood
Follical Stimulating in females
cow estrus
van deferens
22. 2 month growth cycle. stored in the epididymis of the bull
sow estrus cycle
sigmoid flexure
Sperm growth rate
mare gestation
23. 2 month growth cycle. stored in the epididymis of the bull
Sperm growth rate
eminal vesicles
cow estrus
effects of estrogen
24. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
normal presentation of the fetus
Grading choice
behavioral signs of estrus
dartos muscle
25. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis and prepuce observation (BSE)
normal presentation of the fetus
age and castration
penis sizes vs delivering methods
26. (switzerland) 2nd in size and milk production - most muscle -
reasons for castration
age and castration
scrotal circumference (BSE)
Brown Swiss Cow
27. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Jersey Cow
rectal palpation (BSE)
penis and prepuce observation (BSE)
sow gestation
28. Important 'landmark' during palpation
cervix
sow estrus cycle
Where livelihood is in agriculture
penis sizes vs delivering methods
29. FEED
#1 cost in production
accessory sex glands
cow estrus cycle
polyestrous
30. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
testosterone
Dairy Cattle Lactation (standard)
Sperm growth rate
hormones
31. 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.
what has to happen for males for copulation to occur
uterus
4 major reasons for culling dairy cows
Follical Stimulating in females
32. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
Jersey Cow
what has to happen for males for copulation to occur
sperm cell
cow estrus
33. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Dairy Cattle milking schedule
Reasons for gestation length being affected
Follical Stimulating in females
Avg. bull specs
34. Produce testosterone. located between the seminiferous tubules
polyestrous
effects of estrogen
leydid or interstitial cells
sow estrus
35. 16-20 hours
cervix
Where livelihood is in agriculture
cow estrus
sow ovulation
36. To remove/separate testicles from animal's body before animal reaches puberty
normal presentation of the fetus
ewe ovulation
castration
vagina
37. (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
sertoli cells
epididymis: definition - 3 parts - 4 functions
cremaster muscle
estrus
38. Microscopic - make sure not sterile - very few bulls are actually tested
cow estrus
spermatogenesis
Avg. bull specs
semen evaluation (BSE)
39. ~60 days before calving
monestrous
4 major reasons for culling dairy cows
kidney stones also called ________ ___________ can develop in the sigmoid flexure
dry-off time in dairy cattle
40. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
Grading choice
Lutinizing Hormone in females
cervix
prostate gland
41. 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
things to check for in a breeding soundness exam (BSE)
sow ovulation
Dairy Cattle Gestation
functions of progestrone
42. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
mare ovulation
Avg. bull specs
testis (gonads)
Holstein Cow
43. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
~1 month
growth lost from castration methods (knife & band)
pelvis
things to check for in a breeding soundness exam (BSE)
44. 336 days
prostaglandin
mare gestation
hypothalamus and pituitary gland
van deferens
45. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Size of cow in relation to the amount of milk produced
Dairy Cattle Gestation
butterfat
Grading choice
46. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
seasonally polyestrous
prostate gland
cowper's gland
~1 month
47. Look for infection - split - and rupture of the penis
things to check for in a breeding soundness exam (BSE)
mare's estrous cycle
penis and prepuce observation (BSE)
seasonally polyestrous
48. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
Blood
penis sizes vs delivering methods
stag
cow gestation
49. Not under a timeline - cow can not be sold as steak
Grading choice
mare gestation
Culls bulls earlier (2 reasons)
Sperm growth rate
50. 30-38 hours after estrus cycle begins
sertoli cells
cervix
#1 cost in production
sow ovulation