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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. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
leydid or interstitial cells
Hard
feeding a high producing dairy cow
2. Birthing process (termination of gestation)
Parturition
effects of BST
leydid or interstitial cells
spermatogenesis
3. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
sperm cell
cremaster muscle
testis (gonads)
monorchid
4. ~60 days before calving
ewe's estrous cycle
oviducts
cervix
dry-off time in dairy cattle
5. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
Holstein Cow
functions of progestrone
pelvis
Sperm survival specs
6. Scar tissue plugs up chambers of udder
mastitis
penis and prepuce observation (BSE)
sigmoid flexure
monorchid
7. (LH) stimulates the Leydig cells to produce testosterone
castration
Lutinizing Hormone in males
Brown Swiss Cow
cremaster muscle
8. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Follical Stimulating in males
cryptorchid
things to check for in a breeding soundness exam (BSE)
effects of BST
9. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
seasonally polyestrous
sigmoid flexure
Brown Swiss Cow
stag
10. Start of the reproductive tract for the female. located outside of the body
vulva
cow gestation
ewe estrus cycle
mare estrus
11. 4-6 days
cryptorchid
retractor muscles
Holstein Cow
mare estrus
12. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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13. 19-23 (21) days
Culls bulls earlier (2 reasons)
van deferens
sow estrus cycle
sow gestation
14. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Where livelihood is in agriculture
sow ovulation
vulva
Jersey Cow
15. Milk is 15% ________ and 85% __________.
epididymis: definition - 3 parts - 4 functions
dry matter and water
Sperm growth rate
libido test (BSE)
16. Parturition is controlled by...
visual evaluation (BSE)
estrous
elastrator
Hormones from both the fetus and the mom.
17. (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
epididymis: definition - 3 parts - 4 functions
semen evaluation (BSE)
hypothalamus and pituitary gland
elastrator
18. Milk ~305 days - dry 60 days prior to calving
estrus
Dairy Cattle milking schedule
leydid or interstitial cells
visual evaluation (BSE)
19. 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.
epididymis: definition - 3 parts - 4 functions
prostaglandin
vagina
uterus
20. 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.
cowper's gland
mastitis
colostrum
Avg. bull specs
21. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
sertoli cells
sperm cell
cow gestation
Jersey Cow
22. Why does estrus happen before ovulation?
sperm cell
cervix
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
cow gestation
23. 10-37 (21) days
mare estrus cycle
mare's estrous cycle
polyestrous
vulva
24. 14-19 (17) days
ewe estrus cycle
ewe's estrous cycle
seminiferous tubules
Sperm growth rate
25. What makes the milk flow through the mammary glands?
~1 month
Blood
growth lost from castration methods (knife & band)
Lutinizing Hormone in females
26. 19-23 (21) days
cow estrus cycle
normal presentation of the fetus
feeding a high producing dairy cow
cow ovulation
27. 283 days
Where livelihood is in agriculture
sow estrus
cow gestation
things to check for in a breeding soundness exam (BSE)
28. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
organs used in spermatogenesis
dry matter and water
6-8 weeks
Size of cow in relation to the amount of milk produced
29. (male) pushes the testes upward toward the body for warmth or protection
cremaster muscle
growth lost from castration methods (knife & band)
dartos muscle
cowper's gland
30. Urinary calculi.
growth lost from castration methods (knife & band)
burdizzo
ewe's estrous cycle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
31. Superior genes are _______ to multiply
Sperm survival specs
leydid or interstitial cells
Hard
dry matter and water
32. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
Reasons for gestation length being affected
polyestrous
mare gestation
hormones
33. Produce testosterone. located between the seminiferous tubules
leydid or interstitial cells
cow estrus cycle
vulva
Size of cow in relation to the amount of milk produced
34. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
estrus
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
monestrous
growth lost from castration methods (knife & band)
35. 283 days
estrus
scrotum
cow gestation
Mares
36. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
purpose of Breeding Soundness Exam (BSE) for males
pelvis
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
castration
37. 26 hours after estrus begins
ewe ovulation
cryptorchid
sertoli cells
Blood
38. ~305 days (altough often longer due to breeding difficulties)
Dairy Cattle Lactation (standard)
Parturition
4 major reasons for culling dairy cows
cowper's gland
39. (male) pushes the testes outward toward the legs for a cool-down off of the body
elastrator
cremaster muscle
burdizzo
semen evaluation (BSE)
40. Microscopic - make sure not sterile - very few bulls are actually tested
cow ovulation
Blood
Follical Stimulating in males
semen evaluation (BSE)
41. (switzerland) 2nd in size and milk production - most muscle -
retractor muscles
Hormones from both the fetus and the mom.
reason for seasonal breeding periods
Brown Swiss Cow
42. Failure to have both testis (gonads) descend
cryptorchid
growth lost from castration methods (knife & band)
colostrum
cow estrus cycle
43. 16-20 hours
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Bull's fibro-elastic penis
cow estrus
van deferens
44. Way to know everything is alright with the breeding male
why does the cow need fat deposits during pregnancy?
effects of estrogen
purpose of Breeding Soundness Exam (BSE) for males
sigmoid flexure
45. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
Mares
age and castration
Lutinizing Hormone in males
prostate gland
46. Failure to have one testis (gonad) to descend
sperm cell
monorchid
scrotum
#1 cost in production
47. Provide nourishment for the developing sperm
dartos muscle
stag
sertoli cells
why does the cow need fat deposits during pregnancy?
48. Produce testosterone. located between the seminiferous tubules
leydid or interstitial cells
oviducts
purpose of Breeding Soundness Exam (BSE) for males
sperm cell
49. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
sertoli cells
age and castration
#1 cost in production
accessory sex glands
50. 1. brain function - 2. blood flow - 3. willing female
what has to happen for males for copulation to occur
estrus
Grading choice
Where livelihood is in agriculture