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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. (LH) causes female's egg to break (her period)
leydid or interstitial cells
visual evaluation (BSE)
Lutinizing Hormone in females
rectal palpation (BSE)
2. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
Parturition
mare's estrous cycle
cremaster muscle
accessory sex glands
3. Sperm is produced here
monestrous
libido test (BSE)
seminiferous tubules
accessory sex glands
4. Important 'landmark' during palpation
cremaster muscle
cervix
seasonally polyestrous
van deferens
5. Provide nourishment for the developing sperm
vagina
libido test (BSE)
sertoli cells
cervix
6. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
hormones
Reasons for gestation length being affected
estrus
Grading choice
7. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
sow gestation
vagina
things to check for in a breeding soundness exam (BSE)
mare estrus cycle
8. Parturition is controlled by...
hormones
growth lost from castration methods (knife & band)
Hormones from both the fetus and the mom.
ewe gestation
9. 19-23 (21) days
seminiferous tubules
elastrator
~1 month
cow estrus cycle
10. Depository for semen during insemination. where urine leaves the body
castration
Dairy Cattle milking schedule
vagina
Bull's fibro-elastic penis
11. The more stressed out the male is - the less sperm he is going to produce
rectal palpation (BSE)
humans: stress level vs sperm
reason for seasonal breeding periods
van deferens
12. Front feet and head first. (except for hogs and dogs)
Size of cow in relation to the amount of milk produced
normal presentation of the fetus
butterfat
Dairy Cattle Gestation
13. 1-2 days
Parturition
ewe estrus
epididymis: definition - 3 parts - 4 functions
van deferens
14. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
testosterone
Follical Stimulating in females
dartos muscle
15. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
what has to happen for males for copulation to occur
reason for seasonal breeding periods
Lutinizing Hormone in males
16. Implies the amount of estrogen production
Dairy Cattle Gestation
4 major reasons for culling dairy cows
Dairy Cattle Lactation (standard)
femininity of a heifer
17. 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)
rectal palpation (BSE)
normal presentation of the fetus
Jersey Cow
18. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
ewe's estrous cycle
oviducts
eminal vesicles
19. 1. brain function - 2. blood flow - 3. willing female
epididymis: definition - 3 parts - 4 functions
functions of progestrone
eminal vesicles
what has to happen for males for copulation to occur
20. 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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21. Produce testosterone. located between the seminiferous tubules
monorchid
leydid or interstitial cells
Lutinizing Hormone in males
humans: stress level vs sperm
22. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Blood
things to check for in a breeding soundness exam (BSE)
spermatogenesis
reason for seasonal breeding periods
23. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
why does the cow need fat deposits during pregnancy?
mare estrus
Hormones from both the fetus and the mom.
effects of estrogen
24. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Dairy Cattle milking schedule
Hard
Mares
mare ovulation
25. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
Mares
estrous
effects of BST
femininity of a heifer
26. Superior genes are _______ to multiply
mare ovulation
Hard
libido test (BSE)
Where livelihood is in agriculture
27. 336 days
retractor muscles
mare gestation
functions of progestrone
cow ovulation
28. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
seasonally polyestrous
visual evaluation (BSE)
eminal vesicles
why does the cow need fat deposits during pregnancy?
29. (male) pushes the testes upward toward the body for warmth or protection
elastrator
mastitis
prostate gland
dartos muscle
30. Failure to have both testis (gonads) descend
urethra
cow estrus
why does the cow need fat deposits during pregnancy?
cryptorchid
31. (LH) stimulates the Leydig cells to produce testosterone
Lutinizing Hormone in males
Avg. bull specs
ewe's estrous cycle
visual evaluation (BSE)
32. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
sow estrus cycle
spermatogenesis
oviducts
Culls bulls earlier (2 reasons)
33. Contains and regulates the temp of the testes for sperm production
growth lost from castration methods (knife & band)
scrotum
rectal palpation (BSE)
mare's estrous cycle
34. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
feeding a high producing dairy cow
cryptorchid
sperm cell
Follical Stimulating in males
35. (LH) causes female's egg to break (her period)
monestrous
cremaster muscle
Lutinizing Hormone in females
sow estrus
36. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
#1 cost in production
Follical Stimulating in males
estrous
scrotum
37. 147 days
ewe gestation
mare gestation
penis sizes vs delivering methods
1. more cost effective - 2. powdered milk is in excess production
38. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Reasons for gestation length being affected
ewe's estrous cycle
pelvis
Brown Swiss Cow
39. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
organs used in spermatogenesis
cow ovulation
sow estrus cycle
retractor muscles
40. Depository for semen during insemination. where urine leaves the body
Blood
Grading choice
hormones
vagina
41. Why Dairy calves are fed powdered milk.
cryptorchid
rectal palpation (BSE)
4 major reasons for culling dairy cows
1. more cost effective - 2. powdered milk is in excess production
42. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
oviducts
Reasons for gestation length being affected
dartos muscle
43. Help to signal hormone levels which we need both in the brain right next to each other.
cervix
testis (gonads)
hypothalamus and pituitary gland
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
44. 30 hours after estrus begins
what has to happen for males for copulation to occur
cow ovulation
estrous
Parturition
45. 26 hours after estrus begins
stag
Holstein Cow
ewe ovulation
vagina
46. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
seasonally polyestrous
hormones
pelvis
47. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Jersey Cow
~1 month
reason for seasonal breeding periods
visual evaluation (BSE)
48. Luteolysis happens because of the ____________ hormone
reasons for castration
prostaglandin
urethra
Hard
49. FEED
cervix
visual evaluation (BSE)
why does the cow need fat deposits during pregnancy?
#1 cost in production
50. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
accessory sex glands
Lutinizing Hormone in females
seasonally polyestrous