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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. ~305 days (altough often longer due to breeding difficulties)
#1 cost in production
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Dairy Cattle Lactation (standard)
organs used in spermatogenesis
2. 4-6 days
estrous
libido test (BSE)
monestrous
mare estrus
3. Not under a timeline - cow can not be sold as steak
rectal palpation (BSE)
Dairy calves are removed from cow at birth to...
dairy cattle pregnancy check
Grading choice
4. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
rectal palpation (BSE)
butterfat
mastitis
Mares
5. 265-285 days
Dairy Cattle Gestation
elastrator
sow ovulation
Reasons for gestation length being affected
6. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
monorchid
Bull's fibro-elastic penis
femininity of a heifer
7. 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.
prostate gland
ewe's estrous cycle
cow gestation
uterus
8. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Reasons for gestation length being affected
effects of estrogen
1. more cost effective - 2. powdered milk is in excess production
penis proper
9. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
cervix
reason for seasonal breeding periods
ewe estrus
Lutinizing Hormone in males
10. 2 month growth cycle. stored in the epididymis of the bull
Sperm growth rate
organs used in spermatogenesis
accessory sex glands
testis (gonads)
11. To remove/separate testicles from animal's body before animal reaches puberty
libido test (BSE)
sertoli cells
sow ovulation
castration
12. When are steers and heifers weaned from bottle feeding?
Sperm survival specs
6-8 weeks
organs used in spermatogenesis
ewe gestation
13. Contains and regulates the temp of the testes for sperm production
cow estrus
scrotum
estrous
Where livelihood is in agriculture
14. Look for infection - split - and rupture of the penis
Bull's fibro-elastic penis
leydid or interstitial cells
Hard
penis and prepuce observation (BSE)
15. Animals which have only one estrous cycle (ex: dog - fox)
ewe's estrous cycle
monestrous
Culls bulls earlier (2 reasons)
mastitis
16. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
cow estrus cycle
things to check for in a breeding soundness exam (BSE)
burdizzo
libido test (BSE)
17. Allows extension of penis without fibro-elastic penis
age and castration
sigmoid flexure
burdizzo
hormones
18. Urinary calculi.
pelvis
seasonally polyestrous
Lutinizing Hormone in males
kidney stones also called ________ ___________ can develop in the sigmoid flexure
19. FEED
pelvis
ewe's estrous cycle
#1 cost in production
uterus
20. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
6-8 weeks
penis and prepuce observation (BSE)
humans: stress level vs sperm
age and castration
21. Days which have increasing daylight hours
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22. 30-38 hours after estrus cycle begins
cryptorchid
Lutinizing Hormone in males
van deferens
sow ovulation
23. Failure to have both testis (gonads) descend
sow ovulation
vagina
cryptorchid
accessory sex glands
24. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
Sperm growth rate
colostrum
oviducts
25. Microscopic - make sure not sterile - very few bulls are actually tested
semen evaluation (BSE)
#1 cost in production
pelvis
dartos muscle
26. 1-2 days
dartos muscle
cremaster muscle
mare gestation
ewe estrus
27. Prevent the cow from getting an infection from the calve
cow ovulation
dairy cattle pregnancy check
Dairy calves are removed from cow at birth to...
accessory sex glands
28. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
penis and prepuce observation (BSE)
mastitis
Dairy calves are removed from cow at birth to...
things to check for in a breeding soundness exam (BSE)
29. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
mare estrus cycle
Grading choice
rectal palpation (BSE)
30. Milk is 15% ________ and 85% __________.
sow ovulation
dry matter and water
ewe estrus
colostrum
31. 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
effects of BST
retractor muscles
Brown Swiss Cow
cervix
32. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
Size of cow in relation to the amount of milk produced
ewe ovulation
sow estrus cycle
accessory sex glands
33. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
scrotum
organs used in spermatogenesis
prostaglandin
cowper's gland
34. ~60 days before calving
mare estrus cycle
cervix
sperm cell
dry-off time in dairy cattle
35. What makes the milk flow through the mammary glands?
penis proper
Lutinizing Hormone in males
retractor muscles
Blood
36. (switzerland) 2nd in size and milk production - most muscle -
ewe's estrous cycle
Brown Swiss Cow
spermatogenesis
cow ovulation
37. Provide nourishment for the developing sperm
sertoli cells
Reasons for gestation length being affected
Hormones from both the fetus and the mom.
cowper's gland
38. Allows extension of penis without fibro-elastic penis
eminal vesicles
Bull's fibro-elastic penis
Follical Stimulating in females
sigmoid flexure
39. 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
monorchid
Grading choice
functions of progestrone
epididymis: definition - 3 parts - 4 functions
40. Failure to have both testis (gonads) descend
reasons for castration
visual evaluation (BSE)
mare ovulation
cryptorchid
41. Help to signal hormone levels which we need both in the brain right next to each other.
mare's estrous cycle
scrotum
hypothalamus and pituitary gland
why does the cow need fat deposits during pregnancy?
42. Sperm is produced here
van deferens
seminiferous tubules
sow gestation
sigmoid flexure
43. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
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
1. more cost effective - 2. powdered milk is in excess production
oviducts
eminal vesicles
44. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
spermatogenesis
urethra
oviducts
Where livelihood is in agriculture
45. Important 'landmark' during palpation
monestrous
Lutinizing Hormone in females
Reasons for gestation length being affected
cervix
46. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Mares
seasonally polyestrous
Follical Stimulating in males
reasons for castration
47. 265-285 days
oviducts
seasonally polyestrous
ewe ovulation
Dairy Cattle Gestation
48. 30 hours after estrus begins
mare estrus cycle
cow ovulation
Follical Stimulating in males
Size of cow in relation to the amount of milk produced
49. Animal which has been castrated after puberty
Lutinizing Hormone in males
stag
mare estrus
Where livelihood is in agriculture
50. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
effects of estrogen
ewe's estrous cycle
penis sizes vs delivering methods