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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. 1-2 days
ewe estrus
testosterone
cow gestation
ewe estrus cycle
2. 336 days
mare gestation
Size of cow in relation to the amount of milk produced
visual evaluation (BSE)
Dairy calves are removed from cow at birth to...
3. Why does estrus happen before ovulation?
Reasons for gestation length being affected
cow estrus cycle
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
hormones
4. Superior genes are _______ to multiply
Hard
dry matter and water
uterus
purpose of Breeding Soundness Exam (BSE) for males
5. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
Size of cow in relation to the amount of milk produced
cow gestation
mare gestation
6. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
Brown Swiss Cow
sperm cell
cow ovulation
retractor muscles
7. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
testosterone
effects of estrogen
Hormones from both the fetus and the mom.
8. 4-6 days
mare estrus
~1 month
seminiferous tubules
Dairy Cattle Gestation
9. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
prostate gland
testis (gonads)
Dairy Cattle milking schedule
eminal vesicles
10. (FSH) causes egg to mature in females
libido test (BSE)
monorchid
Follical Stimulating in females
sperm cell
11. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
cremaster muscle
functions of progestrone
urethra
12. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
leydid or interstitial cells
Parturition
sperm cell
dry-off time in dairy cattle
13. Start of the reproductive tract for the female. located outside of the body
Holstein Cow
Blood
~1 month
vulva
14. 283 days
oviducts
cow gestation
feeding a high producing dairy cow
ewe estrus
15. Milk ~305 days - dry 60 days prior to calving
hypothalamus and pituitary gland
monorchid
~1 month
Dairy Cattle milking schedule
16. Why Dairy calves are fed powdered milk.
Brown Swiss Cow
leydid or interstitial cells
1. more cost effective - 2. powdered milk is in excess production
libido test (BSE)
17. Can survive ~7 days in cow. vast majority <48 hours
Dairy calves are removed from cow at birth to...
Lutinizing Hormone in females
reasons for castration
Sperm survival specs
18. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
Sperm survival specs
organs used in spermatogenesis
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
19. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
leydid or interstitial cells
sow estrus cycle
van deferens
ewe gestation
20. 30-38 hours after estrus cycle begins
sow ovulation
4 major reasons for culling dairy cows
vagina
scrotal circumference (BSE)
21. Not under a timeline - cow can not be sold as steak
cow estrus
Grading choice
eminal vesicles
butterfat
22. 147 days
vulva
femininity of a heifer
vagina
ewe gestation
23. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
cow ovulation
sow ovulation
colostrum
effects of estrogen
24. 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)
normal presentation of the fetus
van deferens
rectal palpation (BSE)
prostate gland
25. The more stressed out the male is - the less sperm he is going to produce
urethra
mare estrus
castration
humans: stress level vs sperm
26. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
why does the cow need fat deposits during pregnancy?
Blood
prostate gland
27. 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
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
uterus
age and castration
28. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
estrus
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
dry matter and water
29. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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30. Sperm production
things to check for in a breeding soundness exam (BSE)
sertoli cells
spermatogenesis
penis proper
31. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
estrous
Sperm growth rate
mare estrus cycle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
32. Days which have increasing daylight hours
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33. (male) pushes the testes outward toward the legs for a cool-down off of the body
feeding a high producing dairy cow
femininity of a heifer
cremaster muscle
castration
34. FEED
eminal vesicles
#1 cost in production
normal presentation of the fetus
ewe ovulation
35. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
epididymis: definition - 3 parts - 4 functions
urethra
reason for seasonal breeding periods
dry matter and water
36. Way to know everything is alright with the breeding male
mare's estrous cycle
rectal palpation (BSE)
purpose of Breeding Soundness Exam (BSE) for males
estrus
37. 16-20 hours
cow estrus
butterfat
leydid or interstitial cells
castration
38. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
#1 cost in production
sperm cell
cervix
4 major reasons for culling dairy cows
39. 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
seminiferous tubules
vagina
Where livelihood is in agriculture
40. Milk is 15% ________ and 85% __________.
pelvis
dry matter and water
Lutinizing Hormone in females
Dairy Cattle Gestation
41. 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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42. Produce testosterone. located between the seminiferous tubules
growth lost from castration methods (knife & band)
leydid or interstitial cells
oviducts
dairy cattle pregnancy check
43. Start of the reproductive tract for the female. located outside of the body
vulva
libido test (BSE)
purpose of Breeding Soundness Exam (BSE) for males
cow estrus
44. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
prostate gland
Where livelihood is in agriculture
kidney stones also called ________ ___________ can develop in the sigmoid flexure
pelvis
45. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
penis and prepuce observation (BSE)
Mares
Dairy calves are removed from cow at birth to...
46. Can survive ~7 days in cow. vast majority <48 hours
dairy cattle pregnancy check
monorchid
Sperm survival specs
dairy cattle pregnancy check
47. What helps regulate spermatogenesis?
rectal palpation (BSE)
vulva
age and castration
testosterone
48. Luteolysis happens because of the ____________ hormone
cow estrus cycle
prostaglandin
dry matter and water
urethra
49. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
sperm cell
Reasons for gestation length being affected
elastrator
ewe estrus
50. 1-3 days
elastrator
mastitis
sow estrus
effects of estrogen