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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. 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
functions of progestrone
why does the cow need fat deposits during pregnancy?
growth lost from castration methods (knife & band)
Parturition
2. What makes the milk flow through the mammary glands?
Blood
mastitis
Parturition
cryptorchid
3. Failure to have both testis (gonads) descend
cryptorchid
Hard
purpose of Breeding Soundness Exam (BSE) for males
mare's estrous cycle
4. 1-3 days
mare estrus cycle
Size of cow in relation to the amount of milk produced
sow estrus
epididymis: definition - 3 parts - 4 functions
5. Front feet and head first. (except for hogs and dogs)
hypothalamus and pituitary gland
normal presentation of the fetus
monorchid
testis (gonads)
6. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
visual evaluation (BSE)
Hormones from both the fetus and the mom.
Mares
monorchid
7. 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
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
functions of progestrone
Parturition
Dairy Cattle Gestation
8. 26 hours after estrus begins
age and castration
ewe ovulation
Parturition
Hormones from both the fetus and the mom.
9. (male) pushes the testes outward toward the legs for a cool-down off of the body
Follical Stimulating in females
cremaster muscle
retractor muscles
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
10. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
Jersey Cow
Lutinizing Hormone in females
vulva
11. Sperm is produced here
cowper's gland
Reasons for gestation length being affected
seminiferous tubules
ewe estrus cycle
12. Way to know everything is alright with the breeding male
behavioral signs of estrus
purpose of Breeding Soundness Exam (BSE) for males
seasonally polyestrous
monestrous
13. Superior genes are _______ to multiply
Hard
Grading choice
why does the cow need fat deposits during pregnancy?
cow estrus cycle
14. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
burdizzo
scrotal circumference (BSE)
mare gestation
Follical Stimulating in females
15. Prevent the cow from getting an infection from the calve
reason for seasonal breeding periods
Dairy calves are removed from cow at birth to...
sow estrus
kidney stones also called ________ ___________ can develop in the sigmoid flexure
16. 2 month growth cycle. stored in the epididymis of the bull
sertoli cells
testis (gonads)
retractor muscles
Sperm growth rate
17. Male on one pin and female on other side
hormones
rectal palpation (BSE)
libido test (BSE)
sow gestation
18. 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
dairy cattle pregnancy check
effects of BST
Dairy Cattle milking schedule
functions of progestrone
19. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
Follical Stimulating in males
retractor muscles
estrus
20. (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
reasons for castration
epididymis: definition - 3 parts - 4 functions
cow gestation
Grading choice
21. Luteolysis happens because of the ____________ hormone
scrotum
dartos muscle
Culls bulls earlier (2 reasons)
prostaglandin
22. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
butterfat
uterus
dairy cattle pregnancy check
mare gestation
23. 1-2 days
cow ovulation
cow estrus
rectal palpation (BSE)
ewe estrus
24. 16-20 hours
penis proper
accessory sex glands
monorchid
cow estrus
25. 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.
dry-off time in dairy cattle
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
colostrum
elastrator
26. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
Brown Swiss Cow
1. more cost effective - 2. powdered milk is in excess production
Sperm survival specs
27. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
humans: stress level vs sperm
ewe's estrous cycle
Grading choice
pelvis
28. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
sow ovulation
kidney stones also called ________ ___________ can develop in the sigmoid flexure
monestrous
29. Contains and regulates the temp of the testes for sperm production
sow estrus
cow estrus
scrotum
~1 month
30. Scar tissue plugs up chambers of udder
reasons for castration
mastitis
ewe estrus cycle
Avg. bull specs
31. 265-285 days
behavioral signs of estrus
Dairy Cattle Gestation
stag
Bull's fibro-elastic penis
32. 24 hours before end of estrus cycle
Dairy Cattle Lactation (standard)
mare estrus
Size of cow in relation to the amount of milk produced
mare ovulation
33. 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
vulva
effects of BST
leydid or interstitial cells
accessory sex glands
34. The more stressed out the male is - the less sperm he is going to produce
mastitis
scrotum
humans: stress level vs sperm
cowper's gland
35. Animal which has been castrated after puberty
cowper's gland
stag
scrotal circumference (BSE)
Dairy Cattle milking schedule
36. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
hormones
libido test (BSE)
~1 month
sow estrus cycle
37. Depository for semen during insemination. where urine leaves the body
functions of progestrone
vagina
dairy cattle pregnancy check
burdizzo
38. 4-6 days
Jersey Cow
mare estrus
van deferens
visual evaluation (BSE)
39. Superior genes are _______ to multiply
Hard
libido test (BSE)
epididymis: definition - 3 parts - 4 functions
testosterone
40. Animal which has been castrated after puberty
visual evaluation (BSE)
penis proper
stag
penis and prepuce observation (BSE)
41. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
elastrator
oviducts
vagina
effects of estrogen
42. 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.
sertoli cells
behavioral signs of estrus
uterus
ewe estrus cycle
43. Days which have increasing daylight hours
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44. Look for infection - split - and rupture of the penis
ewe estrus cycle
penis and prepuce observation (BSE)
cow ovulation
testis (gonads)
45. 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)
reason for seasonal breeding periods
ewe's estrous cycle
effects of BST
feeding a high producing dairy cow
46. What helps regulate spermatogenesis?
hypothalamus and pituitary gland
testosterone
estrus
mare's estrous cycle
47. 26 hours after estrus begins
Brown Swiss Cow
ewe ovulation
monorchid
leydid or interstitial cells
48. 1. brain function - 2. blood flow - 3. willing female
dry matter and water
reason for seasonal breeding periods
what has to happen for males for copulation to occur
cow ovulation
49. 283 days
cow gestation
mare gestation
ewe estrus
cowper's gland
50. Important 'landmark' during palpation
cervix
scrotum
testosterone
humans: stress level vs sperm