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Test your basic knowledge |
Dairy Cattle And Reproduction
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Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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study here
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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. 19-23 (21) days
femininity of a heifer
effects of estrogen
Size of cow in relation to the amount of milk produced
sow estrus cycle
2. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
ewe ovulation
sperm cell
Bull's fibro-elastic penis
behavioral signs of estrus
3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
ewe's estrous cycle
things to check for in a breeding soundness exam (BSE)
6-8 weeks
kidney stones also called ________ ___________ can develop in the sigmoid flexure
4. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
Dairy Cattle Lactation (standard)
penis sizes vs delivering methods
growth lost from castration methods (knife & band)
Dairy Cattle milking schedule
5. Sperm production
spermatogenesis
Follical Stimulating in males
colostrum
ewe gestation
6. ~305 days (altough often longer due to breeding difficulties)
cowper's gland
scrotal circumference (BSE)
Culls bulls earlier (2 reasons)
Dairy Cattle Lactation (standard)
7. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
seasonally polyestrous
urethra
Lutinizing Hormone in females
eminal vesicles
8. 30-38 hours after estrus cycle begins
Bull's fibro-elastic penis
Size of cow in relation to the amount of milk produced
colostrum
sow ovulation
9. Superior genes are _______ to multiply
Hard
femininity of a heifer
kidney stones also called ________ ___________ can develop in the sigmoid flexure
scrotal circumference (BSE)
10. 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)
femininity of a heifer
effects of estrogen
prostate gland
penis proper
11. Check feet and legs - look for masculine traits in build such as crest and muscling
oviducts
visual evaluation (BSE)
seasonally polyestrous
Hard
12. Failure to have both testis (gonads) descend
pelvis
Hormones from both the fetus and the mom.
cryptorchid
growth lost from castration methods (knife & band)
13. Larger the cow - more milk is produced; smaller the cow - less milk is produced
why does the cow need fat deposits during pregnancy?
Size of cow in relation to the amount of milk produced
testosterone
why does the cow need fat deposits during pregnancy?
14. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Jersey Cow
ewe ovulation
mare estrus cycle
Size of cow in relation to the amount of milk produced
15. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
normal presentation of the fetus
6-8 weeks
age and castration
cow gestation
16. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
cryptorchid
reason for seasonal breeding periods
effects of BST
17. Microscopic - make sure not sterile - very few bulls are actually tested
semen evaluation (BSE)
sertoli cells
dry-off time in dairy cattle
Brown Swiss Cow
18. Sperm production
Blood
sow estrus cycle
prostate gland
spermatogenesis
19. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
normal presentation of the fetus
estrous
monorchid
retractor muscles
20. Implies the amount of estrogen production
growth lost from castration methods (knife & band)
seasonally polyestrous
sow ovulation
femininity of a heifer
21. 45-60 days after breeding; re-breed as required
Grading choice
dairy cattle pregnancy check
Follical Stimulating in males
why does the cow need fat deposits during pregnancy?
22. (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
elastrator
4 major reasons for culling dairy cows
epididymis: definition - 3 parts - 4 functions
Lutinizing Hormone in females
23. Milk ~305 days - dry 60 days prior to calving
sow estrus cycle
Dairy Cattle milking schedule
effects of BST
mare estrus
24. Provide nourishment for the developing sperm
cow estrus
Mares
sertoli cells
Dairy Cattle Gestation
25. When are steers and heifers weaned from bottle feeding?
6-8 weeks
Dairy Cattle Gestation
dry matter and water
what has to happen for males for copulation to occur
26. 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
cryptorchid
Follical Stimulating in females
effects of BST
normal presentation of the fetus
27. Important 'landmark' during palpation
scrotum
cervix
Hormones from both the fetus and the mom.
ewe gestation
28. 30 hours after estrus begins
dry-off time in dairy cattle
leydid or interstitial cells
cow ovulation
penis sizes vs delivering methods
29. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
4 major reasons for culling dairy cows
Avg. bull specs
cow estrus cycle
30. 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)
Where livelihood is in agriculture
ewe estrus cycle
penis and prepuce observation (BSE)
31. (male) pushes the testes upward toward the body for warmth or protection
ewe ovulation
dartos muscle
penis sizes vs delivering methods
humans: stress level vs sperm
32. (LH) causes female's egg to break (her period)
monorchid
normal presentation of the fetus
mare gestation
Lutinizing Hormone in females
33. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
kidney stones also called ________ ___________ can develop in the sigmoid flexure
oviducts
hormones
epididymis: definition - 3 parts - 4 functions
34. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Sperm growth rate
ewe gestation
dry-off time in dairy cattle
reason for seasonal breeding periods
35. 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.
scrotal circumference (BSE)
Hormones from both the fetus and the mom.
penis sizes vs delivering methods
colostrum
36. 26 hours after estrus begins
ewe ovulation
prostate gland
humans: stress level vs sperm
prostate gland
37. Failure to have both testis (gonads) descend
dairy cattle pregnancy check
cryptorchid
van deferens
Blood
38. Provide nourishment for the developing sperm
6-8 weeks
prostate gland
sertoli cells
rectal palpation (BSE)
39. 265-285 days
functions of progestrone
Dairy Cattle Gestation
oviducts
effects of estrogen
40. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
leydid or interstitial cells
dry matter and water
Follical Stimulating in females
41. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
sow estrus
dartos muscle
stag
seasonally polyestrous
42. Luteolysis happens because of the ____________ hormone
ewe estrus cycle
estrous
prostaglandin
Mares
43. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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44. 14-19 (17) days
effects of BST
estrous
ewe estrus cycle
seasonally polyestrous
45. Actual heat cycle (period)
mare estrus cycle
age and castration
Culls bulls earlier (2 reasons)
estrus
46. 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.
Follical Stimulating in males
~1 month
semen evaluation (BSE)
uterus
47. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Dairy Cattle milking schedule
behavioral signs of estrus
kidney stones also called ________ ___________ can develop in the sigmoid flexure
castration
48. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
Dairy Cattle milking schedule
estrous
sigmoid flexure
49. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
seasonally polyestrous
retractor muscles
prostaglandin
Brown Swiss Cow
50. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
things to check for in a breeding soundness exam (BSE)
burdizzo
hormones
seminiferous tubules
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