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Test your basic knowledge |
Dairy Cattle And Reproduction
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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. 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.
colostrum
castration
sow estrus cycle
mare gestation
2. 16-20 hours
Brown Swiss Cow
organs used in spermatogenesis
Reasons for gestation length being affected
cow estrus
3. 30 hours after estrus begins
sow gestation
Sperm growth rate
sow estrus
cow ovulation
4. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
feeding a high producing dairy cow
Lutinizing Hormone in females
polyestrous
5. Allows extension of penis without fibro-elastic penis
sigmoid flexure
Where livelihood is in agriculture
hormones
Hard
6. 30 hours after estrus begins
cow ovulation
sow gestation
mastitis
Hard
7. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
effects of BST
pelvis
sertoli cells
8. (LH) causes female's egg to break (her period)
dartos muscle
normal presentation of the fetus
scrotal circumference (BSE)
Lutinizing Hormone in females
9. Depository for semen during insemination. where urine leaves the body
vagina
1. more cost effective - 2. powdered milk is in excess production
estrous
what has to happen for males for copulation to occur
10. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
effects of estrogen
butterfat
sow estrus cycle
cow estrus
11. 336 days
mare gestation
Lutinizing Hormone in males
testosterone
Reasons for gestation length being affected
12. 14-19 (17) days
dry-off time in dairy cattle
ewe estrus cycle
prostate gland
reasons for castration
13. Days which have decreasing daylight hours
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14. (switzerland) 2nd in size and milk production - most muscle -
Dairy Cattle Gestation
Bull's fibro-elastic penis
sow gestation
Brown Swiss Cow
15. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
cow estrus cycle
butterfat
testis (gonads)
feeding a high producing dairy cow
16. (FSH) causes egg to mature in females
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
cow gestation
Follical Stimulating in females
17. Luteolysis happens because of the ____________ hormone
seminiferous tubules
prostaglandin
femininity of a heifer
Where livelihood is in agriculture
18. Prevent the cow from getting an infection from the calve
ewe ovulation
Grading choice
Holstein Cow
Dairy calves are removed from cow at birth to...
19. 1-3 days
sow estrus
Where livelihood is in agriculture
sperm cell
femininity of a heifer
20. Male on one pin and female on other side
what has to happen for males for copulation to occur
libido test (BSE)
effects of BST
organs used in spermatogenesis
21. Start of the reproductive tract for the female. located outside of the body
reasons for castration
prostaglandin
vulva
mare gestation
22. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
hypothalamus and pituitary gland
visual evaluation (BSE)
hormones
ewe estrus
23. (male) pushes the testes outward toward the legs for a cool-down off of the body
Dairy calves are removed from cow at birth to...
accessory sex glands
cremaster muscle
urethra
24. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
4 major reasons for culling dairy cows
testis (gonads)
organs used in spermatogenesis
Dairy Cattle Lactation (standard)
25. 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
normal presentation of the fetus
4 major reasons for culling dairy cows
functions of progestrone
burdizzo
26. 2 month growth cycle. stored in the epididymis of the bull
ewe estrus
Sperm growth rate
#1 cost in production
ewe gestation
27. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
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
Jersey Cow
castration
castration
28. Way to know everything is alright with the breeding male
ewe gestation
cow ovulation
purpose of Breeding Soundness Exam (BSE) for males
Lutinizing Hormone in males
29. 1-2 days
ewe estrus
Grading choice
estrus
reason for seasonal breeding periods
30. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Reasons for gestation length being affected
cowper's gland
mare estrus cycle
uterus
31. ~305 days (altough often longer due to breeding difficulties)
Dairy Cattle Lactation (standard)
ewe estrus
age and castration
dairy cattle pregnancy check
32. Milk is 15% ________ and 85% __________.
Hormones from both the fetus and the mom.
what has to happen for males for copulation to occur
penis sizes vs delivering methods
dry matter and water
33. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
prostaglandin
testis (gonads)
Sperm survival specs
34. What makes the milk flow through the mammary glands?
Dairy Cattle Gestation
Blood
mare's estrous cycle
Bull's fibro-elastic penis
35. 283 days
mare's estrous cycle
prostate gland
cow gestation
Reasons for gestation length being affected
36. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
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
femininity of a heifer
cervix
Where livelihood is in agriculture
37. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Sperm growth rate
testosterone
things to check for in a breeding soundness exam (BSE)
epididymis: definition - 3 parts - 4 functions
38. Not under a timeline - cow can not be sold as steak
elastrator
prostaglandin
Grading choice
penis and prepuce observation (BSE)
39. Milk ~305 days - dry 60 days prior to calving
what has to happen for males for copulation to occur
visual evaluation (BSE)
behavioral signs of estrus
Dairy Cattle milking schedule
40. Look for infection - split - and rupture of the penis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
prostate gland
Brown Swiss Cow
penis and prepuce observation (BSE)
41. 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.
cremaster muscle
Dairy Cattle milking schedule
sigmoid flexure
why does the cow need fat deposits during pregnancy?
42. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
semen evaluation (BSE)
Follical Stimulating in females
Brown Swiss Cow
penis sizes vs delivering methods
43. Actual heat cycle (period)
estrus
#1 cost in production
Blood
dartos muscle
44. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
cremaster muscle
stag
Parturition
burdizzo
45. When are dairy cattle dehorned?
prostaglandin
~1 month
vulva
mare's estrous cycle
46. FEED
epididymis: definition - 3 parts - 4 functions
Dairy Cattle Lactation (standard)
penis proper
#1 cost in production
47. Actual heat cycle (period)
penis and prepuce observation (BSE)
estrus
Follical Stimulating in females
colostrum
48. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
normal presentation of the fetus
6-8 weeks
scrotal circumference (BSE)
hormones
49. 10-37 (21) days
scrotal circumference (BSE)
sow gestation
mare estrus cycle
Hard
50. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
retractor muscles
Where livelihood is in agriculture
Avg. bull specs
eminal vesicles
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