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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
growth lost from castration methods (knife & band)
spermatogenesis
ewe estrus
Lutinizing Hormone in males
2. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
sow ovulation
penis sizes vs delivering methods
Where livelihood is in agriculture
ewe estrus cycle
3. 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
mare estrus cycle
dry-off time in dairy cattle
effects of BST
Where livelihood is in agriculture
4. 1. brain function - 2. blood flow - 3. willing female
penis sizes vs delivering methods
Bull's fibro-elastic penis
what has to happen for males for copulation to occur
cervix
5. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
burdizzo
vagina
Culls bulls earlier (2 reasons)
Sperm survival specs
6. 30 hours after estrus begins
cow ovulation
polyestrous
elastrator
butterfat
7. Failure to have one testis (gonad) to descend
monorchid
eminal vesicles
vagina
burdizzo
8. Luteolysis happens because of the ____________ hormone
rectal palpation (BSE)
penis proper
prostaglandin
sigmoid flexure
9. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
cow estrus cycle
pelvis
polyestrous
10. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
cowper's gland
4 major reasons for culling dairy cows
Avg. bull specs
ewe gestation
11. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
4 major reasons for culling dairy cows
dartos muscle
Mares
sow estrus
12. 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
mare ovulation
effects of BST
functions of progestrone
cryptorchid
13. The more stressed out the male is - the less sperm he is going to produce
butterfat
Lutinizing Hormone in males
burdizzo
humans: stress level vs sperm
14. Implies the amount of estrogen production
what has to happen for males for copulation to occur
mare gestation
femininity of a heifer
dry-off time in dairy cattle
15. Larger the cow - more milk is produced; smaller the cow - less milk is produced
ewe ovulation
Size of cow in relation to the amount of milk produced
age and castration
dartos muscle
16. 265-285 days
monestrous
Dairy Cattle Gestation
retractor muscles
hormones
17. Not under a timeline - cow can not be sold as steak
mare ovulation
Grading choice
~1 month
functions of progestrone
18. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
hormones
reasons for castration
visual evaluation (BSE)
Avg. bull specs
19. Failure to have both testis (gonads) descend
testis (gonads)
organs used in spermatogenesis
cryptorchid
Hormones from both the fetus and the mom.
20. Duct through penis that carries sperm and urine
effects of BST
uterus
Dairy Cattle Gestation
urethra
21. Actual heat cycle (period)
semen evaluation (BSE)
retractor muscles
estrus
Where livelihood is in agriculture
22. To remove/separate testicles from animal's body before animal reaches puberty
castration
testosterone
growth lost from castration methods (knife & band)
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
23. 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
effects of BST
mare's estrous cycle
behavioral signs of estrus
24. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
Lutinizing Hormone in females
Blood
testis (gonads)
seminiferous tubules
25. When are steers and heifers weaned from bottle feeding?
hormones
mare's estrous cycle
6-8 weeks
prostaglandin
26. Superior genes are _______ to multiply
penis sizes vs delivering methods
Hard
sow estrus
burdizzo
27. 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)
eminal vesicles
feeding a high producing dairy cow
Jersey Cow
Sperm survival specs
28. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Parturition
what has to happen for males for copulation to occur
Lutinizing Hormone in females
reason for seasonal breeding periods
29. Duct through penis that carries sperm and urine
urethra
Follical Stimulating in females
cow estrus
vulva
30. What makes the milk flow through the mammary glands?
Blood
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
van deferens
accessory sex glands
31. Urinary calculi.
mare estrus
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Sperm growth rate
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
32. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
vulva
accessory sex glands
Jersey Cow
Holstein Cow
33. 283 days
cow gestation
epididymis: definition - 3 parts - 4 functions
colostrum
eminal vesicles
34. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
Dairy Cattle milking schedule
cow estrus
4 major reasons for culling dairy cows
uterus
35. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
mare ovulation
Avg. bull specs
Parturition
burdizzo
36. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
visual evaluation (BSE)
growth lost from castration methods (knife & band)
prostaglandin
37. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
seasonally polyestrous
elastrator
cow estrus
Blood
38. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Holstein Cow
epididymis: definition - 3 parts - 4 functions
Dairy calves are removed from cow at birth to...
effects of estrogen
39. Look for infection - split - and rupture of the penis
age and castration
kidney stones also called ________ ___________ can develop in the sigmoid flexure
mare's estrous cycle
penis and prepuce observation (BSE)
40. Front feet and head first. (except for hogs and dogs)
cervix
monorchid
functions of progestrone
normal presentation of the fetus
41. Superior genes are _______ to multiply
Hard
visual evaluation (BSE)
Lutinizing Hormone in males
behavioral signs of estrus
42. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
monestrous
growth lost from castration methods (knife & band)
reasons for castration
sperm cell
43. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
scrotal circumference (BSE)
uterus
butterfat
mare estrus
44. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
6-8 weeks
mare's estrous cycle
why does the cow need fat deposits during pregnancy?
45. Days which have decreasing daylight hours
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46. Urinary calculi.
Jersey Cow
sow gestation
seminiferous tubules
kidney stones also called ________ ___________ can develop in the sigmoid flexure
47. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
effects of BST
things to check for in a breeding soundness exam (BSE)
Mares
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
48. 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)
prostate gland
colostrum
dry matter and water
ewe's estrous cycle
49. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
ewe estrus
cow gestation
sperm cell
Holstein Cow
50. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
purpose of Breeding Soundness Exam (BSE) for males
what has to happen for males for copulation to occur
elastrator
seasonally polyestrous