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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.
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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. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
Parturition
Blood
accessory sex glands
retractor muscles
2. ~305 days (altough often longer due to breeding difficulties)
Avg. bull specs
Dairy Cattle Lactation (standard)
sow ovulation
retractor muscles
3. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
Reasons for gestation length being affected
cow estrus
kidney stones also called ________ ___________ can develop in the sigmoid flexure
4. Scar tissue plugs up chambers of udder
femininity of a heifer
mastitis
uterus
scrotal circumference (BSE)
5. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
humans: stress level vs sperm
rectal palpation (BSE)
sow gestation
ewe's estrous cycle
6. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
accessory sex glands
penis sizes vs delivering methods
ewe estrus
Hard
7. 147 days
seminiferous tubules
ewe gestation
sow estrus cycle
ewe estrus cycle
8. When are steers and heifers weaned from bottle feeding?
Dairy Cattle milking schedule
mare estrus
effects of estrogen
6-8 weeks
9. 19-23 (21) days
monorchid
stag
why does the cow need fat deposits during pregnancy?
cow estrus cycle
10. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Hard
spermatogenesis
Mares
polyestrous
11. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
semen evaluation (BSE)
sow estrus
effects of estrogen
Dairy Cattle Gestation
12. Animals which have many estrous periods per year (ex: cow - sow)
6-8 weeks
polyestrous
ewe gestation
Mares
13. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
mastitis
dry-off time in dairy cattle
spermatogenesis
Mares
14. Implies the amount of estrogen production
Follical Stimulating in females
sow gestation
ewe ovulation
femininity of a heifer
15. What about the sperm for a bull which has been castrated but still has testicles?
Hormones from both the fetus and the mom.
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
stag
mare ovulation
16. (FSH) causes egg to mature in females
4 major reasons for culling dairy cows
Follical Stimulating in females
sow ovulation
mare ovulation
17. 147 days
ewe gestation
what has to happen for males for copulation to occur
Mares
leydid or interstitial cells
18. 14-19 (17) days
cow estrus cycle
ewe estrus cycle
sow gestation
Brown Swiss Cow
19. Not under a timeline - cow can not be sold as steak
Lutinizing Hormone in females
normal presentation of the fetus
Size of cow in relation to the amount of milk produced
Grading choice
20. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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21. Sperm is produced here
seminiferous tubules
Parturition
Size of cow in relation to the amount of milk produced
eminal vesicles
22. Depository for semen during insemination. where urine leaves the body
spermatogenesis
seminiferous tubules
vagina
why does the cow need fat deposits during pregnancy?
23. Look for infection - split - and rupture of the penis
mare ovulation
Sperm growth rate
penis and prepuce observation (BSE)
why does the cow need fat deposits during pregnancy?
24. 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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25. (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
organs used in spermatogenesis
sow estrus
epididymis: definition - 3 parts - 4 functions
Hard
26. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
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
urethra
dry matter and water
27. 30 hours after estrus begins
cow ovulation
#1 cost in production
pelvis
elastrator
28. Prevent the cow from getting an infection from the calve
mare estrus cycle
Dairy calves are removed from cow at birth to...
libido test (BSE)
hormones
29. Failure to have one testis (gonad) to descend
monorchid
epididymis: definition - 3 parts - 4 functions
vagina
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
30. 10-37 (21) days
sperm cell
dry matter and water
Brown Swiss Cow
mare estrus cycle
31. Days which have increasing daylight hours
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32. 114 days
mare ovulation
sow gestation
1. more cost effective - 2. powdered milk is in excess production
van deferens
33. (LH) causes female's egg to break (her period)
eminal vesicles
cow estrus cycle
Lutinizing Hormone in females
dry matter and water
34. 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
Where livelihood is in agriculture
functions of progestrone
prostaglandin
scrotum
35. Birthing process (termination of gestation)
van deferens
spermatogenesis
dartos muscle
Parturition
36. Luteolysis happens because of the ____________ hormone
cow estrus cycle
prostaglandin
Sperm growth rate
dry matter and water
37. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
pelvis
testis (gonads)
38. 16-20 hours
monorchid
cow estrus
testis (gonads)
Reasons for gestation length being affected
39. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
castration
Dairy calves are removed from cow at birth to...
purpose of Breeding Soundness Exam (BSE) for males
40. Depository for semen during insemination. where urine leaves the body
seminiferous tubules
mare gestation
van deferens
vagina
41. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
reason for seasonal breeding periods
visual evaluation (BSE)
Lutinizing Hormone in males
sow estrus
42. Start of the reproductive tract for the female. located outside of the body
vulva
Dairy Cattle milking schedule
scrotum
Jersey Cow
43. Important 'landmark' during palpation
cervix
mare estrus cycle
epididymis: definition - 3 parts - 4 functions
stag
44. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
butterfat
behavioral signs of estrus
dry-off time in dairy cattle
45. Provide nourishment for the developing sperm
age and castration
6-8 weeks
sertoli cells
cow estrus cycle
46. Parturition is controlled by...
testosterone
Follical Stimulating in females
Hormones from both the fetus and the mom.
semen evaluation (BSE)
47. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
seasonally polyestrous
Lutinizing Hormone in males
sigmoid flexure
48. Why Dairy calves are fed powdered milk.
1. more cost effective - 2. powdered milk is in excess production
sow gestation
Dairy calves are removed from cow at birth to...
Dairy Cattle milking schedule
49. When are steers and heifers weaned from bottle feeding?
hypothalamus and pituitary gland
6-8 weeks
ewe estrus
sertoli cells
50. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
burdizzo
testis (gonads)
sertoli cells
mare ovulation
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