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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. (male) pushes the testes outward toward the legs for a cool-down off of the body
Grading choice
sertoli cells
cremaster muscle
mare estrus
2. 10-37 (21) days
mare estrus cycle
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
Sperm growth rate
Parturition
3. Contains and regulates the temp of the testes for sperm production
4 major reasons for culling dairy cows
Mares
scrotum
kidney stones also called ________ ___________ can develop in the sigmoid flexure
4. 30-38 hours after estrus cycle begins
leydid or interstitial cells
sow ovulation
testis (gonads)
semen evaluation (BSE)
5. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
seminiferous tubules
van deferens
organs used in spermatogenesis
ewe gestation
6. Milk ~305 days - dry 60 days prior to calving
ewe estrus cycle
Dairy Cattle milking schedule
ewe ovulation
retractor muscles
7. 24 hours before end of estrus cycle
mare ovulation
things to check for in a breeding soundness exam (BSE)
oviducts
humans: stress level vs sperm
8. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Jersey Cow
rectal palpation (BSE)
cow gestation
cow estrus
9. 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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10. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
stag
sertoli cells
cremaster muscle
11. Implies the amount of estrogen production
femininity of a heifer
mare gestation
sow ovulation
cervix
12. Luteolysis happens because of the ____________ hormone
penis and prepuce observation (BSE)
Lutinizing Hormone in males
prostaglandin
penis sizes vs delivering methods
13. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
prostaglandin
Follical Stimulating in males
hormones
hypothalamus and pituitary gland
14. Duct through penis that carries sperm and urine
Hard
penis proper
scrotum
urethra
15. 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
Dairy calves are removed from cow at birth to...
normal presentation of the fetus
age and castration
functions of progestrone
16. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
Reasons for gestation length being affected
ewe estrus
hormones
17. Luteolysis happens because of the ____________ hormone
organs used in spermatogenesis
Hard
prostaglandin
urethra
18. Depository for semen during insemination. where urine leaves the body
normal presentation of the fetus
vagina
#1 cost in production
spermatogenesis
19. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
mare gestation
mastitis
epididymis: definition - 3 parts - 4 functions
butterfat
20. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
epididymis: definition - 3 parts - 4 functions
Jersey Cow
testis (gonads)
cow gestation
21. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Sperm survival specs
functions of progestrone
accessory sex glands
Avg. bull specs
22. Look for infection - split - and rupture of the penis
normal presentation of the fetus
penis and prepuce observation (BSE)
vulva
penis sizes vs delivering methods
23. Allows extension of penis without fibro-elastic penis
Grading choice
sigmoid flexure
effects of estrogen
oviducts
24. Animals which have only one estrous cycle (ex: dog - fox)
cryptorchid
monestrous
mare's estrous cycle
scrotal circumference (BSE)
25. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
sertoli cells
cow ovulation
Holstein Cow
oviducts
26. Not under a timeline - cow can not be sold as steak
urethra
Grading choice
mare estrus
vulva
27. Implies the amount of estrogen production
femininity of a heifer
dartos muscle
Follical Stimulating in females
Follical Stimulating in males
28. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
estrus
reason for seasonal breeding periods
what has to happen for males for copulation to occur
Where livelihood is in agriculture
29. Milk is 15% ________ and 85% __________.
cervix
uterus
dry matter and water
accessory sex glands
30. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Parturition
Dairy Cattle Gestation
Jersey Cow
dry matter and water
31. 265-285 days
Parturition
Dairy Cattle Gestation
sertoli cells
Blood
32. 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.
Culls bulls earlier (2 reasons)
colostrum
prostate gland
Mares
33. 19-23 (21) days
seminiferous tubules
sow estrus cycle
Avg. bull specs
burdizzo
34. 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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35. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
cremaster muscle
normal presentation of the fetus
effects of estrogen
36. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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37. 19-23 (21) days
testis (gonads)
Parturition
mare's estrous cycle
sow estrus cycle
38. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
uterus
age and castration
sperm cell
mare gestation
39. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
sow gestation
accessory sex glands
mare gestation
dairy cattle pregnancy check
40. Prevent the cow from getting an infection from the calve
elastrator
penis sizes vs delivering methods
sperm cell
Dairy calves are removed from cow at birth to...
41. Produce testosterone. located between the seminiferous tubules
what has to happen for males for copulation to occur
leydid or interstitial cells
age and castration
prostate gland
42. 26 hours after estrus begins
why does the cow need fat deposits during pregnancy?
ewe ovulation
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
behavioral signs of estrus
43. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
reasons for castration
estrus
Hard
Sperm survival specs
44. What about the sperm for a bull which has been castrated but still has testicles?
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
cervix
normal presentation of the fetus
Dairy calves are removed from cow at birth to...
45. 14-19 (17) days
mare estrus cycle
ewe estrus cycle
growth lost from castration methods (knife & band)
behavioral signs of estrus
46. 147 days
sperm cell
sigmoid flexure
sow gestation
ewe gestation
47. Superior genes are _______ to multiply
sow estrus cycle
cow estrus
elastrator
Hard
48. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
hypothalamus and pituitary gland
dry matter and water
testis (gonads)
49. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
estrus
effects of BST
Follical Stimulating in males
things to check for in a breeding soundness exam (BSE)
50. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
Dairy Cattle Gestation
uterus
scrotal circumference (BSE)
feeding a high producing dairy cow