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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
ewe estrus
scrotal circumference (BSE)
testis (gonads)
testosterone
2. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
3. Why Dairy calves are fed powdered milk.
hypothalamus and pituitary gland
1. more cost effective - 2. powdered milk is in excess production
reason for seasonal breeding periods
things to check for in a breeding soundness exam (BSE)
4. 16-20 hours
cow estrus
prostaglandin
functions of progestrone
Follical Stimulating in males
5. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
scrotal circumference (BSE)
Blood
semen evaluation (BSE)
6. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
scrotum
Where livelihood is in agriculture
van deferens
vulva
7. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
dairy cattle pregnancy check
sow estrus cycle
cow ovulation
8. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Reasons for gestation length being affected
Lutinizing Hormone in females
sertoli cells
monestrous
9. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
Lutinizing Hormone in females
vagina
dairy cattle pregnancy check
eminal vesicles
10. Scar tissue plugs up chambers of udder
Hormones from both the fetus and the mom.
Sperm survival specs
mastitis
Mares
11. 283 days
cow gestation
stag
cow ovulation
sigmoid flexure
12. Produce testosterone. located between the seminiferous tubules
sow estrus
humans: stress level vs sperm
testosterone
leydid or interstitial cells
13. 336 days
leydid or interstitial cells
Reasons for gestation length being affected
mare gestation
seasonally polyestrous
14. Start of the reproductive tract for the female. located outside of the body
mare estrus cycle
visual evaluation (BSE)
mare gestation
vulva
15. 30-38 hours after estrus cycle begins
cow estrus cycle
sow ovulation
cow estrus cycle
ewe ovulation
16. Can survive ~7 days in cow. vast majority <48 hours
hypothalamus and pituitary gland
colostrum
sertoli cells
Sperm survival specs
17. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
organs used in spermatogenesis
Where livelihood is in agriculture
cow gestation
Jersey Cow
18. 1. brain function - 2. blood flow - 3. willing female
Sperm survival specs
scrotal circumference (BSE)
what has to happen for males for copulation to occur
Lutinizing Hormone in females
19. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
accessory sex glands
scrotum
penis proper
Dairy calves are removed from cow at birth to...
20. 283 days
cow gestation
Brown Swiss Cow
seasonally polyestrous
Hormones from both the fetus and the mom.
21. Male on one pin and female on other side
kidney stones also called ________ ___________ can develop in the sigmoid flexure
libido test (BSE)
cow gestation
ewe estrus
22. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
sperm cell
Holstein Cow
Dairy Cattle Lactation (standard)
23. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
mare estrus
monorchid
Blood
scrotal circumference (BSE)
24. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
seasonally polyestrous
oviducts
Where livelihood is in agriculture
Dairy Cattle milking schedule
25. Actual heat cycle (period)
~1 month
Dairy Cattle Gestation
femininity of a heifer
estrus
26. Prevent the cow from getting an infection from the calve
Dairy calves are removed from cow at birth to...
penis and prepuce observation (BSE)
butterfat
cowper's gland
27. (LH) causes female's egg to break (her period)
scrotum
Lutinizing Hormone in females
sperm cell
cow estrus cycle
28. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
estrus
pelvis
#1 cost in production
vagina
29. Produce testosterone. located between the seminiferous tubules
Dairy Cattle milking schedule
Parturition
uterus
leydid or interstitial cells
30. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
sow ovulation
Reasons for gestation length being affected
accessory sex glands
Size of cow in relation to the amount of milk produced
31. (LH) stimulates the Leydig cells to produce testosterone
spermatogenesis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
dry-off time in dairy cattle
Lutinizing Hormone in males
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.
Grading choice
6-8 weeks
Culls bulls earlier (2 reasons)
cow ovulation
33. 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.
epididymis: definition - 3 parts - 4 functions
kidney stones also called ________ ___________ can develop in the sigmoid flexure
mare's estrous cycle
uterus
34. Check feet and legs - look for masculine traits in build such as crest and muscling
Avg. bull specs
castration
mare ovulation
visual evaluation (BSE)
35. Duct through penis that carries sperm and urine
1. more cost effective - 2. powdered milk is in excess production
urethra
functions of progestrone
functions of progestrone
36. 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.
uterus
Dairy Cattle milking schedule
Dairy calves are removed from cow at birth to...
age and castration
37. What helps regulate spermatogenesis?
6-8 weeks
sow estrus
testosterone
vagina
38. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
things to check for in a breeding soundness exam (BSE)
penis sizes vs delivering methods
Dairy Cattle Lactation (standard)
penis and prepuce observation (BSE)
39. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Sperm growth rate
rectal palpation (BSE)
colostrum
Follical Stimulating in males
40. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
ewe estrus
4 major reasons for culling dairy cows
Bull's fibro-elastic penis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
41. 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)
Reasons for gestation length being affected
age and castration
monorchid
42. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
4 major reasons for culling dairy cows
vagina
mare estrus cycle
accessory sex glands
43. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
cervix
spermatogenesis
Holstein Cow
sow estrus
44. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
penis proper
cow estrus cycle
hormones
why does the cow need fat deposits during pregnancy?
45. 30-38 hours after estrus cycle begins
visual evaluation (BSE)
van deferens
stag
sow ovulation
46. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
cow estrus
Lutinizing Hormone in males
estrus
Mares
47. Look for infection - split - and rupture of the penis
Holstein Cow
penis and prepuce observation (BSE)
monestrous
oviducts
48. 16-20 hours
ewe estrus cycle
sigmoid flexure
Sperm growth rate
cow estrus
49. Important 'landmark' during palpation
normal presentation of the fetus
Where livelihood is in agriculture
cervix
behavioral signs of estrus
50. Why Dairy calves are fed powdered milk.
mare estrus
1. more cost effective - 2. powdered milk is in excess production
Culls bulls earlier (2 reasons)
mare's estrous cycle