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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. Allows extension of penis without fibro-elastic penis
seasonally polyestrous
Follical Stimulating in males
sigmoid flexure
testosterone
2. Contains and regulates the temp of the testes for sperm production
purpose of Breeding Soundness Exam (BSE) for males
prostate gland
scrotum
estrus
3. 283 days
cryptorchid
cow gestation
growth lost from castration methods (knife & band)
Parturition
4. 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.
rectal palpation (BSE)
Blood
~1 month
colostrum
5. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
mare estrus
testosterone
pelvis
6. 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
epididymis: definition - 3 parts - 4 functions
Lutinizing Hormone in males
Brown Swiss Cow
7. Produce testosterone. located between the seminiferous tubules
sow ovulation
leydid or interstitial cells
seminiferous tubules
cow estrus cycle
8. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
uterus
dartos muscle
Dairy Cattle Lactation (standard)
Avg. bull specs
9. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
mare ovulation
cremaster muscle
retractor muscles
sigmoid flexure
10. Check feet and legs - look for masculine traits in build such as crest and muscling
Dairy Cattle Gestation
Follical Stimulating in males
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
visual evaluation (BSE)
11. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Mares
butterfat
Jersey Cow
seasonally polyestrous
12. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
~1 month
estrous
scrotum
dry-off time in dairy cattle
13. Why does estrus happen before ovulation?
humans: stress level vs sperm
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
cow gestation
Avg. bull specs
14. 336 days
mare gestation
sow estrus cycle
cow estrus
sow ovulation
15. Start of the reproductive tract for the female. located outside of the body
cryptorchid
things to check for in a breeding soundness exam (BSE)
1. more cost effective - 2. powdered milk is in excess production
vulva
16. 114 days
leydid or interstitial cells
Hard
femininity of a heifer
sow gestation
17. 19-23 (21) days
Sperm growth rate
sow estrus cycle
effects of estrogen
van deferens
18. Front feet and head first. (except for hogs and dogs)
scrotal circumference (BSE)
mare gestation
effects of estrogen
normal presentation of the fetus
19. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
sow ovulation
hormones
organs used in spermatogenesis
Lutinizing Hormone in females
20. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
van deferens
retractor muscles
Lutinizing Hormone in males
mare estrus cycle
21. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
polyestrous
penis sizes vs delivering methods
organs used in spermatogenesis
growth lost from castration methods (knife & band)
22. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
Hard
dry matter and water
scrotal circumference (BSE)
oviducts
23. Male on one pin and female on other side
spermatogenesis
age and castration
#1 cost in production
libido test (BSE)
24. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
testis (gonads)
seasonally polyestrous
butterfat
ewe ovulation
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
functions of progestrone
penis sizes vs delivering methods
epididymis: definition - 3 parts - 4 functions
Hormones from both the fetus and the mom.
26. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
accessory sex glands
oviducts
seasonally polyestrous
hormones
27. Animal which has been castrated after puberty
ewe ovulation
effects of estrogen
hormones
stag
28. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
dry matter and water
libido test (BSE)
mare ovulation
Reasons for gestation length being affected
29. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
vulva
polyestrous
testis (gonads)
mare estrus
30. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle milking schedule
mare ovulation
Follical Stimulating in females
sow ovulation
31. Front feet and head first. (except for hogs and dogs)
normal presentation of the fetus
Parturition
spermatogenesis
burdizzo
32. What makes the milk flow through the mammary glands?
cow estrus cycle
mare estrus
Blood
dartos muscle
33. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
cow gestation
testis (gonads)
penis proper
mare ovulation
34. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
spermatogenesis
leydid or interstitial cells
Follical Stimulating in males
oviducts
35. When are dairy cattle dehorned?
Sperm growth rate
scrotal circumference (BSE)
~1 month
prostate gland
36. The more stressed out the male is - the less sperm he is going to produce
Jersey Cow
~1 month
humans: stress level vs sperm
femininity of a heifer
37. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
ewe gestation
accessory sex glands
Follical Stimulating in males
sigmoid flexure
38. Failure to have one testis (gonad) to descend
stag
why does the cow need fat deposits during pregnancy?
monorchid
testosterone
39. 4-6 days
1. more cost effective - 2. powdered milk is in excess production
leydid or interstitial cells
mare estrus
cow estrus
40. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
uterus
testis (gonads)
Size of cow in relation to the amount of milk produced
reasons for castration
41. Animals which have many estrous periods per year (ex: cow - sow)
polyestrous
scrotum
Dairy Cattle Lactation (standard)
monestrous
42. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
cowper's gland
elastrator
feeding a high producing dairy cow
6-8 weeks
43. Contains and regulates the temp of the testes for sperm production
Sperm survival specs
Where livelihood is in agriculture
scrotum
prostate gland
44. Scar tissue plugs up chambers of udder
testosterone
mastitis
Grading choice
seasonally polyestrous
45. 114 days
behavioral signs of estrus
sow estrus
sow gestation
Dairy Cattle Gestation
46. 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.
seminiferous tubules
colostrum
libido test (BSE)
uterus
47. Milk ~305 days - dry 60 days prior to calving
feeding a high producing dairy cow
Hormones from both the fetus and the mom.
semen evaluation (BSE)
Dairy Cattle milking schedule
48. Help to signal hormone levels which we need both in the brain right next to each other.
Dairy calves are removed from cow at birth to...
hypothalamus and pituitary gland
Jersey Cow
sertoli cells
49. 19-23 (21) days
sow estrus cycle
Where livelihood is in agriculture
accessory sex glands
hormones
50. 147 days
effects of BST
retractor muscles
epididymis: definition - 3 parts - 4 functions
ewe gestation