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Test your basic knowledge |
Dairy Cattle And Reproduction
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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. Contains and regulates the temp of the testes for sperm production
scrotum
Lutinizing Hormone in males
penis proper
cervix
2. 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.
cryptorchid
sow estrus cycle
#1 cost in production
Culls bulls earlier (2 reasons)
3. Produce testosterone. located between the seminiferous tubules
effects of estrogen
Size of cow in relation to the amount of milk produced
feeding a high producing dairy cow
leydid or interstitial cells
4. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
dairy cattle pregnancy check
behavioral signs of estrus
dry matter and water
retractor muscles
5. Superior genes are _______ to multiply
sow gestation
Hard
feeding a high producing dairy cow
van deferens
6. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
hormones
Where livelihood is in agriculture
colostrum
semen evaluation (BSE)
7. Luteolysis happens because of the ____________ hormone
scrotum
ewe gestation
prostaglandin
Follical Stimulating in males
8. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
elastrator
accessory sex glands
growth lost from castration methods (knife & band)
colostrum
9. Larger the cow - more milk is produced; smaller the cow - less milk is produced
why does the cow need fat deposits during pregnancy?
urethra
eminal vesicles
Size of cow in relation to the amount of milk produced
10. Provide nourishment for the developing sperm
humans: stress level vs sperm
1. more cost effective - 2. powdered milk is in excess production
sertoli cells
testis (gonads)
11. To remove/separate testicles from animal's body before animal reaches puberty
castration
oviducts
Dairy Cattle Gestation
dry-off time in dairy cattle
12. 14-19 (17) days
ewe estrus cycle
Hard
Hormones from both the fetus and the mom.
prostaglandin
13. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
testosterone
penis sizes vs delivering methods
Dairy Cattle milking schedule
dairy cattle pregnancy check
14. 19-23 (21) days
dry-off time in dairy cattle
eminal vesicles
sow estrus cycle
Where livelihood is in agriculture
15. (switzerland) 2nd in size and milk production - most muscle -
normal presentation of the fetus
Brown Swiss Cow
humans: stress level vs sperm
mare estrus
16. Urinary calculi.
seminiferous tubules
prostate gland
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Follical Stimulating in males
17. Allows extension of penis without fibro-elastic penis
Dairy Cattle Lactation (standard)
sigmoid flexure
femininity of a heifer
Follical Stimulating in females
18. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
van deferens
Hormones from both the fetus and the mom.
Bull's fibro-elastic penis
seminiferous tubules
19. Animals which have only one estrous cycle (ex: dog - fox)
leydid or interstitial cells
~1 month
monestrous
scrotal circumference (BSE)
20. Front feet and head first. (except for hogs and dogs)
cryptorchid
normal presentation of the fetus
testosterone
kidney stones also called ________ ___________ can develop in the sigmoid flexure
21. Male on one pin and female on other side
dry-off time in dairy cattle
cremaster muscle
libido test (BSE)
Reasons for gestation length being affected
22. 114 days
accessory sex glands
sow gestation
dry matter and water
sow estrus
23. Sperm production
sperm cell
penis sizes vs delivering methods
spermatogenesis
Follical Stimulating in males
24. What about the sperm for a bull which has been castrated but still has testicles?
~1 month
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Dairy Cattle Gestation
Mares
25. 1-2 days
age and castration
Sperm growth rate
ewe estrus
Grading choice
26. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
vagina
Parturition
butterfat
mastitis
27. 283 days
pelvis
cow gestation
elastrator
dry matter and water
28. 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
Culls bulls earlier (2 reasons)
purpose of Breeding Soundness Exam (BSE) for males
castration
29. The more stressed out the male is - the less sperm he is going to produce
ewe estrus cycle
cryptorchid
sertoli cells
humans: stress level vs sperm
30. Why does estrus happen before ovulation?
Where livelihood is in agriculture
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
dry matter and water
humans: stress level vs sperm
31. What helps regulate spermatogenesis?
testosterone
cremaster muscle
cow estrus
Follical Stimulating in females
32. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
#1 cost in production
polyestrous
ewe ovulation
33. Depository for semen during insemination. where urine leaves the body
vagina
Bull's fibro-elastic penis
penis and prepuce observation (BSE)
sigmoid flexure
34. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
butterfat
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
rectal palpation (BSE)
mastitis
35. Contains and regulates the temp of the testes for sperm production
hypothalamus and pituitary gland
scrotum
epididymis: definition - 3 parts - 4 functions
sertoli cells
36. Duct through penis that carries sperm and urine
mare ovulation
urethra
seasonally polyestrous
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
37. 16-20 hours
ewe's estrous cycle
Dairy Cattle milking schedule
cow estrus
behavioral signs of estrus
38. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
Follical Stimulating in females
dairy cattle pregnancy check
vagina
retractor muscles
39. 265-285 days
Dairy Cattle Gestation
effects of estrogen
pelvis
pelvis
40. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
prostaglandin
eminal vesicles
mare gestation
behavioral signs of estrus
41. Start of the reproductive tract for the female. located outside of the body
sow estrus
Culls bulls earlier (2 reasons)
vulva
Lutinizing Hormone in females
42. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
ewe ovulation
elastrator
polyestrous
Follical Stimulating in females
43. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
sperm cell
cow ovulation
butterfat
44. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle Gestation
Avg. bull specs
Dairy Cattle Gestation
Dairy Cattle milking schedule
45. Prevent the cow from getting an infection from the calve
functions of progestrone
Dairy calves are removed from cow at birth to...
1. more cost effective - 2. powdered milk is in excess production
testosterone
46. Days which have increasing daylight hours
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47. To remove/separate testicles from animal's body before animal reaches puberty
cremaster muscle
Dairy Cattle Lactation (standard)
effects of estrogen
castration
48. Prevent the cow from getting an infection from the calve
dartos muscle
Dairy calves are removed from cow at birth to...
Dairy Cattle milking schedule
penis proper
49. Check feet and legs - look for masculine traits in build such as crest and muscling
Dairy Cattle Lactation (standard)
seasonally polyestrous
penis proper
visual evaluation (BSE)
50. Days which have decreasing daylight hours
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