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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. 30-38 hours after estrus cycle begins
growth lost from castration methods (knife & band)
sow ovulation
prostate gland
mare's estrous cycle
2. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
4 major reasons for culling dairy cows
1. more cost effective - 2. powdered milk is in excess production
Reasons for gestation length being affected
3. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
ewe estrus cycle
behavioral signs of estrus
cow ovulation
4. (male) pushes the testes outward toward the legs for a cool-down off of the body
retractor muscles
prostate gland
cremaster muscle
Follical Stimulating in females
5. 19-23 (21) days
cow estrus cycle
dry-off time in dairy cattle
what has to happen for males for copulation to occur
Parturition
6. 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
uterus
cow ovulation
mare ovulation
7. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
estrus
mare ovulation
mare gestation
8. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
why does the cow need fat deposits during pregnancy?
semen evaluation (BSE)
age and castration
castration
9. Prevent the cow from getting an infection from the calve
Dairy calves are removed from cow at birth to...
oviducts
polyestrous
sigmoid flexure
10. 147 days
oviducts
Sperm growth rate
Jersey Cow
ewe gestation
11. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
cowper's gland
cryptorchid
effects of estrogen
why does the cow need fat deposits during pregnancy?
12. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Hard
sperm cell
Dairy Cattle Gestation
effects of estrogen
13. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
ewe ovulation
dry-off time in dairy cattle
Dairy Cattle Lactation (standard)
14. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
ewe estrus
accessory sex glands
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Brown Swiss Cow
15. (LH) causes female's egg to break (her period)
Avg. bull specs
Lutinizing Hormone in females
mare gestation
Parturition
16. 1-2 days
cow ovulation
cervix
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
ewe estrus
17. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
mare gestation
mare estrus cycle
Parturition
seasonally polyestrous
18. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
cow estrus
penis proper
Avg. bull specs
hypothalamus and pituitary gland
19. Sperm production
sow gestation
spermatogenesis
4 major reasons for culling dairy cows
Follical Stimulating in males
20. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
prostate gland
burdizzo
leydid or interstitial cells
21. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
Grading choice
urethra
estrous
elastrator
22. Prevent the cow from getting an infection from the calve
Lutinizing Hormone in females
cow estrus cycle
feeding a high producing dairy cow
Dairy calves are removed from cow at birth to...
23. Superior genes are _______ to multiply
age and castration
penis and prepuce observation (BSE)
Hard
dartos muscle
24. Male on one pin and female on other side
cervix
visual evaluation (BSE)
libido test (BSE)
Hormones from both the fetus and the mom.
25. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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26. (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
mastitis
Blood
estrous
epididymis: definition - 3 parts - 4 functions
27. 2 month growth cycle. stored in the epididymis of the bull
normal presentation of the fetus
Sperm growth rate
mare estrus cycle
Dairy Cattle Lactation (standard)
28. 10-37 (21) days
cow gestation
mare estrus
mare estrus cycle
Size of cow in relation to the amount of milk produced
29. Can survive ~7 days in cow. vast majority <48 hours
Sperm survival specs
elastrator
Size of cow in relation to the amount of milk produced
elastrator
30. Start of the reproductive tract for the female. located outside of the body
vulva
castration
normal presentation of the fetus
Sperm growth rate
31. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
Dairy calves are removed from cow at birth to...
organs used in spermatogenesis
vagina
Lutinizing Hormone in females
32. Failure to have one testis (gonad) to descend
monorchid
ewe estrus
epididymis: definition - 3 parts - 4 functions
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
33. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
monorchid
testis (gonads)
Follical Stimulating in males
Sperm growth rate
34. Superior genes are _______ to multiply
Hard
cow gestation
femininity of a heifer
accessory sex glands
35. Front feet and head first. (except for hogs and dogs)
hypothalamus and pituitary gland
seasonally polyestrous
what has to happen for males for copulation to occur
normal presentation of the fetus
36. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
castration
ewe gestation
cow estrus
reasons for castration
37. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
cow gestation
sertoli cells
oviducts
38. 114 days
eminal vesicles
things to check for in a breeding soundness exam (BSE)
sow gestation
6-8 weeks
39. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
penis and prepuce observation (BSE)
prostate gland
dartos muscle
sperm cell
40. What helps regulate spermatogenesis?
ewe's estrous cycle
effects of BST
urethra
testosterone
41. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
scrotal circumference (BSE)
feeding a high producing dairy cow
Avg. bull specs
behavioral signs of estrus
42. Front feet and head first. (except for hogs and dogs)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
scrotal circumference (BSE)
normal presentation of the fetus
mastitis
43. 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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44. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
ewe's estrous cycle
behavioral signs of estrus
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
mare estrus cycle
45. 19-23 (21) days
sow estrus
cow estrus cycle
ewe estrus cycle
epididymis: definition - 3 parts - 4 functions
46. (switzerland) 2nd in size and milk production - most muscle -
feeding a high producing dairy cow
retractor muscles
Brown Swiss Cow
Dairy Cattle milking schedule
47. Days which have increasing daylight hours
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48. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
Dairy Cattle milking schedule
hormones
#1 cost in production
dairy cattle pregnancy check
49. Animal which has been castrated after puberty
estrus
ewe gestation
cow ovulation
stag
50. What makes the milk flow through the mammary glands?
penis proper
colostrum
estrus
Blood
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